Mercurial > hg > openjdk > hsx16
changeset 952:0799687b7385
6887571: Increase default heap config sizes
Summary: Apply modification of existing server heap size ergo to all collectors except CMS.
Reviewed-by: jmasa, ysr, xlu
line wrap: on
line diff
--- a/src/cpu/sparc/vm/c1_globals_sparc.hpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/cpu/sparc/vm/c1_globals_sparc.hpp Thu Oct 29 11:45:09 2009 -0400 @@ -22,10 +22,9 @@ * */ -// // Sets the default values for platform dependent flags used by the client compiler. // (see c1_globals.hpp) -// + #ifndef TIERED define_pd_global(bool, BackgroundCompilation, true ); define_pd_global(bool, CICompileOSR, true ); @@ -48,27 +47,24 @@ define_pd_global(bool, UseTLAB, true ); define_pd_global(bool, ProfileInterpreter, false); define_pd_global(intx, FreqInlineSize, 325 ); -define_pd_global(intx, NewRatio, 8 ); // Design center runs on 1.3.1 define_pd_global(bool, ResizeTLAB, true ); define_pd_global(intx, ReservedCodeCacheSize, 32*M ); define_pd_global(intx, CodeCacheExpansionSize, 32*K ); define_pd_global(uintx,CodeCacheMinBlockLength, 1); -define_pd_global(uintx, PermSize, 12*M ); -define_pd_global(uintx, MaxPermSize, 64*M ); -define_pd_global(bool, NeverActAsServerClassMachine, true); +define_pd_global(uintx,PermSize, 12*M ); +define_pd_global(uintx,MaxPermSize, 64*M ); +define_pd_global(bool, NeverActAsServerClassMachine, true ); define_pd_global(intx, NewSizeThreadIncrease, 16*K ); -define_pd_global(uintx, DefaultMaxRAM, 1*G); +define_pd_global(uint64_t,MaxRAM, 1ULL*G); define_pd_global(intx, InitialCodeCacheSize, 160*K); -#endif // TIERED +#endif // !TIERED define_pd_global(bool, UseTypeProfile, false); define_pd_global(bool, RoundFPResults, false); - -define_pd_global(bool, LIRFillDelaySlots, true); +define_pd_global(bool, LIRFillDelaySlots, true ); define_pd_global(bool, OptimizeSinglePrecision, false); -define_pd_global(bool, CSEArrayLength, true); +define_pd_global(bool, CSEArrayLength, true ); define_pd_global(bool, TwoOperandLIRForm, false); - -define_pd_global(intx, SafepointPollOffset, 0); +define_pd_global(intx, SafepointPollOffset, 0 );
--- a/src/cpu/sparc/vm/c2_globals_sparc.hpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/cpu/sparc/vm/c2_globals_sparc.hpp Thu Oct 29 11:45:09 2009 -0400 @@ -59,7 +59,6 @@ define_pd_global(intx, FreqInlineSize, 175); define_pd_global(intx, INTPRESSURE, 48); // large register set define_pd_global(intx, InteriorEntryAlignment, 16); // = CodeEntryAlignment -define_pd_global(intx, NewRatio, 2); define_pd_global(intx, NewSizeThreadIncrease, ScaleForWordSize(4*K)); // The default setting 16/16 seems to work best. // (For _228_jack 16/16 is 2% better than 4/4, 16/4, 32/32, 32/16, or 16/32.) @@ -83,25 +82,25 @@ // sequence of instructions to load a 64 bit pointer. // // InitialCodeCacheSize derived from specjbb2000 run. -define_pd_global(intx, InitialCodeCacheSize, 2048*K); // Integral multiple of CodeCacheExpansionSize -define_pd_global(intx, ReservedCodeCacheSize, 48*M); -define_pd_global(intx, CodeCacheExpansionSize, 64*K); +define_pd_global(intx, InitialCodeCacheSize, 2048*K); // Integral multiple of CodeCacheExpansionSize +define_pd_global(intx, ReservedCodeCacheSize, 48*M); +define_pd_global(intx, CodeCacheExpansionSize, 64*K); // Ergonomics related flags -define_pd_global(uintx, DefaultMaxRAM, 32*G); +define_pd_global(uint64_t,MaxRAM, 128ULL*G); #else // InitialCodeCacheSize derived from specjbb2000 run. -define_pd_global(intx, InitialCodeCacheSize, 1536*K); // Integral multiple of CodeCacheExpansionSize -define_pd_global(intx, ReservedCodeCacheSize, 32*M); -define_pd_global(intx, CodeCacheExpansionSize, 32*K); +define_pd_global(intx, InitialCodeCacheSize, 1536*K); // Integral multiple of CodeCacheExpansionSize +define_pd_global(intx, ReservedCodeCacheSize, 32*M); +define_pd_global(intx, CodeCacheExpansionSize, 32*K); // Ergonomics related flags -define_pd_global(uintx, DefaultMaxRAM, 1*G); +define_pd_global(uint64_t,MaxRAM, 4ULL*G); #endif -define_pd_global(uintx,CodeCacheMinBlockLength, 4); +define_pd_global(uintx,CodeCacheMinBlockLength, 4); // Heap related flags -define_pd_global(uintx, PermSize, ScaleForWordSize(16*M)); -define_pd_global(uintx, MaxPermSize, ScaleForWordSize(64*M)); +define_pd_global(uintx,PermSize, ScaleForWordSize(16*M)); +define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M)); // Ergonomics related flags define_pd_global(bool, NeverActAsServerClassMachine, false);
--- a/src/cpu/sparc/vm/globals_sparc.hpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/cpu/sparc/vm/globals_sparc.hpp Thu Oct 29 11:45:09 2009 -0400 @@ -22,10 +22,8 @@ * */ -// // Sets the default values for platform dependent flags used by the runtime system. // (see globals.hpp) -// // For sparc we do not do call backs when a thread is in the interpreter, because the // interpreter dispatch needs at least two instructions - first to load the dispatch address @@ -41,26 +39,23 @@ define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast -define_pd_global(intx, CodeEntryAlignment, 32); -define_pd_global(uintx, TLABSize, 0); -define_pd_global(uintx, NewSize, ScaleForWordSize((2048 * K) + (2 * (64 * K)))); -define_pd_global(intx, SurvivorRatio, 8); -define_pd_global(intx, InlineFrequencyCount, 50); // we can use more inlining on the SPARC -define_pd_global(intx, InlineSmallCode, 1500); +define_pd_global(intx, CodeEntryAlignment, 32); +define_pd_global(intx, InlineFrequencyCount, 50); // we can use more inlining on the SPARC +define_pd_global(intx, InlineSmallCode, 1500); #ifdef _LP64 // Stack slots are 2X larger in LP64 than in the 32 bit VM. -define_pd_global(intx, ThreadStackSize, 1024); -define_pd_global(intx, VMThreadStackSize, 1024); +define_pd_global(intx, ThreadStackSize, 1024); +define_pd_global(intx, VMThreadStackSize, 1024); #else -define_pd_global(intx, ThreadStackSize, 512); -define_pd_global(intx, VMThreadStackSize, 512); +define_pd_global(intx, ThreadStackSize, 512); +define_pd_global(intx, VMThreadStackSize, 512); #endif define_pd_global(intx, StackYellowPages, 2); define_pd_global(intx, StackRedPages, 1); define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1)); -define_pd_global(intx, PreInflateSpin, 40); // Determined by running design center +define_pd_global(intx, PreInflateSpin, 40); // Determined by running design center define_pd_global(bool, RewriteBytecodes, true); define_pd_global(bool, RewriteFrequentPairs, true);
--- a/src/cpu/x86/vm/c1_globals_x86.hpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/cpu/x86/vm/c1_globals_x86.hpp Thu Oct 29 11:45:09 2009 -0400 @@ -22,10 +22,8 @@ * */ -// // Sets the default values for platform dependent flags used by the client compiler. // (see c1_globals.hpp) -// #ifndef TIERED define_pd_global(bool, BackgroundCompilation, true ); @@ -48,27 +46,24 @@ define_pd_global(intx, OnStackReplacePercentage, 933 ); define_pd_global(intx, FreqInlineSize, 325 ); -define_pd_global(intx, NewRatio, 12 ); define_pd_global(intx, NewSizeThreadIncrease, 4*K ); define_pd_global(intx, InitialCodeCacheSize, 160*K); define_pd_global(intx, ReservedCodeCacheSize, 32*M ); define_pd_global(bool, ProfileInterpreter, false); define_pd_global(intx, CodeCacheExpansionSize, 32*K ); define_pd_global(uintx,CodeCacheMinBlockLength, 1); -define_pd_global(uintx, PermSize, 12*M ); -define_pd_global(uintx, MaxPermSize, 64*M ); -define_pd_global(bool, NeverActAsServerClassMachine, true); -define_pd_global(uintx, DefaultMaxRAM, 1*G); +define_pd_global(uintx,PermSize, 12*M ); +define_pd_global(uintx,MaxPermSize, 64*M ); +define_pd_global(bool, NeverActAsServerClassMachine, true ); +define_pd_global(uint64_t,MaxRAM, 1ULL*G); define_pd_global(bool, CICompileOSR, true ); -#endif // TIERED +#endif // !TIERED define_pd_global(bool, UseTypeProfile, false); define_pd_global(bool, RoundFPResults, true ); - define_pd_global(bool, LIRFillDelaySlots, false); -define_pd_global(bool, OptimizeSinglePrecision, true); +define_pd_global(bool, OptimizeSinglePrecision, true ); define_pd_global(bool, CSEArrayLength, false); -define_pd_global(bool, TwoOperandLIRForm, true); +define_pd_global(bool, TwoOperandLIRForm, true ); - -define_pd_global(intx, SafepointPollOffset, 256); +define_pd_global(intx, SafepointPollOffset, 256 );
--- a/src/cpu/x86/vm/c2_globals_x86.hpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/cpu/x86/vm/c2_globals_x86.hpp Thu Oct 29 11:45:09 2009 -0400 @@ -22,7 +22,6 @@ * */ -// // Sets the default values for platform dependent flags used by the server compiler. // (see c2_globals.hpp). Alpha-sorted. @@ -46,8 +45,8 @@ define_pd_global(intx, CompileThreshold, 10000); #endif // TIERED define_pd_global(intx, Tier2CompileThreshold, 10000); -define_pd_global(intx, Tier3CompileThreshold, 20000 ); -define_pd_global(intx, Tier4CompileThreshold, 40000 ); +define_pd_global(intx, Tier3CompileThreshold, 20000); +define_pd_global(intx, Tier4CompileThreshold, 40000); define_pd_global(intx, BackEdgeThreshold, 100000); define_pd_global(intx, Tier2BackEdgeThreshold, 100000); @@ -61,7 +60,6 @@ #ifdef AMD64 define_pd_global(intx, INTPRESSURE, 13); define_pd_global(intx, InteriorEntryAlignment, 16); -define_pd_global(intx, NewRatio, 2); define_pd_global(intx, NewSizeThreadIncrease, ScaleForWordSize(4*K)); define_pd_global(intx, LoopUnrollLimit, 60); // InitialCodeCacheSize derived from specjbb2000 run. @@ -69,19 +67,18 @@ define_pd_global(intx, CodeCacheExpansionSize, 64*K); // Ergonomics related flags -define_pd_global(uintx, DefaultMaxRAM, 32*G); +define_pd_global(uint64_t,MaxRAM, 128ULL*G); #else define_pd_global(intx, INTPRESSURE, 6); define_pd_global(intx, InteriorEntryAlignment, 4); -define_pd_global(intx, NewRatio, 8); // Design center runs on 1.3.1 define_pd_global(intx, NewSizeThreadIncrease, 4*K); -define_pd_global(intx, LoopUnrollLimit, 50); // Design center runs on 1.3.1 +define_pd_global(intx, LoopUnrollLimit, 50); // Design center runs on 1.3.1 // InitialCodeCacheSize derived from specjbb2000 run. define_pd_global(intx, InitialCodeCacheSize, 2304*K); // Integral multiple of CodeCacheExpansionSize define_pd_global(intx, CodeCacheExpansionSize, 32*K); // Ergonomics related flags -define_pd_global(uintx, DefaultMaxRAM, 1*G); +define_pd_global(uint64_t,MaxRAM, 4ULL*G); #endif // AMD64 define_pd_global(intx, OptoLoopAlignment, 16); define_pd_global(intx, RegisterCostAreaRatio, 16000); @@ -97,8 +94,8 @@ define_pd_global(uintx,CodeCacheMinBlockLength, 4); // Heap related flags -define_pd_global(uintx, PermSize, ScaleForWordSize(16*M)); -define_pd_global(uintx, MaxPermSize, ScaleForWordSize(64*M)); +define_pd_global(uintx,PermSize, ScaleForWordSize(16*M)); +define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M)); // Ergonomics related flags define_pd_global(bool, NeverActAsServerClassMachine, false);
--- a/src/cpu/x86/vm/globals_x86.hpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/cpu/x86/vm/globals_x86.hpp Thu Oct 29 11:45:09 2009 -0400 @@ -22,17 +22,16 @@ * */ -// // Sets the default values for platform dependent flags used by the runtime system. // (see globals.hpp) -// -define_pd_global(bool, ConvertSleepToYield, true); -define_pd_global(bool, ShareVtableStubs, true); -define_pd_global(bool, CountInterpCalls, true); +define_pd_global(bool, ConvertSleepToYield, true); +define_pd_global(bool, ShareVtableStubs, true); +define_pd_global(bool, CountInterpCalls, true); +define_pd_global(bool, NeedsDeoptSuspend, false); // only register window machines need this -define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks -define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast +define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks +define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast // See 4827828 for this change. There is no globals_core_i486.hpp. I can't // assign a different value for C2 without touching a number of files. Use @@ -42,29 +41,24 @@ // the uep and the vep doesn't get real alignment but just slops on by // only assured that the entry instruction meets the 5 byte size requirement. #ifdef COMPILER2 -define_pd_global(intx, CodeEntryAlignment, 32); +define_pd_global(intx, CodeEntryAlignment, 32); #else -define_pd_global(intx, CodeEntryAlignment, 16); +define_pd_global(intx, CodeEntryAlignment, 16); #endif // COMPILER2 +define_pd_global(intx, InlineFrequencyCount, 100); +define_pd_global(intx, InlineSmallCode, 1000); -define_pd_global(bool, NeedsDeoptSuspend, false); // only register window machines need this - -define_pd_global(uintx, TLABSize, 0); +define_pd_global(intx, StackYellowPages, 2); +define_pd_global(intx, StackRedPages, 1); #ifdef AMD64 -define_pd_global(uintx, NewSize, ScaleForWordSize(2048 * K)); // Very large C++ stack frames using solaris-amd64 optimized builds // due to lack of optimization caused by C++ compiler bugs define_pd_global(intx, StackShadowPages, SOLARIS_ONLY(20) NOT_SOLARIS(6) DEBUG_ONLY(+2)); #else -define_pd_global(uintx, NewSize, 1024 * K); define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1)); #endif // AMD64 -define_pd_global(intx, InlineFrequencyCount, 100); -define_pd_global(intx, InlineSmallCode, 1000); -define_pd_global(intx, PreInflateSpin, 10); -define_pd_global(intx, StackYellowPages, 2); -define_pd_global(intx, StackRedPages, 1); +define_pd_global(intx, PreInflateSpin, 10); define_pd_global(bool, RewriteBytecodes, true); define_pd_global(bool, RewriteFrequentPairs, true);
--- a/src/os_cpu/linux_x86/vm/globals_linux_x86.hpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/os_cpu/linux_x86/vm/globals_linux_x86.hpp Thu Oct 29 11:45:09 2009 -0400 @@ -22,10 +22,9 @@ * */ -// // Sets the default values for platform dependent flags used by the runtime system. // (see globals.hpp) -// + define_pd_global(bool, DontYieldALot, false); #ifdef AMD64 define_pd_global(intx, ThreadStackSize, 1024); // 0 => use system default @@ -39,11 +38,10 @@ #endif // AMD64 define_pd_global(intx, CompilerThreadStackSize, 0); -define_pd_global(intx, SurvivorRatio, 8); -define_pd_global(uintx, JVMInvokeMethodSlack, 8192); +define_pd_global(uintx,JVMInvokeMethodSlack, 8192); // Only used on 64 bit platforms -define_pd_global(uintx, HeapBaseMinAddress, 2*G); +define_pd_global(uintx,HeapBaseMinAddress, 2*G); // Only used on 64 bit Windows platforms define_pd_global(bool, UseVectoredExceptions, false);
--- a/src/os_cpu/solaris_x86/vm/globals_solaris_x86.hpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/os_cpu/solaris_x86/vm/globals_solaris_x86.hpp Thu Oct 29 11:45:09 2009 -0400 @@ -22,31 +22,25 @@ * */ -// // Sets the default values for platform dependent flags used by the runtime system. // (see globals.hpp) -// + define_pd_global(bool, DontYieldALot, true); // Determined in the design center #ifdef AMD64 define_pd_global(intx, ThreadStackSize, 1024); // 0 => use system default define_pd_global(intx, VMThreadStackSize, 1024); -define_pd_global(intx, SurvivorRatio, 6); -define_pd_global(uintx, JVMInvokeMethodSlack, 8*K); +define_pd_global(uintx,JVMInvokeMethodSlack, 8*K); #else -// UseStackBanging is not pd -// define_pd_global(bool, UseStackBanging, true); - // ThreadStackSize 320 allows TaggedStackInterpreter and a couple of test cases // to run while keeping the number of threads that can be created high. define_pd_global(intx, ThreadStackSize, 320); define_pd_global(intx, VMThreadStackSize, 512); -define_pd_global(intx, SurvivorRatio, 8); -define_pd_global(uintx, JVMInvokeMethodSlack, 10*K); +define_pd_global(uintx,JVMInvokeMethodSlack, 10*K); #endif // AMD64 define_pd_global(intx, CompilerThreadStackSize, 0); // Only used on 64 bit platforms -define_pd_global(uintx, HeapBaseMinAddress, 256*M); +define_pd_global(uintx,HeapBaseMinAddress, 256*M); // Only used on 64 bit Windows platforms define_pd_global(bool, UseVectoredExceptions, false);
--- a/src/os_cpu/windows_x86/vm/globals_windows_x86.hpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/os_cpu/windows_x86/vm/globals_windows_x86.hpp Thu Oct 29 11:45:09 2009 -0400 @@ -22,10 +22,9 @@ * */ -// // Sets the default values for platform dependent flags used by the runtime system. // (see globals.hpp) -// + define_pd_global(bool, DontYieldALot, false); // Default stack size on Windows is determined by the executable (java.exe @@ -35,8 +34,6 @@ define_pd_global(intx, ThreadStackSize, 0); // 0 => use system default define_pd_global(intx, VMThreadStackSize, 0); // 0 => use system default -define_pd_global(intx, SurvivorRatio, 8); - #ifdef ASSERT define_pd_global(intx, CompilerThreadStackSize, 1024); #else
--- a/src/share/vm/gc_implementation/parallelScavenge/psGCAdaptivePolicyCounters.cpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/share/vm/gc_implementation/parallelScavenge/psGCAdaptivePolicyCounters.cpp Thu Oct 29 11:45:09 2009 -0400 @@ -51,7 +51,7 @@ cname = PerfDataManager::counter_name(name_space(), "oldCapacity"); _old_capacity = PerfDataManager::create_variable(SUN_GC, cname, - PerfData::U_Bytes, (jlong) Arguments::initial_heap_size(), CHECK); + PerfData::U_Bytes, (jlong) InitialHeapSize, CHECK); cname = PerfDataManager::counter_name(name_space(), "boundaryMoved"); _boundary_moved = PerfDataManager::create_variable(SUN_GC, cname,
--- a/src/share/vm/memory/collectorPolicy.cpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/share/vm/memory/collectorPolicy.cpp Thu Oct 29 11:45:09 2009 -0400 @@ -55,7 +55,7 @@ void CollectorPolicy::initialize_size_info() { // User inputs from -mx and ms are aligned - set_initial_heap_byte_size(Arguments::initial_heap_size()); + set_initial_heap_byte_size(InitialHeapSize); if (initial_heap_byte_size() == 0) { set_initial_heap_byte_size(NewSize + OldSize); }
--- a/src/share/vm/runtime/arguments.cpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/share/vm/runtime/arguments.cpp Thu Oct 29 11:45:09 2009 -0400 @@ -37,7 +37,6 @@ const char* Arguments::_gc_log_filename = NULL; bool Arguments::_has_profile = false; bool Arguments::_has_alloc_profile = false; -uintx Arguments::_initial_heap_size = 0; uintx Arguments::_min_heap_size = 0; Arguments::Mode Arguments::_mode = _mixed; bool Arguments::_java_compiler = false; @@ -182,6 +181,9 @@ { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, + { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, + { "DefaultInitialRAMFraction", + JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, { NULL, JDK_Version(0), JDK_Version(0) } }; @@ -555,6 +557,10 @@ if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { return true; } + uint64_t uint64_t_v = (uint64_t) v; + if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { + return true; + } return false; } @@ -947,7 +953,7 @@ // UseParNewGC and not explicitly set ParallelGCThreads we // set it, unless this is a single cpu machine. void Arguments::set_parnew_gc_flags() { - assert(!UseSerialGC && !UseParallelGC && !UseG1GC, + assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, "control point invariant"); assert(UseParNewGC, "Error"); @@ -960,13 +966,14 @@ if (ParallelGCThreads == 0) { FLAG_SET_DEFAULT(ParallelGCThreads, Abstract_VM_Version::parallel_worker_threads()); - if (FLAG_IS_DEFAULT(ParallelGCThreads) && ParallelGCThreads == 1) { + if (ParallelGCThreads == 1) { FLAG_SET_DEFAULT(UseParNewGC, false); + FLAG_SET_DEFAULT(ParallelGCThreads, 0); } } - if (!UseParNewGC) { - FLAG_SET_DEFAULT(ParallelGCThreads, 0); - } else { + + if (UseParNewGC) { + // CDS doesn't work with ParNew yet no_shared_spaces(); // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, @@ -980,7 +987,7 @@ FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); } - // AlwaysTenure flag should make ParNew to promote all at first collection. + // AlwaysTenure flag should make ParNew promote all at first collection. // See CR 6362902. if (AlwaysTenure) { FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); @@ -1003,7 +1010,7 @@ // further optimization and tuning efforts, and would almost // certainly gain from analysis of platform and environment. void Arguments::set_cms_and_parnew_gc_flags() { - assert(!UseSerialGC && !UseParallelGC, "Error"); + assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); assert(UseConcMarkSweepGC, "CMS is expected to be on here"); // If we are using CMS, we prefer to UseParNewGC, @@ -1068,7 +1075,7 @@ } else { FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); } - if(PrintGCDetails && Verbose) { + if (PrintGCDetails && Verbose) { // Too early to use gclog_or_tty tty->print_cr("Ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); } @@ -1097,15 +1104,15 @@ } else { min_new = NewSize; } - size_t prev_initial_size = initial_heap_size(); - if (prev_initial_size != 0 && prev_initial_size < min_new+OldSize) { - set_initial_heap_size(min_new+OldSize); + size_t prev_initial_size = InitialHeapSize; + if (prev_initial_size != 0 && prev_initial_size < min_new + OldSize) { + FLAG_SET_ERGO(uintx, InitialHeapSize, min_new + OldSize); // Currently minimum size and the initial heap sizes are the same. - set_min_heap_size(initial_heap_size()); + set_min_heap_size(InitialHeapSize); if (PrintGCDetails && Verbose) { warning("Initial heap size increased to " SIZE_FORMAT " M from " SIZE_FORMAT " M; use -XX:NewSize=... for finer control.", - initial_heap_size()/M, prev_initial_size/M); + InitialHeapSize/M, prev_initial_size/M); } } @@ -1114,12 +1121,12 @@ align_size_down(MaxHeapSize, CardTableRS::ct_max_alignment_constraint()); - if(PrintGCDetails && Verbose) { + if (PrintGCDetails && Verbose) { // Too early to use gclog_or_tty tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT " initial_heap_size: " SIZE_FORMAT " max_heap: " SIZE_FORMAT, - min_heap_size(), initial_heap_size(), max_heap); + min_heap_size(), InitialHeapSize, max_heap); } if (max_heap > min_new) { // Unless explicitly requested otherwise, make young gen @@ -1127,7 +1134,7 @@ if (FLAG_IS_DEFAULT(NewSize)) { FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); - if(PrintGCDetails && Verbose) { + if (PrintGCDetails && Verbose) { // Too early to use gclog_or_tty tty->print_cr("Ergo set NewSize: " SIZE_FORMAT, NewSize); } @@ -1137,8 +1144,8 @@ // later NewRatio will decide how it grows; see above. if (FLAG_IS_DEFAULT(OldSize)) { if (max_heap > NewSize) { - FLAG_SET_ERGO(uintx, OldSize, MIN2(3*NewSize, max_heap - NewSize)); - if(PrintGCDetails && Verbose) { + FLAG_SET_ERGO(uintx, OldSize, MIN2(3*NewSize, max_heap - NewSize)); + if (PrintGCDetails && Verbose) { // Too early to use gclog_or_tty tty->print_cr("Ergo set OldSize: " SIZE_FORMAT, OldSize); } @@ -1186,7 +1193,7 @@ inline uintx max_heap_for_compressed_oops() { LP64_ONLY(return oopDesc::OopEncodingHeapMax - MaxPermSize - os::vm_page_size()); - NOT_LP64(return DefaultMaxRAM); + NOT_LP64(ShouldNotReachHere(); return 0); } bool Arguments::should_auto_select_low_pause_collector() { @@ -1205,7 +1212,7 @@ void Arguments::set_ergonomics_flags() { // Parallel GC is not compatible with sharing. If one specifies - // that they want sharing explicitly, do not set ergonmics flags. + // that they want sharing explicitly, do not set ergonomics flags. if (DumpSharedSpaces || ForceSharedSpaces) { return; } @@ -1271,8 +1278,6 @@ FLAG_SET_ERGO(uintx, ParallelGCThreads, Abstract_VM_Version::parallel_worker_threads()); - // PS is a server collector, setup the heap sizes accordingly. - set_server_heap_size(); // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the // SurvivorRatio has been set, reset their default values to SurvivorRatio + // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. @@ -1302,8 +1307,6 @@ void Arguments::set_g1_gc_flags() { assert(UseG1GC, "Error"); - // G1 is a server collector, setup the heap sizes accordingly. - set_server_heap_size(); #ifdef COMPILER1 FastTLABRefill = false; #endif @@ -1321,50 +1324,77 @@ } } -void Arguments::set_server_heap_size() { +void Arguments::set_heap_size() { + if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { + // Deprecated flag + FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); + } + + const julong phys_mem = + FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) + : (julong)MaxRAM; + + // If the maximum heap size has not been set with -Xmx, + // then set it as fraction of the size of physical memory, + // respecting the maximum and minimum sizes of the heap. if (FLAG_IS_DEFAULT(MaxHeapSize)) { - const uint64_t reasonable_fraction = - os::physical_memory() / DefaultMaxRAMFraction; - const uint64_t maximum_size = (uint64_t) - (FLAG_IS_DEFAULT(DefaultMaxRAM) && UseCompressedOops ? - MIN2(max_heap_for_compressed_oops(), DefaultMaxRAM) : - DefaultMaxRAM); - size_t reasonable_max = - (size_t) os::allocatable_physical_memory(reasonable_fraction); - if (reasonable_max > maximum_size) { - reasonable_max = maximum_size; + julong reasonable_max = phys_mem / MaxRAMFraction; + + if (phys_mem <= MaxHeapSize * MinRAMFraction) { + // Small physical memory, so use a minimum fraction of it for the heap + reasonable_max = phys_mem / MinRAMFraction; + } else { + // Not-small physical memory, so require a heap at least + // as large as MaxHeapSize + reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); + } + if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { + // Limit the heap size to ErgoHeapSizeLimit + reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); } + if (UseCompressedOops) { + // Limit the heap size to the maximum possible when using compressed oops + reasonable_max = MIN2(reasonable_max, (julong)max_heap_for_compressed_oops()); + } + reasonable_max = os::allocatable_physical_memory(reasonable_max); + + if (!FLAG_IS_DEFAULT(InitialHeapSize)) { + // An initial heap size was specified on the command line, + // so be sure that the maximum size is consistent. Done + // after call to allocatable_physical_memory because that + // method might reduce the allocation size. + reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); + } + if (PrintGCDetails && Verbose) { // Cannot use gclog_or_tty yet. - tty->print_cr(" Max heap size for server class platform " - SIZE_FORMAT, reasonable_max); + tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); } - // If the initial_heap_size has not been set with -Xms, - // then set it as fraction of size of physical memory - // respecting the maximum and minimum sizes of the heap. - if (initial_heap_size() == 0) { - const uint64_t reasonable_initial_fraction = - os::physical_memory() / DefaultInitialRAMFraction; - const size_t reasonable_initial = - (size_t) os::allocatable_physical_memory(reasonable_initial_fraction); - const size_t minimum_size = NewSize + OldSize; - set_initial_heap_size(MAX2(MIN2(reasonable_initial, reasonable_max), - minimum_size)); - // Currently the minimum size and the initial heap sizes are the same. - set_min_heap_size(initial_heap_size()); - if (PrintGCDetails && Verbose) { - // Cannot use gclog_or_tty yet. - tty->print_cr(" Initial heap size for server class platform " - SIZE_FORMAT, initial_heap_size()); - } - } else { - // A minimum size was specified on the command line. Be sure - // that the maximum size is consistent. - if (initial_heap_size() > reasonable_max) { - reasonable_max = initial_heap_size(); - } + FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); + } + + // If the initial_heap_size has not been set with InitialHeapSize, + // or -Xms, then set it as fraction of the size of physical memory, + // respecting the maximum and minimum sizes of the heap. + if (FLAG_IS_DEFAULT(InitialHeapSize)) { + julong reasonable_initial = phys_mem / InitialRAMFraction; + + reasonable_initial = MAX2(reasonable_initial, (julong)(OldSize + NewSize)); + reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); + + reasonable_initial = os::allocatable_physical_memory(reasonable_initial); + + if (PrintGCDetails && Verbose) { + // Cannot use gclog_or_tty yet. + tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); } - FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx) reasonable_max); + FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); + + // Subsequent ergonomics code may expect min_heap_size to be set + // if InitialHeapSize is. Use whatever the current values are + // for OldSize and NewSize, whether or not they were set on the + // command line. + set_min_heap_size(OldSize + NewSize); } } @@ -1448,7 +1478,7 @@ return false; } -static void set_serial_gc_flags() { +static void force_serial_gc() { FLAG_SET_DEFAULT(UseSerialGC, true); FLAG_SET_DEFAULT(UseParNewGC, false); FLAG_SET_DEFAULT(UseConcMarkSweepGC, false); @@ -1582,7 +1612,7 @@ // Either force sharing on by forcing the other options off, or // force sharing off. if (DumpSharedSpaces || ForceSharedSpaces) { - set_serial_gc_flags(); + force_serial_gc(); FLAG_SET_DEFAULT(SOLARIS_ONLY(UseISM) NOT_SOLARIS(UseLargePages), false); } else { no_shared_spaces(); @@ -1916,8 +1946,8 @@ describe_range_error(errcode); return JNI_EINVAL; } - FLAG_SET_CMDLINE(uintx, MaxNewSize, (size_t) long_initial_eden_size); - FLAG_SET_CMDLINE(uintx, NewSize, (size_t) long_initial_eden_size); + FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); + FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); // -Xms } else if (match_option(option, "-Xms", &tail)) { julong long_initial_heap_size = 0; @@ -1928,9 +1958,9 @@ describe_range_error(errcode); return JNI_EINVAL; } - set_initial_heap_size((size_t) long_initial_heap_size); + FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); // Currently the minimum size and the initial heap sizes are the same. - set_min_heap_size(initial_heap_size()); + set_min_heap_size(InitialHeapSize); // -Xmx } else if (match_option(option, "-Xmx", &tail)) { julong long_max_heap_size = 0; @@ -1941,7 +1971,7 @@ describe_range_error(errcode); return JNI_EINVAL; } - FLAG_SET_CMDLINE(uintx, MaxHeapSize, (size_t) long_max_heap_size); + FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); // Xmaxf } else if (match_option(option, "-Xmaxf", &tail)) { int maxf = (int)(atof(tail) * 100); @@ -2187,9 +2217,9 @@ if (FLAG_IS_DEFAULT(MaxHeapSize)) { FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); - set_initial_heap_size(MaxHeapSize); + FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); // Currently the minimum size and the initial heap sizes are the same. - set_min_heap_size(initial_heap_size()); + set_min_heap_size(initHeapSize); } if (FLAG_IS_DEFAULT(NewSize)) { // Make the young generation 3/8ths of the total heap. @@ -2661,7 +2691,7 @@ } #ifdef SERIALGC - set_serial_gc_flags(); + force_serial_gc(); #endif // SERIALGC #ifdef KERNEL no_shared_spaces(); @@ -2675,18 +2705,22 @@ return JNI_EINVAL; } - if (UseParallelGC || UseParallelOldGC) { - // Set some flags for ParallelGC if needed. - set_parallel_gc_flags(); - } else if (UseConcMarkSweepGC) { - // Set some flags for CMS + if (UseConcMarkSweepGC) { + // Set flags for CMS and ParNew. Check UseConcMarkSweep first + // to ensure that when both UseConcMarkSweepGC and UseParNewGC + // are true, we don't call set_parnew_gc_flags() as well. set_cms_and_parnew_gc_flags(); - } else if (UseParNewGC) { - // Set some flags for ParNew - set_parnew_gc_flags(); - } else if (UseG1GC) { - // Set some flags for garbage-first, if needed. - set_g1_gc_flags(); + } else { + // Set heap size based on available physical memory + set_heap_size(); + // Set per-collector flags + if (UseParallelGC || UseParallelOldGC) { + set_parallel_gc_flags(); + } else if (UseParNewGC) { + set_parnew_gc_flags(); + } else if (UseG1GC) { + set_g1_gc_flags(); + } } #ifdef SERIALGC
--- a/src/share/vm/runtime/arguments.hpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/share/vm/runtime/arguments.hpp Thu Oct 29 11:45:09 2009 -0400 @@ -254,7 +254,6 @@ static bool _has_profile; static bool _has_alloc_profile; static const char* _gc_log_filename; - static uintx _initial_heap_size; static uintx _min_heap_size; // -Xrun arguments @@ -300,8 +299,8 @@ static void set_g1_gc_flags(); // GC ergonomics static void set_ergonomics_flags(); - // Setup heap size for a server platform - static void set_server_heap_size(); + // Setup heap size + static void set_heap_size(); // Based on automatic selection criteria, should the // low pause collector be used. static bool should_auto_select_low_pause_collector(); @@ -434,9 +433,7 @@ static bool has_profile() { return _has_profile; } static bool has_alloc_profile() { return _has_alloc_profile; } - // -Xms , -Xmx - static uintx initial_heap_size() { return _initial_heap_size; } - static void set_initial_heap_size(uintx v) { _initial_heap_size = v; } + // -Xms, -Xmx static uintx min_heap_size() { return _min_heap_size; } static void set_min_heap_size(uintx v) { _min_heap_size = v; }
--- a/src/share/vm/runtime/globals.cpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/share/vm/runtime/globals.cpp Thu Oct 29 11:45:09 2009 -0400 @@ -324,6 +324,32 @@ faddr->origin = origin; } +bool CommandLineFlags::uint64_tAt(char* name, size_t len, uint64_t* value) { + Flag* result = Flag::find_flag(name, len); + if (result == NULL) return false; + if (!result->is_uint64_t()) return false; + *value = result->get_uint64_t(); + return true; +} + +bool CommandLineFlags::uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin) { + Flag* result = Flag::find_flag(name, len); + if (result == NULL) return false; + if (!result->is_uint64_t()) return false; + uint64_t old_value = result->get_uint64_t(); + result->set_uint64_t(*value); + *value = old_value; + result->origin = origin; + return true; +} + +void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, FlagValueOrigin origin) { + Flag* faddr = address_of_flag(flag); + guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type"); + faddr->set_uint64_t(value); + faddr->origin = origin; +} + bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) { Flag* result = Flag::find_flag(name, len); if (result == NULL) return false;
--- a/src/share/vm/runtime/globals.hpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/share/vm/runtime/globals.hpp Thu Oct 29 11:45:09 2009 -0400 @@ -49,7 +49,6 @@ define_pd_global(intx, FreqInlineSize, 0); define_pd_global(intx, InlineSmallCode, 0); define_pd_global(intx, NewSizeThreadIncrease, 4*K); -define_pd_global(intx, NewRatio, 4); define_pd_global(intx, InlineClassNatives, true); define_pd_global(intx, InlineUnsafeOps, true); define_pd_global(intx, InitialCodeCacheSize, 160*K); @@ -59,7 +58,7 @@ define_pd_global(uintx,PermSize, ScaleForWordSize(4*M)); define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M)); define_pd_global(bool, NeverActAsServerClassMachine, true); -define_pd_global(uintx, DefaultMaxRAM, 1*G); +define_pd_global(uint64_t,MaxRAM, 1ULL*G); #define CI_COMPILER_COUNT 0 #else @@ -114,6 +113,10 @@ uintx get_uintx() const { return *((uintx*) addr); } void set_uintx(uintx value) { *((uintx*) addr) = value; } + bool is_uint64_t() const { return strcmp(type, "uint64_t") == 0; } + uint64_t get_uint64_t() const { return *((uint64_t*) addr); } + void set_uint64_t(uint64_t value) { *((uint64_t*) addr) = value; } + bool is_double() const { return strcmp(type, "double") == 0; } double get_double() const { return *((double*) addr); } void set_double(double value) { *((double*) addr) = value; } @@ -189,6 +192,11 @@ static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } + static bool uint64_tAt(char* name, size_t len, uint64_t* value); + static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); } + static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin); + static bool uint64_tAtPut(char* name, uint64_t* value, FlagValueOrigin origin) { return uint64_tAtPut(name, strlen(name), value, origin); } + static bool doubleAt(char* name, size_t len, double* value); static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); @@ -781,7 +789,7 @@ product(bool, ProfilerRecordPC, false, \ "Collects tick for each 16 byte interval of compiled code") \ \ - product(bool, ProfileVM, false, \ + product(bool, ProfileVM, false, \ "Profiles ticks that fall within VM (either in the VM Thread " \ "or VM code called through stubs)") \ \ @@ -811,7 +819,7 @@ \ product(bool, RegisterFinalizersAtInit, true, \ "Register finalizable objects at end of Object.<init> or " \ - "after allocation.") \ + "after allocation") \ \ develop(bool, RegisterReferences, true, \ "Tells whether the VM should register soft/weak/final/phantom " \ @@ -858,14 +866,14 @@ product(bool, AlwaysLockClassLoader, false, \ "Require the VM to acquire the class loader lock before calling " \ "loadClass() even for class loaders registering " \ - "as parallel capable. Default false. ") \ + "as parallel capable") \ \ product(bool, AllowParallelDefineClass, false, \ "Allow parallel defineClass requests for class loaders " \ - "registering as parallel capable. Default false") \ + "registering as parallel capable") \ \ product(bool, MustCallLoadClassInternal, false, \ - "Call loadClassInternal() rather than loadClass().Default false") \ + "Call loadClassInternal() rather than loadClass()") \ \ product_pd(bool, DontYieldALot, \ "Throw away obvious excess yield calls (for SOLARIS only)") \ @@ -917,9 +925,9 @@ "(Unstable, Linux-specific)" \ " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ \ - product(bool, FilterSpuriousWakeups , true, \ - "Prevent spurious or premature wakeups from object.wait" \ - "(Solaris only)") \ + product(bool, FilterSpuriousWakeups, true, \ + "Prevent spurious or premature wakeups from object.wait " \ + "(Solaris only)") \ \ product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ @@ -969,7 +977,7 @@ \ product(bool, UseAltSigs, false, \ "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ - "internal signals. (Solaris only)") \ + "internal signals (Solaris only)") \ \ product(bool, UseSpinning, false, \ "Use spinning in monitor inflation and before entry") \ @@ -1261,12 +1269,12 @@ "Always tenure objects in eden. (ParallelGC only)") \ \ product(bool, NeverTenure, false, \ - "Never tenure objects in eden, May tenure on overflow" \ - " (ParallelGC only)") \ + "Never tenure objects in eden, May tenure on overflow " \ + "(ParallelGC only)") \ \ product(bool, ScavengeBeforeFullGC, true, \ - "Scavenge youngest generation before each full GC," \ - " used with UseParallelGC") \ + "Scavenge youngest generation before each full GC, " \ + "used with UseParallelGC") \ \ develop(bool, ScavengeWithObjectsInToSpace, false, \ "Allow scavenges to occur when to_space contains objects.") \ @@ -1279,9 +1287,9 @@ " (effective only when UseConcMarkSweepGC)") \ \ product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ - "A System.gc() request invokes a concurrent collection and" \ - " also unloads classes during such a concurrent gc cycle " \ - " (effective only when UseConcMarkSweepGC)") \ + "A System.gc() request invokes a concurrent collection and " \ + "also unloads classes during such a concurrent gc cycle " \ + "(effective only when UseConcMarkSweepGC)") \ \ develop(bool, UseCMSAdaptiveFreeLists, true, \ "Use Adaptive Free Lists in the CMS generation") \ @@ -1336,8 +1344,8 @@ "Whether we should simulate work queue overflow in ParNew") \ \ notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ - "An `interval' counter that determines how frequently" \ - " we simulate overflow; a smaller number increases frequency") \ + "An `interval' counter that determines how frequently " \ + "we simulate overflow; a smaller number increases frequency") \ \ product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ "The desired number of objects to claim from the overflow list") \ @@ -1350,12 +1358,12 @@ "It forces all freshly committed pages to be pre-touched.") \ \ product(bool, CMSUseOldDefaults, false, \ - "A flag temporarily introduced to allow reverting to some older" \ - "default settings; older as of 6.0 ") \ + "A flag temporarily introduced to allow reverting to some " \ + "older default settings; older as of 6.0") \ \ product(intx, CMSYoungGenPerWorker, 16*M, \ "The amount of young gen chosen by default per GC worker " \ - "thread available ") \ + "thread available") \ \ product(bool, GCOverheadReporting, false, \ "Enables the GC overhead reporting facility") \ @@ -1376,43 +1384,44 @@ "automatically adjusted") \ \ product(uintx, CMSIncrementalDutyCycleMin, 0, \ - "Lower bound on the duty cycle when CMSIncrementalPacing is" \ - "enabled (a percentage, 0-100).") \ + "Lower bound on the duty cycle when CMSIncrementalPacing is " \ + "enabled (a percentage, 0-100)") \ \ product(uintx, CMSIncrementalSafetyFactor, 10, \ - "Percentage (0-100) used to add conservatism when computing the" \ - "duty cycle.") \ + "Percentage (0-100) used to add conservatism when computing the " \ + "duty cycle") \ \ product(uintx, CMSIncrementalOffset, 0, \ "Percentage (0-100) by which the CMS incremental mode duty cycle" \ - "is shifted to the right within the period between young GCs") \ + " is shifted to the right within the period between young GCs") \ \ product(uintx, CMSExpAvgFactor, 25, \ - "Percentage (0-100) used to weight the current sample when" \ - "computing exponential averages for CMS statistics.") \ + "Percentage (0-100) used to weight the current sample when " \ + "computing exponential averages for CMS statistics") \ \ product(uintx, CMS_FLSWeight, 50, \ - "Percentage (0-100) used to weight the current sample when" \ - "computing exponentially decating averages for CMS FLS statistics.") \ + "Percentage (0-100) used to weight the current sample when " \ + "computing exponentially decating averages for CMS FLS statistics") \ \ product(uintx, CMS_FLSPadding, 2, \ - "The multiple of deviation from mean to use for buffering" \ + "The multiple of deviation from mean to use for buffering " \ "against volatility in free list demand.") \ \ product(uintx, FLSCoalescePolicy, 2, \ "CMS: Aggression level for coalescing, increasing from 0 to 4") \ \ product(uintx, CMS_SweepWeight, 50, \ - "Percentage (0-100) used to weight the current sample when" \ - "computing exponentially decaying average for inter-sweep duration.") \ + "Percentage (0-100) used to weight the current sample when " \ + "computing exponentially decaying average for inter-sweep " \ + "duration") \ \ product(uintx, CMS_SweepPadding, 2, \ - "The multiple of deviation from mean to use for buffering" \ + "The multiple of deviation from mean to use for buffering " \ "against volatility in inter-sweep duration.") \ \ product(uintx, CMS_SweepTimerThresholdMillis, 10, \ "Skip block flux-rate sampling for an epoch unless inter-sweep " \ - " duration exceeds this threhold in milliseconds") \ + "duration exceeds this threhold in milliseconds") \ \ develop(bool, CMSTraceIncrementalMode, false, \ "Trace CMS incremental mode") \ @@ -1613,35 +1622,36 @@ \ product(intx, CMSTriggerRatio, 80, \ "Percentage of MinHeapFreeRatio in CMS generation that is " \ - " allocated before a CMS collection cycle commences") \ + "allocated before a CMS collection cycle commences") \ \ product(intx, CMSTriggerPermRatio, 80, \ - "Percentage of MinHeapFreeRatio in the CMS perm generation that" \ - " is allocated before a CMS collection cycle commences, that " \ - " also collects the perm generation") \ + "Percentage of MinHeapFreeRatio in the CMS perm generation that " \ + "is allocated before a CMS collection cycle commences, that " \ + "also collects the perm generation") \ \ product(uintx, CMSBootstrapOccupancy, 50, \ "Percentage CMS generation occupancy at which to " \ - " initiate CMS collection for bootstrapping collection stats") \ + "initiate CMS collection for bootstrapping collection stats") \ \ product(intx, CMSInitiatingOccupancyFraction, -1, \ "Percentage CMS generation occupancy to start a CMS collection " \ - " cycle (A negative value means that CMSTriggerRatio is used)") \ + "cycle. A negative value means that CMSTriggerRatio is used") \ \ product(intx, CMSInitiatingPermOccupancyFraction, -1, \ - "Percentage CMS perm generation occupancy to start a CMScollection"\ - " cycle (A negative value means that CMSTriggerPermRatio is used)")\ + "Percentage CMS perm generation occupancy to start a " \ + "CMScollection cycle. A negative value means that " \ + "CMSTriggerPermRatio is used") \ \ product(bool, UseCMSInitiatingOccupancyOnly, false, \ "Only use occupancy as a crierion for starting a CMS collection") \ \ product(intx, CMSIsTooFullPercentage, 98, \ - "An absolute ceiling above which CMS will always consider the" \ - " perm gen ripe for collection") \ + "An absolute ceiling above which CMS will always consider the " \ + "perm gen ripe for collection") \ \ develop(bool, CMSTestInFreeList, false, \ "Check if the coalesced range is already in the " \ - "free lists as claimed.") \ + "free lists as claimed") \ \ notproduct(bool, CMSVerifyReturnedBytes, false, \ "Check that all the garbage collected was returned to the " \ @@ -1659,8 +1669,8 @@ "Enforce ScavengeALot/GCALot at all potential safepoints") \ \ product(bool, HandlePromotionFailure, true, \ - "The youngest generation collection does not require" \ - " a guarantee of full promotion of all live objects.") \ + "The youngest generation collection does not require " \ + "a guarantee of full promotion of all live objects.") \ \ notproduct(bool, PromotionFailureALot, false, \ "Use promotion failure handling on every youngest generation " \ @@ -1688,7 +1698,7 @@ "Ratio of hard spins to calls to yield") \ \ product(uintx, PreserveMarkStackSize, 1024, \ - "Size for stack used in promotion failure handling") \ + "Size for stack used in promotion failure handling") \ \ product_pd(bool, UseTLAB, "Use thread-local object allocation") \ \ @@ -1713,14 +1723,27 @@ product(bool, AlwaysActAsServerClassMachine, false, \ "Always act like a server-class machine") \ \ - product_pd(uintx, DefaultMaxRAM, \ - "Maximum real memory size for setting server class heap size") \ + product_pd(uint64_t, MaxRAM, \ + "Real memory size (in bytes) used to set maximum heap size") \ + \ + product(uintx, ErgoHeapSizeLimit, 0, \ + "Maximum ergonomically set heap size (in bytes); zero means use " \ + "MaxRAM / MaxRAMFraction") \ + \ + product(uintx, MaxRAMFraction, 4, \ + "Maximum fraction (1/n) of real memory used for maximum heap " \ + "size") \ \ product(uintx, DefaultMaxRAMFraction, 4, \ - "Fraction (1/n) of real memory used for server class max heap") \ - \ - product(uintx, DefaultInitialRAMFraction, 64, \ - "Fraction (1/n) of real memory used for server class initial heap") \ + "Maximum fraction (1/n) of real memory used for maximum heap " \ + "size; deprecated: to be renamed to MaxRAMFraction") \ + \ + product(uintx, MinRAMFraction, 2, \ + "Minimum fraction (1/n) of real memory used for maxmimum heap " \ + "size on systems with small physical memory size") \ + \ + product(uintx, InitialRAMFraction, 64, \ + "Fraction (1/n) of real memory used for initial heap size") \ \ product(bool, UseAutoGCSelectPolicy, false, \ "Use automatic collection selection policy") \ @@ -1771,7 +1794,7 @@ "Number of collections before the adaptive sizing is started") \ \ product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ - "Collecton interval for printing information, zero => never") \ + "Collecton interval for printing information; zero => never") \ \ product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ "Use adaptive minimum footprint as a goal") \ @@ -1801,7 +1824,8 @@ "Allowed collection cost difference between generations") \ \ product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ - "If collection costs are within margin, reduce both by full delta") \ + "If collection costs are within margin, reduce both by full " \ + "delta") \ \ product(uintx, YoungGenerationSizeIncrement, 20, \ "Adaptive size percentage change in young generation") \ @@ -2520,7 +2544,7 @@ \ develop(bool, VerifyCompiledCode, false, \ "Include miscellaneous runtime verifications in nmethod code; " \ - "off by default because it disturbs nmethod size heuristics.") \ + "default off because it disturbs nmethod size heuristics") \ \ \ /* compilation */ \ @@ -2782,20 +2806,28 @@ "an OS lock") \ \ /* gc parameters */ \ - product(uintx, MaxHeapSize, ScaleForWordSize(64*M), \ - "Default maximum size for object heap (in bytes)") \ - \ - product_pd(uintx, NewSize, \ - "Default size of new generation (in bytes)") \ + product(uintx, InitialHeapSize, 0, \ + "Initial heap size (in bytes); zero means OldSize + NewSize") \ + \ + product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \ + "Maximum heap size (in bytes)") \ + \ + product(uintx, OldSize, ScaleForWordSize(4*M), \ + "Initial tenured generation size (in bytes)") \ + \ + product(uintx, NewSize, ScaleForWordSize(4*M), \ + "Initial new generation size (in bytes)") \ \ product(uintx, MaxNewSize, max_uintx, \ - "Maximum size of new generation (in bytes)") \ + "Maximum new generation size (in bytes), max_uintx means set " \ + "ergonomically") \ \ product(uintx, PretenureSizeThreshold, 0, \ - "Max size in bytes of objects allocated in DefNew generation") \ - \ - product_pd(uintx, TLABSize, \ - "Default (or starting) size of TLAB (in bytes)") \ + "Maximum size in bytes of objects allocated in DefNew " \ + "generation; zero means no maximum") \ + \ + product(uintx, TLABSize, 0, \ + "Starting TLAB size (in bytes); zero means set ergonomically") \ \ product(uintx, MinTLABSize, 2*K, \ "Minimum allowed TLAB size (in bytes)") \ @@ -2812,10 +2844,10 @@ product(uintx, TLABWasteIncrement, 4, \ "Increment allowed waste at slow allocation") \ \ - product_pd(intx, SurvivorRatio, \ + product(intx, SurvivorRatio, 8, \ "Ratio of eden/survivor space size") \ \ - product_pd(intx, NewRatio, \ + product(intx, NewRatio, 2, \ "Ratio of new/old generation sizes") \ \ product(uintx, MaxLiveObjectEvacuationRatio, 100, \ @@ -2825,11 +2857,8 @@ "Additional size added to desired new generation size per " \ "non-daemon thread (in bytes)") \ \ - product(uintx, OldSize, ScaleForWordSize(4096*K), \ - "Default size of tenured generation (in bytes)") \ - \ product_pd(uintx, PermSize, \ - "Default size of permanent generation (in bytes)") \ + "Initial size of permanent generation (in bytes)") \ \ product_pd(uintx, MaxPermSize, \ "Maximum size of permanent generation (in bytes)") \
--- a/src/share/vm/runtime/globals_extension.hpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/share/vm/runtime/globals_extension.hpp Thu Oct 29 11:45:09 2009 -0400 @@ -202,6 +202,7 @@ static void boolAtPut(CommandLineFlagWithType flag, bool value, FlagValueOrigin origin); static void intxAtPut(CommandLineFlagWithType flag, intx value, FlagValueOrigin origin); static void uintxAtPut(CommandLineFlagWithType flag, uintx value, FlagValueOrigin origin); + static void uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, FlagValueOrigin origin); static void doubleAtPut(CommandLineFlagWithType flag, double value, FlagValueOrigin origin); static void ccstrAtPut(CommandLineFlagWithType flag, ccstr value, FlagValueOrigin origin);
--- a/src/share/vm/services/management.cpp Wed Oct 21 21:34:37 2009 -0700 +++ b/src/share/vm/services/management.cpp Thu Oct 29 11:45:09 2009 -0400 @@ -790,7 +790,7 @@ assert(!has_undefined_init_size, "Undefined init size"); assert(!has_undefined_max_size, "Undefined max size"); - MemoryUsage usage((heap ? Arguments::initial_heap_size() : total_init), + MemoryUsage usage((heap ? InitialHeapSize : total_init), total_used, total_committed, (heap ? Universe::heap()->max_capacity() : total_max));