November 2007 - hotspot-gc-dev

OOM error
by Anuj Lal 28 Nov '07

28 Nov '07

Jdk version 1.5.0_13 Exception in thread "CompilerThread1" java.lang.OutOfMemoryError: requested 32756 bytes for ChunkPool::allocate. Out of swap space? Java Result: 1 We are already setting -XX:ReservedCodeCacheSize=64M As per discussion in thread http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5075468 I am sure we have enough heap as well as swap space available. I am wondering above bug is fixed for 1.5.13? What is better option increasing -XX:ReservedCodeCacheSize or decreasing heap size so that we have more non heap memory available? Thanks ANuj Jvm parameter with -Xms2560m -Xmx2560m -XX:MaxPermSize=256M -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSParallelRemarkEnabled -XX:+UseCMSCompactAtFullCollection -XX:CMSFullGCsBeforeCompac tion=0 -XX:+HandlePromotionFailure -XX:CMSInitiatingOccupancyFraction=68 -XX:+UseCMSInitiatingOccupancyOnly - -XX:CMSMarkStackSize=32M XX:CodeCacheMinimumFreeSpace=2M -XX:ReservedCodeCacheSize=64M -XX:NewSize=512M -XX:MaxNewSize=51 2M -XX:MaxTenuringThreshold=6 -XX:SurvivorRatio=5 -XX:TargetSurvivorRatio= -XX:+CMSPermGenSweepingEnabled -XX:+CMSClassUnloadingEnabled -XX:CMSMaxAbortablePrecleanTime=1 wlstart: par new generation total 449408K, used 50959K [0x46400000, 0x66400000, 0x66400000) eden space 374528K, 0% used [0x46400000, 0x46400000, 0x5d1c0000) from space 74880K, 68% used [0x61ae0000, 0x64ca3ed0, 0x66400000) to space 74880K, 0% used [0x5d1c0000, 0x5d1c0000, 0x61ae0000) concurrent mark-sweep generation total 2097152K, used 1071568K [0x66400000, 0xe6400000, 0xe6400000) concurrent-mark-sweep perm gen total 211688K, used 127055K [0xe6400000, 0xf32ba000, 0xf6400000) } , 0.5049826 secs] Exception in thread "CompilerThread1" java.lang.OutOfMemoryError: requested 32756 bytes for ChunkPool::allocate. Out of swap space? Java Result: 1

4 7

RE: RE: OOM error
by Anuj Lal 28 Nov '07

28 Nov '07

Prstat indicate size is 3.718GB.. still les sthen 4gb limit I am assuming size include jvm heap+ perm space+ all native threads/sockets/fle descriptor/thread stack . Is that correct? anuj 7360 weblogic 3718M 2792M sleep 59 0 1:16:46 1.0% java/69 7360 weblogic 3718M 2792M sleep 55 0 0:04:50 1.0% java/36 7360 weblogic 3718M 2792M sleep 59 0 0:03:05 0.9% java/47 7360 weblogic 3718M 2792M sleep 39 0 1:03:54 0.7% java/60 7360 weblogic 3718M 2792M sleep 49 0 1:02:00 0.4% java/81 7360 weblogic 3718M 2792M sleep 49 0 0:03:54 0.4% java/40 7360 weblogic 3718M 2792M sleep 58 0 0:53:39 0.2% java/145 7360 weblogic 3718M 2792M sleep 59 0 1:29:27 0.2% java/7 7360 weblogic 3718M 2792M sleep 59 0 0:53:14 0.2% java/146 7360 weblogic 3718M 2792M sleep 59 0 0:26:26 0.1% java/147 7360 weblogic 3718M 2792M sleep 59 0 0:23:04 0.1% java/155 7360 weblogic 3718M 2792M sleep 59 0 0:16:34 0.0% java/5 7360 weblogic 3718M 2792M sleep 59 0 0:16:36 0.0% java/4 7360 weblogic 3718M 2792M sleep 59 0 0:16:34 0.0% java/3 7360 weblogic 3718M 2792M sleep 59 0 0:16:35 0.0% java/2 -----Original Message----- From: Anuj Lal Sent: Tuesday, November 27, 2007 4:30 PM To: Y Srinivas Ramakrishna Cc: Neo Jia; hotspot-gc-dev(a)openjdk.java.net Subject: RE: RE: OOM error Ramki This is pmap info when it is working correctly We had same issue on other server also. Its becoming p1 issue now. I"ll opem official sun case for this Anuj 20139: /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/bin/java -Xms2560m 00010000 64K r-x-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/bin/java 0002E000 16K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/bin/java 00032000 135328K rwx-- [ heap ] 24C00000 5904K r--s- dev:85,5 ino:169421 25380000 408K r-x-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libfontmana ger.so 253F4000 96K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libfontmana ger.so 25480000 24K rwx-R [ anon ] 25486000 488K rw--R [ anon ] 25580000 24K rwx-R [ anon ] 25586000 488K rw--R [ anon ] 25680000 24K ----R [ anon ] 25686000 488K rw--R [ anon ] 25780000 24K rwx-R [ anon ] 25786000 488K rw--R [ anon ] 25880000 24K rwx-R [ anon ] 25886000 488K rw--R [ anon ] 25980000 24K rwx-R [ anon ] 25986000 488K rw--R [ anon ] 25A80000 24K rwx-R [ anon ] 25A86000 488K rw--R [ anon ] 25B80000 24K rwx-R [ anon ] 25B86000 488K rw--R [ anon ] 25C80000 24K rwx-R [ anon ] 25C86000 488K rw--R [ anon ] 25D80000 24K ----R [ anon ] 25D86000 488K rw--R [ anon ] 25E80000 24K ----R [ anon ] 25E86000 488K rw--R [ anon ] 25F80000 24K ----R [ anon ] 25F86000 488K rw--R [ anon ] 26080000 24K ----R [ anon ] 26086000 488K rw--R [ anon ] 26180000 24K ----R [ anon ] 26186000 488K rw--R [ anon ] 26280000 24K ----R [ anon ] 26286000 488K rw--R [ anon ] 26380000 24K ----R [ anon ] 26386000 488K rw--R [ anon ] 26480000 24K ----R [ anon ] 26486000 488K rw--R [ anon ] 26580000 24K ----R [ anon ] 26586000 488K rw--R [ anon ] 26680000 24K ----R [ anon ] 26686000 488K rw--R [ anon ] 26780000 24K ----R [ anon ] 26786000 488K rw--R [ anon ] 26880000 24K ----R [ anon ] 26886000 488K rw--R [ anon ] 26980000 504K r--s- dev:85,5 ino:169364 26A80000 1424K r--s- dev:85,5 ino:169360 26C00000 24K ----R [ anon ] 26C06000 488K rw--R [ anon ] 26D00000 24K ----R [ anon ] 26D06000 488K rw--R [ anon ] 26E00000 24K ----R [ anon ] 26E06000 488K rw--R [ anon ] 26F00000 24K ----R [ anon ] 26F06000 488K rw--R [ anon ] 27000000 24K ----R [ anon ] 27006000 488K rw--R [ anon ] 27100000 1056K r-x-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libmlib_ima ge.so 27216000 8K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libmlib_ima ge.so 27280000 928K r-x-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libawt.so 27376000 40K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libawt.so 27380000 152K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libawt.so 27400000 4432K r--s- dev:85,5 ino:89133 27900000 24K ----R [ anon ] 27906000 488K rw--R [ anon ] 27A00000 24K ----R [ anon ] 27A06000 488K rw--R [ anon ] 27B00000 648K r--s- dev:85,5 ino:89132 27C00000 24K ----R [ anon ] 27C06000 488K rw--R [ anon ] 27D00000 24K ----R [ anon ] 27D06000 488K rw--R [ anon ] 27E00000 24K ----R [ anon ] 27E06000 488K rw--R [ anon ] 27F00000 24K ----R [ anon ] 27F06000 488K rw--R [ anon ] 28000000 24K ----R [ anon ] 28006000 488K rw--R [ anon ] 28100000 24K ----R [ anon ] 28106000 488K rw--R [ anon ] 28200000 24K ----R [ anon ] 28206000 488K rw--R [ anon ] 28300000 24K ----R [ anon ] 28306000 488K rw--R [ anon ] 28400000 24K ----R [ anon ] 28406000 488K rw--R [ anon ] 28500000 24K rwx-R [ anon ] 28506000 488K rw--R [ anon ] 28600000 24K ----R [ anon ] 28606000 488K rw--R [ anon ] 28700000 24K ----R [ anon ] 28706000 488K rw--R [ anon ] 28800000 24K ----R [ anon ] 28806000 488K rw--R [ anon ] 28900000 24K ----R [ anon ] 28906000 488K rw--R [ anon ] 28A00000 24K ----R [ anon ] 28A06000 488K rw--R [ anon ] 28B00000 24K ----R [ anon ] 28B06000 488K rw--R [ anon ] 28C00000 24K ----R [ anon ] 28C06000 488K rw--R [ anon ] 28D00000 24K ----R [ anon ] 28D06000 488K rw--R [ anon ] 28E00000 24K ----R [ anon ] 28E06000 488K rw--R [ anon ] 28F00000 24K ----R [ anon ] 28F06000 488K rw--R [ anon ] 29000000 24K ----R [ anon ] 29006000 488K rw--R [ anon ] 29100000 24K ----R [ anon ] 29106000 488K rw--R [ anon ] 29200000 24K ----R [ anon ] 29206000 488K rw--R [ anon ] 29300000 24K ----R [ anon ] 29306000 488K rw--R [ anon ] 29400000 24K ----R [ anon ] 29406000 488K rw--R [ anon ] 29500000 24K ----R [ anon ] 29506000 488K rw--R [ anon ] 29600000 24K ----R [ anon ] 29606000 488K rw--R [ anon ] 29700000 24K ----R [ anon ] 29706000 488K rw--R [ anon ] 29800000 24K ----R [ anon ] 29806000 488K rw--R [ anon ] 29900000 24K ----R [ anon ] 29906000 488K rw--R [ anon ] 29A00000 24K ----R [ anon ] 29A06000 488K rw--R [ anon ] 29B00000 24K ----R [ anon ] 29B06000 488K rw--R [ anon ] 29C00000 24K ----R [ anon ] 29C06000 488K rw--R [ anon ] 29D00000 24K ----R [ anon ] 29D06000 488K rw--R [ anon ] 29E00000 24K ----R [ anon ] 29E06000 488K rw--R [ anon ] 29F00000 24K ----R [ anon ] 29F06000 488K rw--R [ anon ] 2A000000 24K ----R [ anon ] 2A006000 488K rw--R [ anon ] 2A100000 24K ----R [ anon ] 2A106000 488K rw--R [ anon ] 2A200000 24K ----R [ anon ] 2A206000 488K rw--R [ anon ] 2A300000 24K ----R [ anon ] 2A306000 488K rw--R [ anon ] 2A400000 24K ----R [ anon ] 2A406000 488K rw--R [ anon ] 2A500000 24K ----R [ anon ] 2A506000 488K rw--R [ anon ] 2A600000 24K ----R [ anon ] 2A606000 488K rw--R [ anon ] 2A700000 24K ----R [ anon ] 2A706000 488K rw--R [ anon ] 2A800000 24K ----R [ anon ] 2A806000 488K rw--R [ anon ] 2A900000 24K ----R [ anon ] 2A906000 488K rw--R [ anon ] 2AA00000 24K ----R [ anon ] 2AA06000 488K rw--R [ anon ] 2AB00000 24K ----R [ anon ] 2AB06000 488K rw--R [ anon ] 2AC00000 24K ----R [ anon ] 2AC06000 488K rw--R [ anon ] 2AD00000 24K ----R [ anon ] 2AD06000 488K rw--R [ anon ] 2AE00000 24K ----R [ anon ] 2AE06000 488K rw--R [ anon ] 2AF00000 24K ----R [ anon ] 2AF06000 488K rw--R [ anon ] 2B000000 24K ----R [ anon ] 2B006000 488K rw--R [ anon ] 2B100000 24K ----R [ anon ] 2B106000 488K rw--R [ anon ] 2B200000 24K ----R [ anon ] 2B206000 488K rw--R [ anon ] 2B300000 24K ----R [ anon ] 2B306000 488K rw--R [ anon ] 2B400000 24K ----R [ anon ] 2B406000 488K rw--R [ anon ] 2B500000 24K ----R [ anon ] 2B506000 488K rw--R [ anon ] 2B600000 24K ----R [ anon ] 2B606000 488K rw--R [ anon ] 2B700000 24K ----R [ anon ] 2B706000 488K rw--R [ anon ] 2B800000 24K ----R [ anon ] 2B806000 488K rw--R [ anon ] 2B900000 24K ----R [ anon ] 2B906000 488K rw--R [ anon ] 2BA00000 24K ----R [ anon ] 2BA06000 488K rw--R [ anon ] 2BB00000 24K ----R [ anon ] 2BB06000 488K rw--R [ anon ] 2BC00000 24K ----R [ anon ] 2BC06000 488K rw--R [ anon ] 2BD00000 24K ----R [ anon ] 2BD06000 488K rw--R [ anon ] 2BE00000 24K ----R [ anon ] 2BE06000 488K rw--R [ anon ] 2BF00000 24K ----R [ anon ] 2BF06000 488K rw--R [ anon ] 2C000000 24K ----R [ anon ] 2C006000 488K rw--R [ anon ] 2C100000 24K ----R [ anon ] 2C106000 488K rw--R [ anon ] 2C200000 24K ----R [ anon ] 2C206000 488K rw--R [ anon ] 2C300000 24K ----R [ anon ] 2C306000 488K rw--R [ anon ] 2C400000 24K ----R [ anon ] 2C406000 488K rw--R [ anon ] 2C500000 24K ----R [ anon ] 2C506000 488K rw--R [ anon ] 2C600000 24K ----R [ anon ] 2C606000 488K rw--R [ anon ] 2C700000 24K ----R [ anon ] 2C706000 488K rw--R [ anon ] 2C800000 24K ----R [ anon ] 2C806000 488K rw--R [ anon ] 2C900000 24K ----R [ anon ] 2C906000 488K rw--R [ anon ] 2CA00000 24K ----R [ anon ] 2CA06000 488K rw--R [ anon ] 2CB00000 24K ----R [ anon ] 2CB06000 488K rw--R [ anon ] 2CC00000 24K ----R [ anon ] 2CC06000 488K rw--R [ anon ] 2CD00000 24K ----R [ anon ] 2CD06000 488K rw--R [ anon ] 2CE00000 24K ----R [ anon ] 2CE06000 488K rw--R [ anon ] 2CF00000 24K ----R [ anon ] 2CF06000 488K rw--R [ anon ] 2D000000 24K ----R [ anon ] 2D006000 488K rw--R [ anon ] 2D100000 24K ----R [ anon ] 2D106000 488K rw--R [ anon ] 2D200000 24K ----R [ anon ] 2D206000 488K rw--R [ anon ] 2D300000 24K ----R [ anon ] 2D306000 488K rw--R [ anon ] 2D400000 24K ----R [ anon ] 2D406000 488K rw--R [ anon ] 2D500000 24K ----R [ anon ] 2D506000 488K rw--R [ anon ] 2D600000 24K ----R [ anon ] 2D606000 488K rw--R [ anon ] 2D700000 24K ----R [ anon ] 2D706000 488K rw--R [ anon ] 2D800000 24K ----R [ anon ] 2D806000 488K rw--R [ anon ] 2D900000 24K ----R [ anon ] 2D906000 488K rw--R [ anon ] 2DA00000 24K ----R [ anon ] 2DA06000 488K rw--R [ anon ] 2DB00000 24K ----R [ anon ] 2DB06000 488K rw--R [ anon ] 2DC00000 24K ----R [ anon ] 2DC06000 488K rw--R [ anon ] 2DD00000 24K ----R [ anon ] 2DD06000 488K rw--R [ anon ] 2DE00000 24K ----R [ anon ] 2DE06000 488K rw--R [ anon ] 2DEB0000 176K r-x-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libjpeg.so 2DEEC000 8K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libjpeg.so 2DF00000 24K ----R [ anon ] 2DF06000 488K rw--R [ anon ] 2DFA0000 8K rwx-- [ anon ] 2DFB0000 96K r-x-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libdcpr.so 2DFD6000 80K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libdcpr.so 2E000000 24K ----R [ anon ] 2E006000 488K rw--R [ anon ] 2E090000 312K r--s- dev:85,5 ino:12797 2E0F0000 24K r--s- dev:85,5 ino:169374 2E100000 24K ----R [ anon ] 2E106000 488K rw--R [ anon ] 2E190000 32K r-x-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/headless/li bmawt.so 2E1A6000 8K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/headless/li bmawt.so 2E1B0000 8K rwx-- [ anon ] 2E1C0000 112K r--s- dev:85,5 ino:104786 2E1E0000 112K r--s- dev:85,5 ino:148909 2E200000 24K ----R [ anon ] 2E206000 488K rw--R [ anon ] 2E290000 24K r--s- dev:85,5 ino:104507 2E2A0000 32K r--s- dev:85,5 ino:90208 2E2B0000 64K r--s- dev:85,5 ino:103379 2E2D0000 32K r--s- dev:85,5 ino:90200 2E2E0000 56K r--s- dev:85,5 ino:90170 2E300000 24K ----R [ anon ] 2E306000 488K rw--R [ anon ] 2E390000 32K r--s- dev:85,5 ino:90131 2E3A0000 16K r--s- dev:85,5 ino:90152 2E3B0000 40K r--s- dev:85,5 ino:90192 2E3C0000 136K r-x-- /usr/lib/libelf.so.1 2E3F2000 8K rwx-- /usr/lib/libelf.so.1 2E400000 24K ----R [ anon ] 2E406000 488K rw--R [ anon ] 2E490000 48K r--s- dev:85,5 ino:90137 2E4A0000 248K r-x-- /usr/lib/libresolv.so.2 2E4EE000 16K rwx-- /usr/lib/libresolv.so.2 2E500000 1480K r--s- dev:85,5 ino:178161 2E680000 24K ----R [ anon ] 2E686000 488K rw--R [ anon ] 2E710000 56K r--s- dev:85,5 ino:90159 2E730000 16K rw--- [ anon ] 2E740000 40K r-x-- /usr/ucblib/libucb.so.1 2E75A000 8K rwx-- /usr/ucblib/libucb.so.1 2E760000 24K r-x-- /opt/p4/3rdparty/bea/weblogic/9.2mp1/server/native/solaris/sparc/libmuxe r.so 2E774000 8K rwx-- /opt/p4/3rdparty/bea/weblogic/9.2mp1/server/native/solaris/sparc/libmuxe r.so 2E780000 512K rw--R [ anon ] 2E810000 40K r--s- dev:85,5 ino:90183 2E820000 8K r-x-- /opt/p4/3rdparty/bea/weblogic/9.2mp1/server/native/solaris/sparc/libwlfi leio2.so 2E830000 16K rwx-- /opt/p4/3rdparty/bea/weblogic/9.2mp1/server/native/solaris/sparc/libwlfi leio2.so 2E840000 64K rw--- [ anon ] 2E860000 8K r-x-- /opt/p4/3rdparty/bea/weblogic/9.2mp1/server/native/solaris/sparc/libstac kdump.so 2E870000 8K rwx-- /opt/p4/3rdparty/bea/weblogic/9.2mp1/server/native/solaris/sparc/libstac kdump.so 2E880000 24K ----R [ anon ] 2E886000 488K rw--R [ anon ] 2E910000 48K r--s- dev:85,5 ino:90122 2E920000 8K r-x-- /usr/lib/libsendfile.so.1 2E932000 8K rwx-- /usr/lib/libsendfile.so.1 2E940000 8K r-x-- /usr/lib/libmd5.so.1 2E952000 8K rwx-- /usr/lib/libmd5.so.1 2E960000 40K r-x-- /usr/lib/libaio.so.1 2E97A000 8K rwx-- /usr/lib/libaio.so.1 2E980000 24K ----R [ anon ] 2E986000 488K rw--R [ anon ] 2EA10000 16K r--s- dev:85,5 ino:91540 2EA20000 24K r-x-- /usr/lib/librt.so.1 2EA36000 8K rwx-- /usr/lib/librt.so.1 2EA40000 200K r--s- dev:85,5 ino:178116 2EA80000 24K ----R [ anon ] 2EA86000 488K rw--R [ anon ] 2EB10000 32K rw--- [ anon ] 2EB20000 32K r-x-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libnio.so 2EB36000 8K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libnio.so 2EB40000 184K r--s- dev:85,5 ino:178351 2EB80000 2496K r--s- dev:85,5 ino:43427 2EE00000 784K r--s- dev:85,5 ino:8126 2EED0000 88K r--s- dev:85,5 ino:178142 2EEF0000 32K r--s- 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ino:7155 FDE40000 32K r--s- dev:85,5 ino:8274 FDE50000 120K r--s- dev:85,5 ino:8269 FDE80000 512K rw--R [ anon ] FDF10000 112K r--s- dev:85,5 ino:8271 FDF30000 96K r--s- dev:85,5 ino:26727 FDF50000 176K r--s- dev:85,5 ino:25470 FDF80000 536K r--s- dev:85,5 ino:25490 FE010000 88K r--s- dev:85,5 ino:26444 FE030000 160K r--s- dev:85,5 ino:25469 FE060000 24K r-x-- /usr/lib/nss_files.so.1 FE076000 8K rwx-- /usr/lib/nss_files.so.1 FE080000 504K r--s- dev:85,5 ino:24234 FE110000 72K r-x-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libnet.so FE130000 8K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libnet.so FE140000 24K r-x-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libmanageme nt.so FE154000 8K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libmanageme nt.so FE160000 112K rw--- [ anon ] FE180000 1312K r--s- dev:85,5 ino:26635 FE2D0000 16K r--s- dev:85,5 ino:20250 FE2E0000 88K r--s- dev:85,5 ino:25489 FE300000 1176K r--s- dev:85,5 ino:26633 FE430000 8K rwx-- [ anon ] FE440000 192K r--s- dev:85,5 ino:26634 FE480000 2528K r--s- dev:85,5 ino:26520 FE700000 16K r--s- dev:85,5 ino:8280 FE710000 192K r--s- dev:85,5 ino:26499 FE750000 64K r-x-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libzip.so FE760000 8K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libzip.so FE770000 8K rwx-- [ anon ] FE780000 144K r-x-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libjava.so FE7B4000 8K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libjava.so FE7C0000 56K r-x-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libverify.s o FE7DE000 8K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/libverify.s o FE7F0000 8K r--s- dev:85,5 ino:25467 FE800000 7984K r-x-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/server/libj vm.so FEFDC000 408K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/server/libj vm.so FF042000 56K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/server/libj vm.so FF060000 32K r-x-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/native_thre ads/libhpi.so FF078000 8K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/native_thre ads/libhpi.so FF07A000 8K rwx-- /opt/p4/3rdparty/sun/java/sunos-sparc/1.5.0_13/jre/lib/sparc/native_thre ads/libhpi.so FF080000 568K r-x-- /usr/lib/libnsl.so.1 FF11E000 40K rwx-- /usr/lib/libnsl.so.1 FF128000 24K rwx-- /usr/lib/libnsl.so.1 FF140000 32K rw-s- dev:0,2 ino:253268838 FF150000 8K rwx-- [ anon ] FF160000 8K r---- [ anon ] FF170000 16K rw--- [ anon ] FF180000 16K r-x-- /usr/lib/libmp.so.2 FF194000 8K rwx-- /usr/lib/libmp.so.2 FF1A0000 8K rwx-- [ anon ] FF1B0000 224K r-x-- /usr/lib/libm.so.1 FF1F6000 8K rwx-- /usr/lib/libm.so.1 FF200000 48K r-x-- /usr/lib/libCrun.so.1 FF21A000 8K rwx-- /usr/lib/libCrun.so.1 FF21C000 16K rwx-- /usr/lib/libCrun.so.1 FF230000 8K r-x-- /usr/lib/libsched.so.1 FF242000 8K rwx-- /usr/lib/libsched.so.1 FF250000 40K r-x-- /usr/lib/libsocket.so.1 FF26A000 8K rwx-- /usr/lib/libsocket.so.1 FF280000 688K r-x-- /usr/lib/libc.so.1 FF33C000 24K rwx-- /usr/lib/libc.so.1 FF342000 8K rwx-- /usr/lib/libc.so.1 FF350000 8K rwxs- [ anon ] FF360000 16K rw--- [ anon ] FF370000 8K rwx-- [ anon ] FF380000 96K r-x-- /usr/lib/libthread.so.1 FF3A8000 8K rwx-- /usr/lib/libthread.so.1 FF3AA000 8K rwx-- /usr/lib/libthread.so.1 FF3B0000 8K r-x-- /usr/platform/sun4u-us3/lib/libc_psr.so.1 FF3C0000 192K r-x-- /usr/lib/ld.so.1 FF3F0000 8K rwx-- /usr/lib/ld.so.1 FF3F2000 8K rwx-- /usr/lib/ld.so.1 FF3FA000 8K rwx-- /usr/lib/libdl.so.1 FFB7C000 24K ----- [ anon ] FF400000 8192K rw--- [ stack ] total 3636576K -----Original Message----- From: Y Srinivas Ramakrishna [mailto:Y.S.Ramakrishna@Sun.COM] Sent: Tuesday, November 27, 2007 3:26 PM To: Anuj Lal Cc: Neo Jia; hotspot-gc-dev(a)openjdk.java.net Subject: Re: RE: OOM error pmap -rs will tell you what's taking up address space. It could be, for example, that you have lots of threads (so the space is gone to thread stacks, so you might try -Xss<...> or it could be that you have loaded lots of native libraries that have taken up address space, or it could be that you have lots of file descriptors or sockets or mmapped files or other native resources that are tying up your address space). (the reference to "swap space" in the message is usuallysomewhat misleading; i think there are plans to fix that message to be smarter / less misleading). -- ramki > We are on solaris 9.0 32 bit > > We aleady have "low" jvm heap. We don't want to go below this. > > I am pretty sure we are not running out of swap space > > > > This is what we have currently > > 8 processes: 46 sleeping, 2 on cpu > > CPU states: 95.2% idle, 3.9% user, 0.8% kernel, 0.0% iowait, 0.0% > swap > > Memory: 16G real, 12G free, 3510M swap in use, 18G swap free > > > > PID USERNAME THR PRI NICE SIZE RES STATE TIME CPU COMMAND > > 20139 weblogic 144 19 0 3389M 2362M cpu/2 87:19 5.16% java > > > > Anuj > > > > > > > > > > -----Original Message----- > From: Y Srinivas Ramakrishna [mailto:Y.S.Ramakrishna@Sun.COM] > Sent: Tuesday, November 27, 2007 3:10 PM > To: Neo Jia > Cc: Anuj Lal; hotspot-gc-dev(a)openjdk.java.net > Subject: Re: OOM error > > > > > > > > > > Hi Anuj -- > > > > > > Exception in thread "CompilerThread1" java.lang.OutOfMemoryError: > requested > > > > 32756 bytes for ChunkPool::allocate. Out of swap space? > > > > This is a request for 32 KB (not 32 MB as in the bug you quoted below). > > > > You should probably check pmap -rs on the process. You are almost > certainly out of > > C heap space (so, as you suggested below, reducing the Java heap might > help by > > freeing up your apparently scarce 32-bit virtual address space to the > c-heap). > > I note, though, that you have a rather modest (~2.6 GB?) heap, so on > Solaris > > for example, i'd expect plenty of free address space in the sbrk > segment. What > > platform are you on? > > > > -- ramki. > > > > > > We are already setting > > > > > > > > -XX:ReservedCodeCacheSize=64M > > > > > > > > > > > > > > > > As per discussion in thread > > > > > > > > http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5075468 > > > > > > > > > > > > > > > > I am sure we have enough heap as well as swap space available. > > > > > > > > > > > > > > > > I am wondering above bug is fixed for 1.5.13? > > > > > > > > What is better option increasing -XX:ReservedCodeCacheSize or > decreasing > > > > heap size so that we have more non heap memory available? > > > > > > > > > > > > > > > > Thanks > > > > > > > > ANuj > > > > > > > > > > > > > > > > > > > > > > > > Jvm parameter > > > > > > > > with -Xms2560m -Xmx2560m -XX:MaxPermSize=256M > > > > > > > > -XX:+UseConcMarkSweepGC > > > > > > > > -XX:+UseParNewGC > > > > > > > > -XX:+CMSParallelRemarkEnabled > > > > > > > > -XX:+UseCMSCompactAtFullCollection > > > > > > > > -XX:CMSFullGCsBeforeCompac > > > > > > > > tion=0 -XX:+HandlePromotionFailure > > > > > > > > -XX:CMSInitiatingOccupancyFraction=68 > > > > > > > > -XX:+UseCMSInitiatingOccupancyOnly - > > > > > > > > -XX:CMSMarkStackSize=32M > > > > > > > > XX:CodeCacheMinimumFreeSpace=2M > > > > > > > > -XX:ReservedCodeCacheSize=64M > > > > > > > > -XX:NewSize=512M -XX:MaxNewSize=51 > > > > > > > > 2M -XX:MaxTenuringThreshold=6 -XX:SurvivorRatio=5 > -XX:TargetSurvivorRatio= > > > > > > > > -XX:+CMSPermGenSweepingEnabled -XX:+CMSClassUnloadingEnabled > > > > -XX:CMSMaxAbortablePrecleanTime=1 > > > > > > > > > > > > > > > > > > > > > > > > wlstart: > > > > > > > > par new generation total 449408K, used 50959K [0x46400000, > 0x66400000, > > > > 0x66400000) > > > > > > > > eden space 374528K, 0% used [0x46400000, 0x46400000, 0x5d1c0000) > > > > > > > > from space 74880K, 68% used [0x61ae0000, 0x64ca3ed0, 0x66400000) > > > > > > > > to space 74880K, 0% used [0x5d1c0000, 0x5d1c0000, 0x61ae0000) > > > > > > > > concurrent mark-sweep generation total 2097152K, used 1071568K > [0x66400000, > > > > 0xe6400000, 0xe6400000) > > > > > > > > concurrent-mark-sweep perm gen total 211688K, used 127055K > [0xe6400000, > > > > 0xf32ba000, 0xf6400000) > > > > > > > > } > > > > > > > > , 0.5049826 secs] > > > > > > > > > > > > > > > > Exception in thread "CompilerThread1" java.lang.OutOfMemoryError: > requested > > > > 32756 bytes for ChunkPool::allocate. Out of swap space? > > > > > > > > Java Result: 1 > > > > > > > > > > > > -- > > > I would remember that if researchers were not ambitious > > > probably today we haven't the technology we are using! >

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Proposal for finalizer optimization.
by Ramón García 27 Nov '07

27 Nov '07

I am thinking about optimizing the implementation of finalizing. At present, finalizing imposes a high overhead to garbage collection. If an object has a finalizer, it must be collected twice, in case the finalizer creates a reference to the object somewhere. In the vast majority of cases this does not happen. The optimization would detect that the finalizer cannot create such references , and would mark the finalizer to run exactly before the memory of the object is released. What would be the best place to insert this optimization? Any other ideas?

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continuous cms gc. even though it is not hitting CMSInitiatingOccupancyFraction=68 Is thsi a know issue
by Anuj Lal 26 Nov '07

26 Nov '07

We just moved to 1.5.0.13 from 1.4.12. It sin production. I am opening sun support case too. -Xms2460m -server -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSParallelRemarkEnabled -XX:+UseCMSCompactAtFullCollection -XX:CMSFullGCsBeforeCompaction=0 -XX:+HandlePromotionFailure -XX:CMSInitiatingOccupancyFraction=68 -XX:+UseCMSInitiatingOccupancyOnly -Xmx2460m -XX:NewSize=462M -XX:MaxNewSize=462M -XX:MaxTenuringThreshold=5 -XX:SurvivorRatio=5 -XX:TargetSurvivorRatio=80 -XX:PermSize=256M -XX:MaxPermSize=256M -XX:-DisableExplicitGC -XX:+CMSPermGenSweepingEnabled -XX:+CMSClassUnloadingEnabled -XX:CMSMaxAbortablePrecleanTime=1 Here I sthe snippet of log. See used is only used 599703K an jvm keep doing cms gc Anuj concurrent mark-sweep generation total 2045952K, used 599703K [0x6b600000, 0xe8400000, 0xe8400000) concurrent-mark-sweep perm gen total 262144K, used 182700K [0xe8400000, 0xf8400000, 0xf8400000) 474868.841: [ParNew Desired survivor size 55364812 bytes, new threshold 5 (max 5) - age 1: 11103424 bytes, 11103424 total - age 2: 4182448 bytes, 15285872 total - age 3: 6066672 bytes, 21352544 total - age 4: 7075376 bytes, 28427920 total : 363413K->27933K(405504K), 0.1678588 secs] 963116K->627636K(2451456K)Heap after gc invocations=22744: par new generation total 405504K, used 27933K [0x4e800000, 0x6b600000, 0x6b600000) eden space 337920K, 0% used [0x4e800000, 0x4e800000, 0x63200000) from space 67584K, 41% used [0x67400000, 0x68f47550, 0x6b600000) to space 67584K, 0% used [0x63200000, 0x63200000, 0x67400000) concurrent mark-sweep generation total 2045952K, used 599703K [0x6b600000, 0xe8400000, 0xe8400000) concurrent-mark-sweep perm gen total 262144K, used 182700K [0xe8400000, 0xf8400000, 0xf8400000) } , 0.1688079 secs] 474869.011: [GC [1 CMS-initial-mark: 599703K(2045952K)] 628140K(2451456K), 0.1199002 secs] 474869.132: [CMS-concurrent-mark-start] 474876.273: [CMS-concurrent-mark: 7.004/7.141 secs] 474876.273: [CMS-concurrent-preclean-start] 474876.344: [CMS-concurrent-preclean: 0.069/0.071 secs] 474876.344: [CMS-concurrent-abortable-preclean-start] CMS: abort preclean due to time 474877.846: [CMS-concurrent-abortable-preclean: 1.006/1.502 secs] 474877.854: [GC[YG occupancy: 211030 K (405504 K)]474877.854: [Rescan (parallel) , 0.6154592 secs]474878.470: [weak refs processing, 0.3838744 secs]474878.854: [class unloading, 0.1124973 secs]474878.966: [scrub symbol & string tables, 0.0976109 secs] [1 CMS-remar k: 599703K(2045952K)] 810733K(2451456K), 1.2858288 secs] 474879.150: [CMS-concurrent-sweep-start] 474882.602: [CMS-concurrent-sweep: 3.336/3.452 secs] 474882.602: [CMS-concurrent-reset-start] 474882.846: [CMS-concurrent-reset: 0.244/0.244 secs] 474882.985: [GC [1 CMS-initial-mark: 595574K(2045952K)] 897595K(2451456K), 1.2062837 secs] 474884.192: [CMS-concurrent-mark-start] 474889.371: [CMS-concurrent-mark: 5.179/5.179 secs] 474889.371: [CMS-concurrent-preclean-start] 474889.459: [CMS-concurrent-preclean: 0.084/0.088 secs] 474889.459: [CMS-concurrent-abortable-preclean-start] CMS: abort preclean due to time 474891.671: [CMS-concurrent-abortable-preclean: 1.004/2.212 secs] 474891.799: [GC[YG occupancy: 330467 K (405504 K)]474891.799: [Rescan (parallel) , 1.0003167 secs]474892.800: [weak refs processing, 0.4521800 secs]474893.252: [class unloading, 0.1199606 secs]474893.372: [scrub symbol & string tables, 0.1051379 secs] [1 CMS-remar k: 595574K(2045952K)] 926042K(2451456K), 1.7586947 secs] 474893.562: [CMS-concurrent-sweep-start] 474895.970: [CMS-concurrent-sweep: 2.408/2.408 secs] 474895.970: [CMS-concurrent-reset-start] 474896.187: [CMS-concurrent-reset: 0.217/0.217 secs] 474898.296: [GC [1 CMS-initial-mark: 594417K(2045952K)] 932649K(2451456K), 1.2541899 secs] 474899.551: [CMS-concurrent-mark-start] 474904.513: [CMS-concurrent-mark: 4.962/4.962 secs] 474904.513: [CMS-concurrent-preclean-start] 474904.584: [CMS-concurrent-preclean: 0.068/0.071 secs] 474904.584: [CMS-concurrent-abortable-preclean-start] CMS: abort preclean due to time 474906.523: [CMS-concurrent-abortable-preclean: 1.017/1.938 secs] 474906.549: [GC[YG occupancy: 346194 K (405504 K)]474906.549: [Rescan (parallel) , 1.0806458 secs]474907.630: [weak refs processing, 0.4560526 secs]474908.086: [class unloading, 0.1184826 secs]474908.205: [scrub symbol & string tables, 0.0981007 secs] [1 CMS-remar k: 594417K(2045952K)] 940611K(2451456K), 1.8293189 secs] 474908.379: [CMS-concurrent-sweep-start] 474910.636: [CMS-concurrent-sweep: 2.256/2.256 secs] 474910.636: [CMS-concurrent-reset-start] 474910.782: [CMS-concurrent-reset: 0.146/0.146 secs] 474912.320: [GC [1 CMS-initial-mark: 594402K(2045952K)] 949362K(2451456K), 1.2208158 secs] 474913.542: [CMS-concurrent-mark-start] 474914.002: [GC {Heap before gc invocations=22744: par new generation total 405504K, used 365853K [0x4e800000, 0x6b600000, 0x6b600000) eden space 337920K, 100% used [0x4e800000, 0x63200000, 0x63200000) from space 67584K, 41% used [0x67400000, 0x68f47550, 0x6b600000) to space 67584K, 0% used [0x63200000, 0x63200000, 0x67400000)

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Re: continuous cms gc. even though it is not hitting CMSInitiatingOccupancyFraction=68 Is thsi a know issue
by Peter B. Kessler 21 Nov '07

21 Nov '07

Anuj Lal wrote: > We just moved to 1.5.0.13 from 1.4.12. It sin production. > I am opening sun support case too. > > -Xms2460m –server > -XX:+UseConcMarkSweepGC > -XX:+UseParNewGC > -XX:+CMSParallelRemarkEnabled > -XX:+UseCMSCompactAtFullCollection > -XX:CMSFullGCsBeforeCompaction=0 > -XX:+HandlePromotionFailure > -XX:CMSInitiatingOccupancyFraction=68 > -XX:+UseCMSInitiatingOccupancyOnly > -Xmx2460m > -XX:NewSize=462M > -XX:MaxNewSize=462M > -XX:MaxTenuringThreshold=5 > -XX:SurvivorRatio=5 > -XX:TargetSurvivorRatio=80 > -XX:PermSize=256M > -XX:MaxPermSize=256M > -XX:-DisableExplicitGC > -XX:+CMSPermGenSweepingEnabled > -XX:+CMSClassUnloadingEnabled > -XX:CMSMaxAbortablePrecleanTime=1 > > > Here I sthe snippet of log. See used is only used 599703K an jvm keep doing cms gc > > Anuj > > .... How do people on hotspot-gc-dev(a)openjdk.java.net feel about our analyzing GC logs on this alias? I know the Sun people feel it would be useful for people interested enough to subscribe to this alias to see some of the logs we get, and our analysis of them. But I thought I'd ask. (E.g., this case is about 1.5.0, not OpenJDK, though the analysis might still be interesting.) What I'd like to do is set up a separate mailing list for OpenJDK GC log analysis (hotspot-gc-feedback(a)openjdk.java.net?) and have hotspot-gc-dev(a)openjdk.java.net on that list. That way if the traffic becomes too heavy, we could separate the lists and only the interested (or paid :-) people would have to see it. Does that seem reasonable? ... peter

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