promotion failed

Jon Masamitsu Jon.Masamitsu at Sun.COM
Fri Jul 18 08:20:00 PDT 2008


Ken,

How often do your promotion failures occur?

Jon

Ken-- at newsgroupstats.hk wrote On 07/18/08 05:21,:

>Dear All,
>
>please advise any more tuning for avoiding promotion failed
>
>VM Options:
>"C:\Program Files\Java\jdk1.6.0_04\bin\java" -server -verbose:gc
>-XX:+PrintGCDetails -Xloggc:gc.log -showversion -Xms4G -Xmx4G
>-XX:NewSize=512M -XX:PermSize=64M -XX:MaxPermSize=64M
>-XX:+CMSClassUnloadingEnabled -XX:+DisableExplicitGC -XX:+UseConcMarkSweepGC
>-XX:+UseParNewGC -XX:SurvivorRatio=6 -XX:CMSInitiatingOccupancyFraction=70
>-XX:TargetSurvivorRatio=90 -XX:+HandlePromotionFailure
>-Dcom.sun.management.jmxremote.port=7191
>-Dcom.sun.management.jmxremote.authenticate=false
>-Dcom.sun.management.jmxremote.ssl=false
>
>GC Log:
>227734.958: [GC 227734.958: [ParNew: 458751K->65536K(458752K), 0.4883967
>secs] 2975829K->2611470K(4128768K), 0.4885529 secs] [Times: user=1.42
>sys=0.20, real=0.48 secs] 
>227781.363: [GC 227781.363: [ParNew (promotion failed):
>458752K->458751K(458752K), 1.1739277 secs]
>227782.544: [CMS: 2566464K->903491K(3670016K), 14.2218888 secs]
>3004686K->903491K(4128768K), 15.4022930 secs] [Times: user=16.16 sys=0.70,
>real=15.39 secs] 
>227796.767: [GC [1 CMS-initial-mark: 903491K(3670016K)] 910269K(4128768K),
>0.0014926 secs] [Times: user=0.02 sys=0.00, real=0.00 secs] 
>227796.769: [CMS-concurrent-mark-start]
>227799.448: [GC 227799.449: [ParNew: 393216K->21851K(458752K), 0.0851390
>secs] 1296707K->925343K(4128768K), 0.0853620 secs] [Times: user=0.86
>sys=0.00, real=0.09 secs] 
>227799.536: [CMS-concurrent-mark: 2.670/2.767 secs] [Times: user=9.72
>sys=0.03, real=2.77 secs] 
>227799.536: [CMS-concurrent-preclean-start]
>227800.624: [GC 227800.624: [ParNew: 415067K->11565K(458752K), 0.0345770
>secs] 1318559K->915056K(4128768K), 0.0347455 secs] [Times: user=0.27
>sys=0.06, real=0.05 secs] 
>227800.684: [CMS-concurrent-preclean: 0.995/1.148 secs] [Times: user=4.38
>sys=0.23, real=1.14 secs] 
>227800.684: [CMS-concurrent-abortable-preclean-start]
>227801.270: [CMS-concurrent-abortable-preclean: 0.475/0.587 secs] [Times:
>user=2.22 sys=0.09, real=0.59 secs] 
>227801.273: [GC[YG occupancy: 240407 K (458752 K)]227801.273: [Rescan
>(parallel) , 0.0092978 secs]227801.282: [weak refs processing, 0.0002179
>secs]227801.283: [class unloading, 0.0082907 secs]227801.291: [scrub symbol
>& string tables, 0.0066056 secs] [1 CMS-remark: 903491K(3670016K)]
>1143898K(4128768K), 0.0275619 secs] [Times: user=0.03 sys=0.00, real=0.03
>secs] 
>227801.302: [CMS-concurrent-sweep-start]
>227803.075: [CMS-concurrent-sweep: 1.773/1.773 secs] [Times: user=4.19
>sys=0.03, real=1.77 secs] 
>227803.075: [CMS-concurrent-reset-start]
>227803.103: [CMS-concurrent-reset: 0.028/0.028 secs] [Times: user=0.06
>sys=0.00, real=0.03 secs] 
>227816.785: [GC 227816.786: [ParNew: 404776K->25694K(458752K), 0.2086003
>secs] 1188297K->809215K(4128768K), 0.2087517 secs] [Times: user=1.13
>sys=0.19, real=0.20 secs] 
>
>Regards,
>Ken
>
>
>
>  
>




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