for ensure after GC , there will print StatusLogger, I found this code in
GCInspector.java:
if (durationPerCollection MIN_DURATION_TPSTATS)
StatusLogger.log();
the defaultMIN_DURATION_TPSTATS=1second. so if GC duration more than 1s, there
will be StatusLogger!
But I check StatusLogger, I could’t figure out what happen inside in C at that
moment.
which status msg should I care on StatusLogger’s print msg??
Does Pending count important? or should I care aboutMemtable ops,data
qihuang.zheng
原始邮件
发件人:qihuang.zhengqihuang.zh...@fraudmetrix.cn
收件人:useru...@cassandra.apache.org
发送时间:2015年10月25日(周日) 15:27
主题:回复：StatusLogger output help
I just want to know when StatusLogger will happen, find this question:
http://qnalist.com/questions/4783598/help-on-statuslogger-output
but no one reply it. seems this question ask Mar 2014. no one notice then. I
just pull it out, hope someone answer this.
TKS.
qihuang.zheng
原始邮件
发件人:qihuang.zhengqihuang.zh...@fraudmetrix.cn
收件人:useru...@cassandra.apache.org
发送时间:2015年10月25日(周日) 15:19
主题:StatusLogger output help
After dig system.log. I notice Every GC for ParNew or GC for CMS will produce
StatusLogger.
But I’m not really sure is GC cause it. Is anyone summary this appearance?
INFO [ScheduledTasks:1] 2015-10-21 20:57:54,568 GCInspector.java (line 116) GC
for ParNew: 1165 ms for 1 collections, 8289178440 used; max is 16750411776
INFO [ScheduledTasks:1] 2015-10-21 20:57:54,621 StatusLogger.java (line 55)
Pool Name Active Pending Completed Blocked All Time Blocked
INFO [ScheduledTasks:1] 2015-10-21 20:57:54,622 StatusLogger.java (line 70)
ReadStage 5 21 613058 0 0
….
INFO [ScheduledTasks:1] 2015-10-21 21:03:19,142 GCInspector.java (line 116) GC
for ParNew: 267 ms for 1 collections, 9969463696 used; max is 16750411776
INFO [ScheduledTasks:1] 2015-10-21 21:03:56,802 GCInspector.java (line 116) GC
for ParNew: 1549 ms for 1 collections, 10679738240 used; max is 16750411776
INFO [ScheduledTasks:1] 2015-10-21 21:03:56,803 StatusLogger.java (line 55)
Pool Name Active Pending Completed Blocked All Time Blocked
INFO [ScheduledTasks:1] 2015-10-21 21:03:56,804 StatusLogger.java (line 70)
ReadStage 3 9 628954 0 0
….
INFO [ScheduledTasks:1] 2015-10-21 21:09:42,724 GCInspector.java (line 116) GC
for ParNew: 1420 ms for 1 collections, 5274947408 used; max is 16750411776
INFO [ScheduledTasks:1] 2015-10-21 21:09:42,725 StatusLogger.java (line 55)
Pool Name Active Pending Completed Blocked All Time Blocked
INFO [ScheduledTasks:1] 2015-10-21 21:09:42,725 StatusLogger.java (line 70)
ReadStage 7 7 644911 0 0
qihuang.zheng
