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From Andrey Stepachev <oct...@gmail.com>
Subject Re: Java Commited Virtual Memory significally larged then Heap Memory
Date Tue, 11 Jan 2011 15:24:58 GMT
No. I don't use LZO. I tried even remove any native support (i.e. all .so
from class path)
and use java gzip. But nothing.


2011/1/11 Friso van Vollenhoven <fvanvollenhoven@xebia.com>

> Are you using LZO by any chance? If so, which version?
>
> Friso
>
>
> On 11 jan 2011, at 15:57, Andrey Stepachev wrote:
>
> > After starting the hbase in jroĐükit found the same memory leakage.
> >
> > After the launch
> >
> > Every 2,0 s: date & & ps - sort =- rss-eopid, rss, vsz, pcpu | head
> > Tue Jan 11 16:49:31 2011
> >
> >   11 16:49:31 MSK 2011
> >   PID RSS VSZ% CPU
> >  7863 2547760 5576744 78.7
> >
> >
> >
> > JR dumps:
> >
> > Total mapped 5576740KB (reserved = 2676404KB) - Java heap 2048000KB
> > (reserved = 1472176KB) - GC tables 68512KB - Thread stacks 37236KB (#
> > threads = 111) - Compiled code 1048576KB (used = 2599KB) - Internal
> > 1224KB - OS 549688KB - Other 1800976KB - Classblocks 1280KB (malloced
> > = 1110KB # 3285) - Java class data 20224KB (malloced = 20002KB # 15134
> > in 3285 classes) - Native memory tracking 1024KB (malloced = 325KB +10
> > KB # 20)
> >
> >
> >
> > After running the mr which make high write load (~1hour)
> >
> > Every 2,0 s: date & & ps - sort =- rss-eopid, rss, vsz, pcpu | head
> > Tue Jan 11 17:08:56 2011
> >
> >   11 17:08:56 MSK 2011
> >   PID RSS VSZ% CPU
> >  7863 4072396 5459572 100
> >
> >
> >
> > JR said not important below specify why)
> >
> > http://paste.ubuntu.com/552820/
> > <http://paste.ubuntu.com/552820/>
> >
> >
> > 7863:
> > Total mapped                  5742628KB +165888KB (reserved=1144000KB
> > -1532404KB)
> > -              Java heap      2048000KB           (reserved=0KB
> -1472176KB)
> > -              GC tables        68512KB
> > -          Thread stacks        38028KB    +792KB (#threads=114 +3)
> > -          Compiled code      1048576KB           (used=3376KB +776KB)
> > -               Internal         1480KB    +256KB
> > -                     OS       517944KB  -31744KB
> > -                  Other      1996792KB +195816KB
> > -            Classblocks         1280KB           (malloced=1156KB
> > +45KB #3421 +136)
> > -        Java class data        20992KB    +768KB (malloced=20843KB
> > +840KB #15774 +640 in 3421 classes)
> > - Native memory tracking         1024KB           (malloced=325KB +10KB
> #20)
> >
> >
> >
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >    OS                          *java    r x 0x0000000000400000.(
> 76KB)
> >    OS                          *java    rw  0x0000000000612000 (
>  4KB)
> >    OS                        *[heap]    rw  0x0000000000613000.(
> 478712KB)
> >   INT                           Poll    r   0x000000007fffe000 (
>  4KB)
> >   INT                         Membar    rw  0x000000007ffff000.(
>  4KB)
> >   MSP              Classblocks (1/2)    rw  0x0000000082ec0000 (
>  768KB)
> >   MSP              Classblocks (2/2)    rw  0x0000000082f80000 (
>  512KB)
> >  HEAP                      Java heap    rw
>  0x0000000083000000.(2048000KB)
> >                                         rw  0x00007f2574000000 (
>  65500KB)
> >                                             0x00007f2577ff7000.(
> 36KB)
> >                                         rw  0x00007f2584000000 (
>  65492KB)
> >                                             0x00007f2587ff5000.(
> 44KB)
> >                                         rw  0x00007f258c000000 (
>  65500KB)
> >                                             0x00007f258fff7000 (
> 36KB)
> >                                         rw  0x00007f2590000000 (
>  65500KB)
> >                                             0x00007f2593ff7000 (
> 36KB)
> >                                         rw  0x00007f2594000000 (
>  65500KB)
> >                                             0x00007f2597ff7000 (
> 36KB)
> >                                         rw  0x00007f2598000000 (
> 131036KB)
> >                                             0x00007f259fff7000 (
> 36KB)
> >                                         rw  0x00007f25a0000000 (
>  65528KB)
> >                                             0x00007f25a3ffe000 (
>  8KB)
> >                                         rw  0x00007f25a4000000 (
>  65496KB)
> >                                             0x00007f25a7ff6000 (
> 40KB)
> >                                         rw  0x00007f25a8000000 (
>  65496KB)
> >                                             0x00007f25abff6000 (
> 40KB)
> >                                         rw  0x00007f25ac000000 (
>  65504KB)
> >
> >
> >
> > So, the difference was in the pieces of memory like this:
> >
> > rw 0x00007f2590000000 (65500KB)
> >     0x00007f2593ff7000 (36KB)
> >
> >
> > Looks like HLog allocates memory (looks like HLog, becase it is very
> similar
> > size)
> >
> > If we count this blocks we get amount of lost memory:
> >
> > 65M * 32 + 132M = 2212M
> >
> > So, it looks like HLog allcates to many memory, and question is: how to
> > restrict it?
> >
> > 2010/12/30 Andrey Stepachev <octo47@gmail.com>
> >
> >> Hi All.
> >>
> >> After heavy load into hbase (single node, nondistributed test system) I
> got
> >> 4Gb process size of my HBase java process.
> >> On 6GB machine there was no room for anything else (disk cache and so
> on).
> >>
> >> Does anybody knows, what is going on, and how you solve this. What heap
> >> memory is set on you hosts
> >> and how much of RSS hbase process actually use.
> >>
> >> I don't see such things before, all tomcat and other java apps don't
> eats
> >> significally more memory then -Xmx.
> >>
> >> Connection name:   pid: 23476 org.apache.hadoop.hbase.master.HMaster
> >> start   Virtual Machine:   Java HotSpot(TM) 64-Bit Server VM version
> >> 17.1-b03   Vendor:   Sun Microsystems Inc.   Name:   23476@mars
>  Uptime:   12
> >> hours 4 minutes   Process CPU time:   5 hours 45 minutes   JIT compiler:
>   HotSpot
> >> 64-Bit Server Compiler   Total compile time:   19,223 seconds
> >> ------------------------------
> >>    Current heap size:     703 903 kbytes   Maximum heap size:   2 030
> 976kbytes    Committed memory:
> >> 2 030 976 kbytes   Pending finalization:   0 objects      Garbage
> >> collector:   Name = 'ParNew', Collections = 9 990, Total time spent = 5
> >> minutes   Garbage collector:   Name = 'ConcurrentMarkSweep', Collections
> =
> >> 20, Total time spent = 35,754 seconds
> >> ------------------------------
> >>    Operating System:   Linux 2.6.34.7-0.5-xen   Architecture:   amd64
>  Number of processors:
> >> 8   Committed virtual memory:   4 403 512 kbytes     Total physical
> >> memory:   6 815 744 kbytes   Free physical memory:      82 720 kbytes
>  Total swap space:
> >> 8 393 924 kbytes   Free swap space:   8 050 880 kbytes
> >>
> >>
> >>
> >>
>
>

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