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Posted to dev@geode.apache.org by "Jared Stewart (JIRA)" <ji...@apache.org> on 2017/05/11 16:55:04 UTC
[jira] [Resolved] (GEODE-2883) gfsh gc reports incorrect heap sizes
[ https://issues.apache.org/jira/browse/GEODE-2883?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jared Stewart resolved GEODE-2883.
----------------------------------
Resolution: Fixed
> gfsh gc reports incorrect heap sizes
> ------------------------------------
>
> Key: GEODE-2883
> URL: https://issues.apache.org/jira/browse/GEODE-2883
> Project: Geode
> Issue Type: Bug
> Components: gfsh
> Affects Versions: 1.0.0-incubating, 1.1.0, 1.1.1
> Reporter: Barry Oglesby
> Assignee: Jared Stewart
> Fix For: 1.2.0
>
>
> I have 3 servers each with -Xms1g and -Xmx1g, and I load some data.
> If I run a gfsh gc, it reports:
> {noformat}
> GC Summary
> Member ID/Name | HeapSize (MB) Before GC | HeapSize(MB) After GC | Time Taken for GC in ms
> --------------------------- | ----------------------- | --------------------- | -----------------------
> 192.168.2.7(98588)<v7>:1025 | 2078 | 1098 | 516
> 192.168.2.7(98602)<v9>:1027 | 1942 | 1110 | 530
> 192.168.2.7(98595)<v8>:1026 | 2019 | 1109 | 531
> {noformat}
> The heap sizes before and after are higher than they should be.
> I added some debugging in the GarbageCollectionFunction, and it shows:
> {noformat}
> GarbageCollectionFunction.execute freeMemoryBeforeGC=765581248; totalMemoryBeforeGC=1037959168
> GarbageCollectionFunction.execute freeMemoryAfterGC=893946464; totalMemoryAfterGC=1037959168
> GarbageCollectionFunction.execute HeapSizeBeforeGC=2078
> GarbageCollectionFunction.execute HeapSizeAfterGC=1098
> GarbageCollectionFunction.execute freeMemoryBeforeGC=773307528; totalMemoryBeforeGC=1037959168
> GarbageCollectionFunction.execute freeMemoryAfterGC=892508088; totalMemoryAfterGC=1037959168
> GarbageCollectionFunction.execute HeapSizeBeforeGC=2019
> GarbageCollectionFunction.execute HeapSizeAfterGC=1109
> GarbageCollectionFunction.execute freeMemoryBeforeGC=783373464; totalMemoryBeforeGC=1037959168
> GarbageCollectionFunction.execute freeMemoryAfterGC=892349664; totalMemoryAfterGC=1037959168
> GarbageCollectionFunction.execute HeapSizeBeforeGC=1942
> GarbageCollectionFunction.execute HeapSizeAfterGC=1110
> {noformat}
> The free and total memory are fine, but the heap sizes before and after are incorrect.
> The function is using 131072 as its divisor
> {noformat}
> 1037959168-765581248=272377920 / 131072 = 2078
> 1037959168-893946464=144012704 / 131072 = 1098
> {noformat}
> It should be using 1024*1024.
> {noformat}
> 1037959168-765581248=272377920 / (1024*1024) = 259
> 1037959168-893946464=144012704 / (1024*1024) = 137
> {noformat}
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