promotion failed

Ken--@newsgroupstats.hk dragonken at gmail.com
Fri Jul 18 09:43:48 PDT 2008


Hi Jon,

uptime is 346136 (96 hours)

first Big GC occur at 227781 second (63th hour)

2nd Big GC occur at 311815 second (86th hour)

Total count of promotion failed = 2

Regards,
Ken



Jon Masamitsu wrote:
> 
> 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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