September 2008 - hotspot-gc-dev

hg: jdk7/hotspot-gc/hotspot: 30 new changesets
by andrey.petrusenko＠sun.com 19 Sep '08

19 Sep '08

Changeset: fa4d1d240383 Author: never Date: 2008-08-26 15:49 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/fa4d1d240383 6741642: bad enum definition in ciTypeFlow.hpp Reviewed-by: rasbold, martin Contributed-by: doko(a)ubuntu.com ! src/share/vm/ci/ciTypeFlow.hpp Changeset: dc7f315e41f7 Author: never Date: 2008-08-27 00:21 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/dc7f315e41f7 5108146: Merge i486 and amd64 cpu directories 6459804: Want client (c1) compiler for x86_64 (amd64) for faster start-up Reviewed-by: kvn + make/solaris/makefiles/reorder_COMPILER1_amd64 ! make/solaris/makefiles/reorder_COMPILER1_i486 ! src/cpu/sparc/vm/c1_LIRGenerator_sparc.cpp ! src/cpu/sparc/vm/relocInfo_sparc.cpp ! src/cpu/sparc/vm/sharedRuntime_sparc.cpp + src/cpu/x86/vm/assembler_x86.cpp + src/cpu/x86/vm/assembler_x86.hpp + src/cpu/x86/vm/assembler_x86.inline.hpp - src/cpu/x86/vm/assembler_x86_32.cpp - src/cpu/x86/vm/assembler_x86_32.hpp - src/cpu/x86/vm/assembler_x86_32.inline.hpp - src/cpu/x86/vm/assembler_x86_64.cpp - src/cpu/x86/vm/assembler_x86_64.hpp - src/cpu/x86/vm/assembler_x86_64.inline.hpp ! src/cpu/x86/vm/c1_CodeStubs_x86.cpp ! src/cpu/x86/vm/c1_Defs_x86.hpp ! src/cpu/x86/vm/c1_FrameMap_x86.cpp ! src/cpu/x86/vm/c1_FrameMap_x86.hpp ! src/cpu/x86/vm/c1_LIRAssembler_x86.cpp ! src/cpu/x86/vm/c1_LIRAssembler_x86.hpp ! src/cpu/x86/vm/c1_LIRGenerator_x86.cpp ! src/cpu/x86/vm/c1_LinearScan_x86.hpp ! src/cpu/x86/vm/c1_MacroAssembler_x86.cpp ! src/cpu/x86/vm/c1_MacroAssembler_x86.hpp ! src/cpu/x86/vm/c1_Runtime1_x86.cpp ! src/cpu/x86/vm/cppInterpreter_x86.cpp ! src/cpu/x86/vm/dump_x86_32.cpp ! src/cpu/x86/vm/dump_x86_64.cpp ! src/cpu/x86/vm/frame_x86.cpp ! src/cpu/x86/vm/frame_x86.inline.hpp ! src/cpu/x86/vm/icache_x86.cpp ! src/cpu/x86/vm/interp_masm_x86_32.cpp ! src/cpu/x86/vm/interp_masm_x86_32.hpp ! src/cpu/x86/vm/interp_masm_x86_64.cpp ! src/cpu/x86/vm/interp_masm_x86_64.hpp ! src/cpu/x86/vm/interpreterRT_x86_32.cpp ! src/cpu/x86/vm/interpreterRT_x86_64.cpp ! src/cpu/x86/vm/interpreter_x86_32.cpp ! src/cpu/x86/vm/interpreter_x86_64.cpp ! src/cpu/x86/vm/jniFastGetField_x86_32.cpp ! src/cpu/x86/vm/jniFastGetField_x86_64.cpp ! src/cpu/x86/vm/nativeInst_x86.cpp ! src/cpu/x86/vm/nativeInst_x86.hpp ! src/cpu/x86/vm/relocInfo_x86.cpp ! src/cpu/x86/vm/runtime_x86_32.cpp ! src/cpu/x86/vm/sharedRuntime_x86_32.cpp ! src/cpu/x86/vm/sharedRuntime_x86_64.cpp ! src/cpu/x86/vm/stubGenerator_x86_32.cpp ! src/cpu/x86/vm/stubGenerator_x86_64.cpp ! src/cpu/x86/vm/stubRoutines_x86_32.cpp ! src/cpu/x86/vm/stubRoutines_x86_32.hpp ! src/cpu/x86/vm/stubRoutines_x86_64.cpp ! src/cpu/x86/vm/stubRoutines_x86_64.hpp ! src/cpu/x86/vm/templateInterpreter_x86_32.cpp ! src/cpu/x86/vm/templateInterpreter_x86_64.cpp ! src/cpu/x86/vm/templateTable_x86_32.cpp ! src/cpu/x86/vm/templateTable_x86_32.hpp ! src/cpu/x86/vm/templateTable_x86_64.cpp ! src/cpu/x86/vm/vm_version_x86_32.cpp ! src/cpu/x86/vm/vm_version_x86_64.cpp ! src/cpu/x86/vm/vtableStubs_x86_32.cpp ! src/cpu/x86/vm/vtableStubs_x86_64.cpp ! src/cpu/x86/vm/x86_32.ad ! src/cpu/x86/vm/x86_64.ad + src/os_cpu/linux_x86/vm/assembler_linux_x86.cpp - src/os_cpu/linux_x86/vm/assembler_linux_x86_32.cpp - src/os_cpu/linux_x86/vm/assembler_linux_x86_64.cpp + src/os_cpu/solaris_x86/vm/assembler_solaris_x86.cpp - src/os_cpu/solaris_x86/vm/assembler_solaris_x86_32.cpp - src/os_cpu/solaris_x86/vm/assembler_solaris_x86_64.cpp ! src/os_cpu/solaris_x86/vm/solaris_x86_32.ad + src/os_cpu/windows_x86/vm/assembler_windows_x86.cpp - src/os_cpu/windows_x86/vm/assembler_windows_x86_32.cpp - src/os_cpu/windows_x86/vm/assembler_windows_x86_64.cpp ! src/os_cpu/windows_x86/vm/os_windows_x86.cpp ! src/share/vm/c1/c1_FrameMap.cpp ! src/share/vm/c1/c1_LIR.cpp ! src/share/vm/c1/c1_LIR.hpp ! src/share/vm/c1/c1_LIRAssembler.cpp ! src/share/vm/c1/c1_LIRAssembler.hpp ! src/share/vm/c1/c1_LIRGenerator.cpp ! src/share/vm/c1/c1_LinearScan.cpp ! src/share/vm/c1/c1_LinearScan.hpp ! src/share/vm/c1/c1_Runtime1.cpp ! src/share/vm/code/relocInfo.hpp ! src/share/vm/includeDB_compiler1 ! src/share/vm/includeDB_compiler2 ! src/share/vm/includeDB_core ! src/share/vm/includeDB_features ! src/share/vm/runtime/vmStructs.cpp ! src/share/vm/utilities/macros.hpp Changeset: ab075d07f1ba Author: kvn Date: 2008-08-27 09:15 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/ab075d07f1ba 6736417: Fastdebug C2 crashes in StoreBNode::Ideal Summary: The result of step_through_mergemem() and remove_dead_region() is not checked in some cases. Reviewed-by: never ! src/share/vm/opto/callnode.cpp ! src/share/vm/opto/connode.cpp ! src/share/vm/opto/divnode.cpp ! src/share/vm/opto/memnode.cpp ! src/share/vm/opto/node.cpp ! src/share/vm/opto/phaseX.cpp Changeset: af945ba2e739 Author: kvn Date: 2008-08-27 14:47 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/af945ba2e739 6741738: TypePtr::add_offset() set incorrect offset when the add overflows Summary: Set offset to OffsetBot when the add overflows in TypePtr::add_offset() Reviewed-by: jrose, never ! src/share/vm/opto/addnode.cpp ! src/share/vm/opto/escape.cpp ! src/share/vm/opto/macro.cpp ! src/share/vm/opto/type.cpp ! src/share/vm/opto/type.hpp + test/compiler/6741738/Tester.java Changeset: 892493c3d862 Author: kvn Date: 2008-08-27 16:33 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/892493c3d862 6732732: CTW with EA: assert(n != 0L,"Bad immediate dominator info.") Summary: Missing edge to a call's return value in EA Connection Graph. Reviewed-by: never ! src/share/vm/opto/escape.cpp Changeset: 756b58154237 Author: rasbold Date: 2008-08-28 10:22 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/756b58154237 6611837: block frequency is zero Summary: insert_goto_at should set frequency for newly created blocks Reviewed-by: never ! src/share/vm/opto/block.cpp ! src/share/vm/opto/gcm.cpp Changeset: eaf496ad4a14 Author: never Date: 2008-08-28 23:03 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/eaf496ad4a14 6732698: crash with dead code from compressed oops in gcm Reviewed-by: rasbold ! src/share/vm/opto/matcher.cpp Changeset: cf6f0e32e518 Author: rasbold Date: 2008-09-02 06:55 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/cf6f0e32e518 Merge - src/cpu/x86/vm/assembler_x86_32.cpp - src/cpu/x86/vm/assembler_x86_32.hpp - src/cpu/x86/vm/assembler_x86_32.inline.hpp - src/cpu/x86/vm/assembler_x86_64.cpp - src/cpu/x86/vm/assembler_x86_64.hpp - src/cpu/x86/vm/assembler_x86_64.inline.hpp - src/os_cpu/linux_x86/vm/assembler_linux_x86_32.cpp - src/os_cpu/linux_x86/vm/assembler_linux_x86_64.cpp - src/os_cpu/solaris_x86/vm/assembler_solaris_x86_32.cpp - src/os_cpu/solaris_x86/vm/assembler_solaris_x86_64.cpp - src/os_cpu/windows_x86/vm/assembler_windows_x86_32.cpp - src/os_cpu/windows_x86/vm/assembler_windows_x86_64.cpp Changeset: 25c3145237c6 Author: poonam Date: 2008-08-27 22:45 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/25c3145237c6 6731958: Include all the SA classes into sa-jdi.jar Summary: sa-jdi.jar bundled with JDK should include all the SA classes. Reviewed-by: swamyv ! agent/make/build-pkglist ! make/linux/makefiles/sa.make ! make/sa.files ! make/solaris/makefiles/sa.make ! make/windows/makefiles/sa.make Changeset: 9223f5bb0bf7 Author: poonam Date: 2008-08-28 18:17 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/9223f5bb0bf7 Merge Changeset: a10808f5a4b5 Author: dcubed Date: 2008-09-02 08:30 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/a10808f5a4b5 Merge Changeset: 3a26e9e4be71 Author: never Date: 2008-09-03 14:57 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/3a26e9e4be71 6744422: incorrect handling of -1 in set_jump_destination Reviewed-by: rasbold ! src/cpu/x86/vm/nativeInst_x86.hpp Changeset: 5251a9cd8eb8 Author: jcoomes Date: 2008-08-27 15:41 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/5251a9cd8eb8 6742207: jdk7 32-bit windows build failed running pack200 Summary: 6730514 inadvertently disabled perm gen expansion; reenable Reviewed-by: ysr ! src/share/vm/memory/compactingPermGenGen.cpp ! src/share/vm/memory/compactingPermGenGen.hpp Changeset: 5967ae2171f6 Author: xdono Date: 2008-08-28 11:05 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/5967ae2171f6 Added tag jdk7-b34 for changeset 5251a9cd8eb8 ! .hgtags Changeset: 5c7c20a84e41 Author: trims Date: 2008-09-04 18:40 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/5c7c20a84e41 6745064: Update Hotspot build number for HS14 Summary: Bump build number for hs14-b04 Reviewed-by: jcoomes ! make/hotspot_version Changeset: 5fa96a5a7e76 Author: trims Date: 2008-09-04 18:40 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/5fa96a5a7e76 Merge - src/cpu/x86/vm/assembler_x86_32.cpp - src/cpu/x86/vm/assembler_x86_32.hpp - src/cpu/x86/vm/assembler_x86_32.inline.hpp - src/cpu/x86/vm/assembler_x86_64.cpp - src/cpu/x86/vm/assembler_x86_64.hpp - src/cpu/x86/vm/assembler_x86_64.inline.hpp - src/os_cpu/linux_x86/vm/assembler_linux_x86_32.cpp - src/os_cpu/linux_x86/vm/assembler_linux_x86_64.cpp - src/os_cpu/solaris_x86/vm/assembler_solaris_x86_32.cpp - src/os_cpu/solaris_x86/vm/assembler_solaris_x86_64.cpp - src/os_cpu/windows_x86/vm/assembler_windows_x86_32.cpp - src/os_cpu/windows_x86/vm/assembler_windows_x86_64.cpp Changeset: 60bc5071073f Author: never Date: 2008-09-02 15:03 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/60bc5071073f 6738933: assert with base pointers must match with compressed oops enabled Reviewed-by: kvn, rasbold ! src/share/vm/opto/loopopts.cpp Changeset: cdbee661c7da Author: rasbold Date: 2008-09-04 09:03 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/cdbee661c7da Merge Changeset: 2b73d212b1fd Author: kvn Date: 2008-09-05 13:33 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/2b73d212b1fd 6676462: JVM sometimes would suddenly consume significant amount of memory Summary: Add asserts with dead loop checks in AddNode::Ideal(). Reviewed-by: never ! src/share/vm/opto/addnode.cpp Changeset: 6e7305abe64c Author: never Date: 2008-09-09 12:56 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/6e7305abe64c 6746320: Hotspot regression test for 6512111 fails in -Xmixed mode Reviewed-by: kvn ! src/cpu/x86/vm/c1_LIRAssembler_x86.cpp Changeset: f9847b70eccd Author: rasbold Date: 2008-09-10 06:15 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/f9847b70eccd Merge Changeset: b33eef719520 Author: xlu Date: 2008-08-25 13:52 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/b33eef719520 6740526: sun/management/HotspotThreadMBean/GetInternalThreads.java test failed Reviewed-by: dholmes, dcubed ! src/share/vm/runtime/thread.cpp Changeset: 23c6240101a0 Author: apangin Date: 2008-08-31 15:24 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/23c6240101a0 Merge Changeset: 93befa083681 Author: coleenp Date: 2008-09-02 15:18 -0400 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/93befa083681 6741004: UseLargePages + UseCompressedOops breaks implicit null checking guard page Summary: Turn off c2 implicit null checking on windows and large pages specified. Reviewed-by: jrose, xlu ! src/share/vm/opto/compile.cpp ! src/share/vm/runtime/arguments.cpp ! src/share/vm/runtime/globals.hpp ! src/share/vm/runtime/virtualspace.cpp Changeset: 24fc405437c9 Author: acorn Date: 2008-09-10 12:31 -0400 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/24fc405437c9 Merge - src/cpu/x86/vm/assembler_x86_32.cpp - src/cpu/x86/vm/assembler_x86_32.hpp - src/cpu/x86/vm/assembler_x86_32.inline.hpp - src/cpu/x86/vm/assembler_x86_64.cpp - src/cpu/x86/vm/assembler_x86_64.hpp - src/cpu/x86/vm/assembler_x86_64.inline.hpp - src/os_cpu/linux_x86/vm/assembler_linux_x86_32.cpp - src/os_cpu/linux_x86/vm/assembler_linux_x86_64.cpp - src/os_cpu/solaris_x86/vm/assembler_solaris_x86_32.cpp - src/os_cpu/solaris_x86/vm/assembler_solaris_x86_64.cpp - src/os_cpu/windows_x86/vm/assembler_windows_x86_32.cpp - src/os_cpu/windows_x86/vm/assembler_windows_x86_64.cpp Changeset: 1eb509f14356 Author: acorn Date: 2008-09-11 09:02 -0400 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/1eb509f14356 Merge Changeset: 68e0443dfd9c Author: ohair Date: 2008-09-11 11:04 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/68e0443dfd9c 6745363: Add ability to run packtest to hotspot/test/makefile Reviewed-by: ksrini ! make/jprt.properties ! test/Makefile Changeset: 0ba3ec980ae5 Author: dcubed Date: 2008-09-12 07:04 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/0ba3ec980ae5 Merge Changeset: f8199438385b Author: apetrusenko Date: 2008-09-17 16:49 +0400 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/f8199438385b Merge ! src/cpu/sparc/vm/c1_LIRGenerator_sparc.cpp ! src/cpu/sparc/vm/sharedRuntime_sparc.cpp ! src/cpu/x86/vm/assembler_x86.cpp ! src/cpu/x86/vm/assembler_x86.hpp ! src/cpu/x86/vm/c1_CodeStubs_x86.cpp ! src/cpu/x86/vm/c1_LIRGenerator_x86.cpp ! src/cpu/x86/vm/c1_Runtime1_x86.cpp ! src/cpu/x86/vm/interp_masm_x86_64.cpp ! src/cpu/x86/vm/stubGenerator_x86_32.cpp ! src/cpu/x86/vm/stubGenerator_x86_64.cpp ! src/cpu/x86/vm/templateTable_x86_32.cpp ! src/cpu/x86/vm/templateTable_x86_64.cpp ! src/share/vm/c1/c1_LIRAssembler.cpp ! src/share/vm/c1/c1_LIRAssembler.hpp ! src/share/vm/c1/c1_LIRGenerator.cpp ! src/share/vm/c1/c1_Runtime1.cpp ! src/share/vm/includeDB_compiler1 ! src/share/vm/includeDB_compiler2 ! src/share/vm/includeDB_core ! src/share/vm/includeDB_gc_parallel ! src/share/vm/opto/macro.cpp ! src/share/vm/runtime/vmStructs.cpp Changeset: 032ddb9432ad Author: apetrusenko Date: 2008-09-17 19:59 +0400 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/032ddb9432ad Merge ! src/share/vm/runtime/arguments.cpp ! src/share/vm/runtime/globals.hpp ! src/share/vm/runtime/thread.cpp ! src/share/vm/runtime/virtualspace.cpp

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Re: 15 Minute Garbage Collection (promotion failed)
by Robert Chansler 18 Sep '08

18 Sep '08

Yes, I¹m the Rob Chansler of the forum item. Thanks to Peter and Ramki for the early analysis. The gc logs are separate from from other system and user logs, so I¹m comfortable sharing them. One of the questions from the forum was about the many days without a CMS collection. (I think I searched the logs properly!) I do not recall such long intervals when I previously examined the logs. I¹ll peek to see if the intervals are different on different clusters. On 18 09 08 8:50, "Sanjay Radia" <sradia(a)yahoo-inc.com> wrote: > > > Yes, > Robert Chansler did post on a GC problem. I cam cc'ing him on this. > > sanjay > BTW I have seeded the getting a service contract for Java from Sun a short > while ago. > > > > On Sep 12, 2008, at 10:21 AM, Peter B. Kessler wrote: > >> >> >> >> This post >> >> http://forums.sun.com/thread.jspa?threadID=5330789 >> >> appeared on our JVM forum. Ramki (our CMS expert) has already answered >> the post (sort of), but would like to get more of the logs, discuss >> issues and solutions, etc. Is that post from Rob Chansler at Yahoo? I >> don't have his email address. Would you be willing to give me his >> address? Thanks. >> >> ... peter >> >> P.S. I can't promise that we won't try to sell him a service contract. >> :-) But in the meantime, we can offer him some support. >> >> >> > > _______________________________________________ hotspot-gc-use mailing list hotspot-gc-use(a)openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-use

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hg: jdk7/hotspot-gc/langtools: 4 new changesets
by john.coomes＠sun.com 12 Sep '08

12 Sep '08

Changeset: 8889fb6c5af0 Author: xdono Date: 2008-08-28 11:05 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/langtools/rev/8889fb6c5af0 Added tag jdk7-b34 for changeset 4026dece07e8 ! .hgtags Changeset: 37551dc0f591 Author: mcimadamore Date: 2008-08-22 11:46 +0100 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/langtools/rev/37551dc0f591 6733837: Recent work on javac diagnostic affected javac output Summary: Problems with diagnostic path and tab character in the source code Reviewed-by: darcy, jjg ! src/share/classes/com/sun/tools/javac/api/DiagnosticFormatter.java ! src/share/classes/com/sun/tools/javac/util/AbstractDiagnosticFormatter.java ! src/share/classes/com/sun/tools/javac/util/BasicDiagnosticFormatter.java ! src/share/classes/com/sun/tools/javac/util/DiagnosticSource.java ! src/share/classes/com/sun/tools/javac/util/JCDiagnostic.java ! src/share/classes/com/sun/tools/javac/util/Log.java ! src/share/classes/com/sun/tools/javac/util/RawDiagnosticFormatter.java + test/tools/javac/api/6733837/T6733837.java Changeset: 81f66dd906eb Author: tbell Date: 2008-08-29 12:42 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/langtools/rev/81f66dd906eb Merge Changeset: ae2a1418f0c8 Author: xdono Date: 2008-09-11 11:26 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/langtools/rev/ae2a1418f0c8 Added tag jdk7-b35 for changeset 81f66dd906eb ! .hgtags

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hg: jdk7/hotspot-gc/jdk: 26 new changesets
by john.coomes＠sun.com 12 Sep '08

12 Sep '08

Changeset: b010683123b3 Author: ohair Date: 2008-08-14 13:33 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/b010683123b3 6674227: Missing LICENSE file during build Summary: Just a JPRT usage issue. The top level files (like LICENSE) are needed to create the jdk image (j2sdk-image directory). Reviewed-by: tbell ! make/jprt.properties Changeset: ac68bf5140b2 Author: ohair Date: 2008-08-14 20:59 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/ac68bf5140b2 Merge - make/java/nio/spp.sh - src/windows/classes/sun/java2d/d3d/D3DBackBufferSurfaceData.java - src/windows/classes/sun/java2d/windows/DDBlitLoops.java - src/windows/classes/sun/java2d/windows/DDRenderer.java - src/windows/classes/sun/java2d/windows/DDScaleLoops.java - src/windows/classes/sun/java2d/windows/Win32OffScreenSurfaceData.java - src/windows/classes/sun/java2d/windows/Win32SurfaceData.java - src/windows/classes/sun/java2d/windows/Win32SurfaceDataProxy.java - src/windows/classes/sun/java2d/windows/WinBackBuffer.java - src/windows/classes/sun/java2d/windows/WinBackBufferSurfaceData.java - src/windows/classes/sun/java2d/windows/WinVolatileSurfaceManager.java - src/windows/native/sun/java2d/d3d/D3DRuntimeTest.cpp - src/windows/native/sun/java2d/d3d/D3DRuntimeTest.h - src/windows/native/sun/java2d/d3d/D3DTestRaster.h - src/windows/native/sun/java2d/d3d/D3DTextRenderer_md.cpp - src/windows/native/sun/java2d/d3d/D3DUtils.cpp - src/windows/native/sun/java2d/d3d/D3DUtils.h - src/windows/native/sun/java2d/windows/DDBlitLoops.cpp - src/windows/native/sun/java2d/windows/DDRenderer.cpp - src/windows/native/sun/java2d/windows/RegistryKey.cpp - src/windows/native/sun/java2d/windows/RegistryKey.h - src/windows/native/sun/java2d/windows/Win32OffScreenSurfaceData.cpp - src/windows/native/sun/java2d/windows/Win32SurfaceData.cpp - src/windows/native/sun/java2d/windows/Win32SurfaceData.h - src/windows/native/sun/java2d/windows/WinBackBufferSurfaceData.cpp - src/windows/native/sun/java2d/windows/ddrawObject.cpp - src/windows/native/sun/java2d/windows/ddrawObject.h - src/windows/native/sun/java2d/windows/ddrawUtils.cpp - src/windows/native/sun/java2d/windows/ddrawUtils.h - src/windows/native/sun/java2d/windows/dxCapabilities.cpp - src/windows/native/sun/java2d/windows/dxCapabilities.h - src/windows/native/sun/java2d/windows/dxInit.cpp - src/windows/native/sun/java2d/windows/dxInit.h Changeset: db4bd081eff2 Author: ksrini Date: 2008-08-19 07:50 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/db4bd081eff2 6614210: JPRT Windows 32bit msival2 build failure when building 'install' workspace Summary: suppresses wscript's modal dialog on error and no msi validation for jprt. Reviewed-by: ohair, jmelvin ! make/common/shared/Defs-windows.gmk Changeset: 434055a0716e Author: xdono Date: 2008-08-21 09:55 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/434055a0716e Merge Changeset: bf580c41f68f Author: xdono Date: 2008-08-28 11:05 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/bf580c41f68f Added tag jdk7-b34 for changeset 434055a0716e ! .hgtags Changeset: cf403a69449a Author: jjh Date: 2008-08-15 18:06 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/cf403a69449a 6737900: TEST: Some JDI regression tests timeout on slow machines Summary: Don't execute useless code, and split test into multiple @runs. Reviewed-by: tbell ! test/com/sun/jdi/ClassesByName2Test.java ! test/com/sun/jdi/ConnectedVMs.java ! test/com/sun/jdi/sde/MangleStepTest.java Changeset: e093efae8c5f Author: ohair Date: 2008-08-17 17:02 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/e093efae8c5f 6496269: Many warnings generated from com/sun/java/util/jar/pack/*.cpp when compiled on Linux Summary: Removal of compiler warnings and fixing of assert logic. Reviewed-by: jrose, ksrini, bristor ! src/share/native/com/sun/java/util/jar/pack/bands.cpp ! src/share/native/com/sun/java/util/jar/pack/bytes.cpp ! src/share/native/com/sun/java/util/jar/pack/bytes.h ! src/share/native/com/sun/java/util/jar/pack/coding.cpp ! src/share/native/com/sun/java/util/jar/pack/coding.h ! src/share/native/com/sun/java/util/jar/pack/defines.h ! src/share/native/com/sun/java/util/jar/pack/jni.cpp ! src/share/native/com/sun/java/util/jar/pack/main.cpp ! src/share/native/com/sun/java/util/jar/pack/unpack.cpp ! src/share/native/com/sun/java/util/jar/pack/unpack.h ! src/share/native/com/sun/java/util/jar/pack/utils.cpp ! src/share/native/com/sun/java/util/jar/pack/utils.h ! src/share/native/com/sun/java/util/jar/pack/zip.cpp ! src/share/native/com/sun/java/util/jar/pack/zip.h Changeset: 092985e71d9e Author: tbell Date: 2008-08-18 09:20 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/092985e71d9e Merge Changeset: 17527939e5b1 Author: swamyv Date: 2008-08-18 15:28 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/17527939e5b1 6705893: javax.script tests should not require a js engine on OpenJDK Summary: Fixed the tests to pass with open JDK. Reviewed-by: darcy ! test/javax/script/E4XErrorTest.java + test/javax/script/Helper.java ! test/javax/script/JavaScriptScopeTest.java ! test/javax/script/NullUndefinedVarTest.java ! test/javax/script/PluggableContextTest.java ! test/javax/script/ProviderTest.java ! test/javax/script/RhinoExceptionTest.java ! test/javax/script/Test1.java ! test/javax/script/Test2.java ! test/javax/script/Test3.java ! test/javax/script/Test4.java ! test/javax/script/Test5.java ! test/javax/script/Test6.java ! test/javax/script/Test7.java ! test/javax/script/Test8.java ! test/javax/script/VersionTest.java + test/sun/tools/jrunscript/CheckEngine.java ! test/sun/tools/jrunscript/common.sh ! test/sun/tools/jrunscript/jrunscript-DTest.sh ! test/sun/tools/jrunscript/jrunscript-argsTest.sh ! test/sun/tools/jrunscript/jrunscript-cpTest.sh ! test/sun/tools/jrunscript/jrunscript-eTest.sh ! test/sun/tools/jrunscript/jrunscript-fTest.sh ! test/sun/tools/jrunscript/jrunscriptTest.sh Changeset: b6f746b0ecc4 Author: swamyv Date: 2008-08-19 12:46 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/b6f746b0ecc4 6736461: ThreadMXBean Locks.java fails intermittently. Summary: Fixed the test to wait for the right state before calling check thread information. Reviewed-by: jjh ! test/java/lang/management/ThreadMXBean/Locks.java Changeset: 1b114828900b Author: tbell Date: 2008-08-19 16:05 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/1b114828900b Merge Changeset: 9f53e194687c Author: tbell Date: 2008-08-25 23:33 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/9f53e194687c Merge Changeset: dc4067f914a2 Author: martin Date: 2008-08-20 13:45 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/dc4067f914a2 6739302: Check that deserialization preserves EnumSet integrity Reviewed-by: dl, chegar Contributed-by: jjb(a)google.com ! src/share/classes/java/util/EnumSet.java + test/java/util/EnumSet/BogusEnumSet.java Changeset: 52fbd007f47b Author: swamyv Date: 2008-08-22 10:37 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/52fbd007f47b 6653883: jmap with no option should print mmap instead of heap information. Summary: Changed the default option of jmap to print mmap. Reviewed-by: jjh ! src/share/classes/sun/tools/jmap/JMap.java Changeset: 3a4370604bab Author: ohair Date: 2008-08-22 12:24 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/3a4370604bab 6732421: Removed old javavm and Classic VM files from the jdk7 sources Reviewed-by: alanb ! make/common/Defs.gmk ! make/java/verify/Makefile ! make/netbeans/awt2d/README ! make/tools/GenerateCharacter/check_class.c.template ! src/share/back/debugDispatch.c ! src/share/back/error_messages.c ! src/share/back/inStream.c ! src/share/back/outStream.h ! src/share/instrument/InstrumentationImplNativeMethods.c ! src/share/instrument/JPLISAgent.c ! src/share/javavm/export/jvm.h - src/share/javavm/include/opcodes.h - src/share/javavm/include/opcodes.length - src/share/javavm/include/opcodes.list - src/share/javavm/include/opcodes.weight - src/share/javavm/include/opcodes.wide - src/share/javavm/include/sys_api.h - src/share/javavm/include/typedefs.h ! src/share/native/common/check_code.c ! src/share/native/common/check_format.c ! src/solaris/back/util_md.h ! src/solaris/instrument/FileSystemSupport_md.h ! src/solaris/javavm/export/jvm_md.h - src/solaris/javavm/include/typedefs_md.h ! src/solaris/native/common/gdefs_md.h ! src/solaris/native/common/jlong_md.h ! src/windows/back/util_md.h ! src/windows/hpi/src/socket_md.c ! src/windows/hpi/src/threads_md.c ! src/windows/instrument/FileSystemSupport_md.h ! src/windows/javavm/export/jvm_md.h - src/windows/javavm/include/typedefs_md.h ! src/windows/native/java/net/net_util_md.c Changeset: 3dcc69147ff9 Author: sherman Date: 2008-08-22 14:37 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/3dcc69147ff9 4486841: UTF-8 decoder should adhere to corrigendum to Unicode 3.0.1 6636317: Optimize UTF-8 coder for ASCII input Summary: re-write the UTF-8 charset to obey the standard and improve the performance Reviewed-by: alanb ! src/share/classes/sun/nio/cs/UTF_8.java + test/sun/nio/cs/TestUTF8.java Changeset: a33cf5828b82 Author: sherman Date: 2008-08-22 22:54 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/a33cf5828b82 6740702: Comment tag update Summary: tag update Reviewed-by: mr ! src/share/classes/sun/nio/cs/UTF_8.java Changeset: a4ff2fe5b5d9 Author: weijun Date: 2008-08-06 08:11 +0800 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/a4ff2fe5b5d9 6731685: CertificateFactory.generateCertificates throws IOException on PKCS7 cert chain Reviewed-by: mullan ! src/share/classes/sun/security/util/DerIndefLenConverter.java + test/sun/security/util/DerValue/Indefinite.java Changeset: 97d08b2b4539 Author: chegar Date: 2008-08-06 07:14 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/97d08b2b4539 6734171: java.net.NetworkInterface reports XCheck:jni warnings Summary: Removed leading "L" or trailing ";" from FindClass classname param Reviewed-by: alanb ! src/windows/native/java/net/NetworkInterface.c Changeset: 874f4db252e3 Author: wetmore Date: 2008-08-20 00:41 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/874f4db252e3 Merge Changeset: afcf04c535da Author: michaelm Date: 2008-08-21 10:04 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/afcf04c535da 6258215: Num of backlog in ServerSocket(int, int) should be mentioned more explicitly Summary: updated javadoc Reviewed-by: chegar ! src/share/classes/java/net/ServerSocket.java ! src/share/classes/javax/net/ssl/SSLServerSocket.java Changeset: f4289d75cd29 Author: jccollet Date: 2008-08-25 14:38 +0200 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/f4289d75cd29 6717876: Make java.net.NetworkInterface.getIndex() public Summary: Make getIndex() and getByIndex() public. Required a name change in native code Reviewed-by: alanb, chegar, michaelm ! make/java/net/mapfile-vers ! src/share/classes/java/net/NetworkInterface.java ! src/solaris/native/java/net/NetworkInterface.c ! src/solaris/native/java/net/PlainDatagramSocketImpl.c ! src/windows/native/java/net/NetworkInterface.c ! src/windows/native/java/net/NetworkInterface_winXP.c ! src/windows/native/java/net/TwoStacksPlainDatagramSocketImpl.c ! src/windows/native/java/net/net_util_md.h + test/java/net/NetworkInterface/IndexTest.java Changeset: 872241636752 Author: wetmore Date: 2008-08-25 08:11 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/872241636752 Merge Changeset: c5f211538cad Author: tbell Date: 2008-08-25 23:37 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/c5f211538cad Merge - src/share/javavm/include/opcodes.h - src/share/javavm/include/opcodes.length - src/share/javavm/include/opcodes.list - src/share/javavm/include/opcodes.weight - src/share/javavm/include/opcodes.wide - src/share/javavm/include/sys_api.h - src/share/javavm/include/typedefs.h - src/solaris/javavm/include/typedefs_md.h - src/windows/javavm/include/typedefs_md.h Changeset: cf4894b78ceb Author: tbell Date: 2008-08-29 12:40 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/cf4894b78ceb Merge Changeset: baae64ef16f6 Author: xdono Date: 2008-09-11 11:25 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jdk/rev/baae64ef16f6 Added tag jdk7-b35 for changeset cf4894b78ceb ! .hgtags

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hg: jdk7/hotspot-gc/jaxws: 2 new changesets
by john.coomes＠sun.com 12 Sep '08

12 Sep '08

Changeset: b0f01c2508b6 Author: xdono Date: 2008-08-28 11:05 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jaxws/rev/b0f01c2508b6 Added tag jdk7-b34 for changeset 7a9f629cd957 ! .hgtags Changeset: f60187f44a0d Author: xdono Date: 2008-09-11 11:25 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jaxws/rev/f60187f44a0d Added tag jdk7-b35 for changeset b0f01c2508b6 ! .hgtags

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hg: jdk7/hotspot-gc/jaxp: 2 new changesets
by john.coomes＠sun.com 12 Sep '08

12 Sep '08

Changeset: eac46d1eb7f0 Author: xdono Date: 2008-08-28 11:05 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jaxp/rev/eac46d1eb7f0 Added tag jdk7-b34 for changeset 01facdf8cabd ! .hgtags Changeset: c84ca638db42 Author: xdono Date: 2008-09-11 11:25 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/jaxp/rev/c84ca638db42 Added tag jdk7-b35 for changeset eac46d1eb7f0 ! .hgtags

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hg: jdk7/hotspot-gc/corba: 2 new changesets
by john.coomes＠sun.com 12 Sep '08

12 Sep '08

Changeset: 3867c4d14a5b Author: xdono Date: 2008-08-28 11:05 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/corba/rev/3867c4d14a5b Added tag jdk7-b34 for changeset 0a812b9824e5 ! .hgtags Changeset: 545dffad4849 Author: xdono Date: 2008-09-11 11:25 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/corba/rev/545dffad4849 Added tag jdk7-b35 for changeset 3867c4d14a5b ! .hgtags

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hg: jdk7/hotspot-gc: 3 new changesets
by john.coomes＠sun.com 12 Sep '08

12 Sep '08

Changeset: 46a989ab9329 Author: ohair Date: 2008-08-17 09:56 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/rev/46a989ab9329 6737659: debug bundles are empty Summary: Build order issue with debug build, caused final debug bundle to be empty. Reviewed-by: tbell ! Makefile Changeset: 143c1abedb7d Author: xdono Date: 2008-08-28 11:05 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/rev/143c1abedb7d Added tag jdk7-b34 for changeset 46a989ab9329 ! .hgtags Changeset: 4d52a6465eb0 Author: xdono Date: 2008-09-11 11:25 -0700 URL: http://hg.openjdk.java.net/jdk7/hotspot-gc/rev/4d52a6465eb0 Added tag jdk7-b35 for changeset 143c1abedb7d ! .hgtags

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Re: Reducing CMS-remark times
by Y Srinivas Ramakrishna 11 Sep '08

11 Sep '08

Hi Justin -- > Here's my current trains of thought: > > a) My load generator is not very close to real-world load. Probably :) > b) There are some OS level tunables that need set on the v490 I don't think those would account for the diff. I know of no specific OS tunables in this case. > c) There is a bug in 1.4.2_17 that's biting me. Unlikely. > d) I'm not getting concurrency in the remark phase (which would > explain my dual core laptop keeping up with my 8 core server) The remark phase has never been "concurrent" (at least not in the sense of being concurrent with mutators); instead it's "stop-the-world". The application threads are all stopped while the remark phase proceeds, which is why long remark pauses hurt a lot. > d) I'm running into what Jon is describing here: > http://blogs.sun.com/jonthecollector/entry/did_you_know regarding > CMSMaxAbortablePrecleanTime. I have no idea how I can resolve this on > 1.4.2 if that's the case. Perhaps shrink my New??? Right. The best way to see evidence of this is to use -XX:PrintCMSStatistics=1. You will, in the remark phase, see details on how much time is spent in which worker thread, and you'll notice that one of the threads takes extremely long. This is the thread scanning a large monolithic Eden, which becomes a serial bottleneck for this phase. The parallelization of Eden scanning was implemented in 5.0, so your best bet is to upgrade to a newer jvm if possible, and failing that to use a smaller young gen. Another optional tuning switch introduced in 5uXX was +CMSScavengeBeforeRemark which does a scavenge which empties Eden imediately before doing a remark. This makes what was the critical task here into a zero-length task, and converts that work into more dirty cards in the old gen which are scanned in parallel, leading to a reduction in the pause time. Unfortunately, that's also only available in 5uXX for the first time. All the extra processors on yr v490 cannot help for a large serial task in this case (1.4.2_XX). That said, if you compare the remark phases for the two snippets you give also indicate that yr production system also sees a large "weak reference" processing time, which is not the case on yr laptop. I suspect that might be the result of a difference between yr production load and yr synthetic load on the laptop. This again is a serial phase by default that the extra cpus on the v490 do not help on. This phase was optimized some on 5uXX (by adding a parallel reference processing option), and further in 6uXX (by enhancing precleaning of discovered references). I don;t believe either of those optimizations was ever backported to 1.4.2_XX. 1.4.2_XX is really quite old and it shows its age, wrt modern servers with much parallelism. -- ramki > Production server: > .... > > 18999.700: [GC18999.700: [Rescan (parallel) , 1.0845970 > secs]19000.785: [weak refs processing, 1.0721075 secs] [1 CMS-remark: > 1610403K(1966080K)] 1894660K(2310144K), 2.1578777 secs] > Laptop: > 12457.363: [GC12457.363: [Rescan (parallel) , 1.9972650 > secs]12459.360: [weak refs processing, 0.1239550 secs] [1 CMS-remark: > 1620532K(1966080K)] 1941855K(2310144K), 2.1214010 secs] _______________________________________________ hotspot-gc-use mailing list hotspot-gc-use(a)openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-use

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Reducing CMS-remark times
by Justin Ellison 11 Sep '08

11 Sep '08

Hi all, Running a Weblogic jsp application on 1.4.2_17 on 32bit Sparc under Solaris 9. Here are the args: -Xms2304m -Xmx2304m -XX:NewSize=384m -XX:MaxNewSize=384m -XX:CompileThreshold=3000 -Djava.net.setSoTimeout=20000 -XX:LargePageSizeInBytes=4m -XX:+UseMPSS -Xss128k -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSParallelRemarkEnabled -Xnoclassgc -XX:ParallelGCThreads=4 -XX:MaxTenuringThreshold=8 -XX:SurvivorRatio=6 -XX:+UseCMSCompactAtFullCollection -Xloggc:gc.out -verbose:gc -XX:+PrintGCTimeStamps -XX:+PrintGCDetails -XX:MaxPermSize=92m I'm seeing CMS-remark pauses that get longer and longer as time goes on, some getting to be 3 seconds or more. It's apples to oranges, I know, but my Core 2 Duo laptop running Ubuntu 8.04 and 1.4.2_18 with the same arguments under a load generator performs consistently better than production. The production application is on a Sun Fire v490 - it should run circles around my laptop. Here's the output of PrintGCStats against my laptop: what count total mean max stddev gen0(s) 8129 1337.382 0.16452 0.812 0.0663 gen0t(s) 8129 1341.128 0.16498 1.132 0.0676 cmsIM(s) 4504 896.872 0.19913 0.542 0.1039 cmsRM(s) 4485 2129.909 0.47490 2.121 0.2060 GC(s) 12633 4367.908 0.34575 2.121 0.1184 cmsCM(s) 4503 37508.595 8.32969 45.481 1.5792 cmsCP(s) 4490 1158.141 0.25794 26.034 0.6600 cmsCS(s) 4485 6408.843 1.42895 11.013 0.3527 cmsCR(s) 4480 162.617 0.03630 0.441 0.0128 alloc(MB) 8129 2340385.405 287.90570 288.000 1.6059 promo(MB) 8129 30006.814 3.69133 73.405 4.4811 and against the v490: bmapp2d-gc.out what count total mean max stddev gen0(s) 4739 917.710 0.19365 0.765 0.0483 gen0t(s) 4739 919.012 0.19393 0.765 0.0483 cmsIM(s) 34 4.421 0.13003 0.510 0.0728 cmsRM(s) 34 52.707 1.55019 2.327 0.4003 GC(s) 4773 976.140 0.20451 2.327 0.1273 cmsCM(s) 34 455.876 13.40812 26.797 2.9626 cmsCP(s) 34 5.279 0.15526 0.285 0.0572 cmsCS(s) 34 265.217 7.80050 8.741 0.6182 cmsCR(s) 34 8.585 0.25250 0.295 0.0137 alloc(MB) 4739 1364784.244 287.98992 288.000 0.0525 promo(MB) 4739 15492.045 3.26905 19.177 3.1992 alloc/elapsed_time = 1364784.244 MB / 77242.704 s = 17.669 MB/s alloc/tot_cpu_time = 1364784.244 MB / 617941.632 s = 2.209 MB/s alloc/mut_cpu_time = 1364784.244 MB / 609397.559 s = 2.240 MB/s promo/elapsed_time = 15492.045 MB / 77242.704 s = 0.201 MB/s promo/gc0_time = 15492.045 MB / 919.012 s = 16.857 MB/s gc_seq_load = 7809.116 s / 617941.632 s = 1.264% gc_conc_load = 734.957 s / 617941.632 s = 0.119% gc_tot_load = 8544.073 s / 617941.632 s = 1.383% Especially of note it the difference in mean remark times between the two above. I've placed full log snippets at the bottom of this email. Here's my current trains of thought: a) My load generator is not very close to real-world load. b) There are some OS level tunables that need set on the v490 c) There is a bug in 1.4.2_17 that's biting me. d) I'm not getting concurrency in the remark phase (which would explain my dual core laptop keeping up with my 8 core server) d) I'm running into what Jon is describing here: http://blogs.sun.com/jonthecollector/entry/did_you_know regarding CMSMaxAbortablePrecleanTime. I have no idea how I can resolve this on 1.4.2 if that's the case. Perhaps shrink my New??? Bah! I've been working on this for too long, and I'm going in circles. Can anyone offer up any insights? Justin Production server: .... 18959.886: [GC 18959.886: [ParNew: 322704K->29504K(344064K), 0.2497164 secs] 1912832K->1624273K(2310144K), 0.2498432 secs] 18968.737: [GC 18968.737: [ParNew: 324416K->22709K(344064K), 0.2113128 secs] 1919185K->1625475K(2310144K), 0.2114685 secs] 18981.220: [GC 18981.220: [ParNew: 317621K->29164K(344064K), 0.1744130 secs] 1920387K->1631931K(2310144K), 0.1746267 secs] 18987.149: [GC 18987.149: [ParNew: 324076K->24086K(344064K), 0.2326857 secs] 1926843K->1634489K(2310144K), 0.2328768 secs] 18987.382: [GC [1 CMS-initial-mark: 1610403K(1966080K)] 1634489K(2310144K), 0.1155761 secs] 18987.498: [CMS-concurrent-mark-start] 18999.599: [CMS-concurrent-mark: 12.101/12.101 secs] 18999.599: [CMS-concurrent-preclean-start] 18999.698: [CMS-concurrent-preclean: 0.094/0.099 secs] 18999.700: [GC18999.700: [Rescan (parallel) , 1.0845970 secs]19000.785: [weak refs processing, 1.0721075 secs] [1 CMS-remark: 1610403K(1966080K)] 1894660K(2310144K), 2.1578777 secs] 19001.858: [CMS-concurrent-sweep-start] 19002.043: [GC 19002.043: [ParNew: 318998K->28072K(344064K), 0.1886607 secs] 1926098K->1635173K(2310144K), 0.1888124 secs] 19009.800: [CMS-concurrent-sweep: 7.751/7.942 secs] 19009.800: [CMS-concurrent-reset-start] 19010.051: [CMS-concurrent-reset: 0.250/0.250 secs] 19015.384: [GC 19015.384: [ParNew: 322984K->30317K(344064K), 0.2178368 secs] 1496676K->1207838K(2310144K), 0.2179773 secs] 19025.841: [GC 19025.842: [ParNew: 325229K->27691K(344064K), 0.2313683 secs] 1502750K->1213013K(2310144K), 0.2315669 secs] .... Laptop: 12436.567: [GC 12436.567: [ParNew: 322821K->28170K(344064K), 0.4482710 secs] 1820614K->1532726K(2310144K), 0.4483510 secs] 12438.456: [GC 12438.456: [ParNew: 323082K->27352K(344064K), 0.3058890 secs] 1827638K->1537746K(2310144K), 0.3059690 secs] 12440.072: [GC 12440.072: [ParNew: 322264K->22917K(344064K), 0.2582750 secs] 1832658K->1543612K(2310144K), 0.2583510 secs] 12441.594: [GC 12441.594: [ParNew: 317829K->31252K(344064K), 0.2623760 secs] 1838524K->1551947K(2310144K), 0.2624510 secs] 12443.136: [GC 12443.137: [ParNew: 326164K->49152K(344064K), 0.5364920 secs] 1846859K->1594211K(2310144K), 0.5365690 secs] 12443.694: [GC [1 CMS-initial-mark: 1545059K(1966080K)] 1597435K(2310144K), 0.2112670 secs] 12443.905: [CMS-concurrent-mark-start] 12445.287: [GC 12445.287: [ParNew: 344063K->12141K(344064K), 0.5005420 secs] 1889123K->1604975K(2310144K), 0.5006200 secs] 12447.348: [GC 12447.348: [ParNew: 307053K->21747K(344064K), 0.2396110 secs] 1899887K->1614581K(2310144K), 0.2396900 secs] 12449.061: [GC 12449.061: [ParNew: 316659K->29249K(344064K), 0.2359550 secs] 1909493K->1622083K(2310144K), 0.2360330 secs] 12450.740: [GC 12450.740: [ParNew: 324161K->30724K(344064K), 0.3210140 secs] 1916995K->1631546K(2310144K), 0.3210850 secs] 12452.539: [GC 12452.539: [ParNew: 325636K->28577K(344064K), 0.3849060 secs] 1926458K->1639437K(2310144K), 0.3849890 secs] 12454.548: [GC 12454.548: [ParNew: 323489K->30308K(344064K), 0.3750850 secs] 1934349K->1650841K(2310144K), 0.3751660 secs] 12455.880: [CMS-concurrent-mark: 9.839/11.975 secs] 12455.880: [CMS-concurrent-preclean-start] 12457.341: [CMS-concurrent-preclean: 1.200/1.461 secs] 12457.363: [GC12457.363: [Rescan (parallel) , 1.9972650 secs]12459.360: [weak refs processing, 0.1239550 secs] [1 CMS-remark: 1620532K(1966080K)] 1941855K(2310144K), 2.1214010 secs] 12459.499: [CMS-concurrent-sweep-start] 12459.509: [GC 12459.509: [ParNew: 325220K->44523K(344064K), 0.4837280 secs] 1945752K->1673386K(2310144K), 0.4838110 secs] 12461.460: [CMS-concurrent-sweep: 1.455/1.961 secs] 12461.461: [CMS-concurrent-reset-start] 12461.496: [CMS-concurrent-reset: 0.036/0.036 secs] 12462.802: [GC 12462.802: [ParNew: 339435K->49152K(344064K), 0.6503040 secs] 1936692K->1669076K(2310144K), 0.6503840 secs] _______________________________________________ hotspot-gc-use mailing list hotspot-gc-use(a)openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-use

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