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Thread: ZCS 7.1.3 consumed a lot of memory (all system memory)

  1. #1
    soba@ukw.edu.pl is offline Special Member
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    Default ZCS 7.1.3 consumed a lot of memory (all system memory)

    Hi i use ZCS 7.1.3 with SLES 11 SP1.

    After a period of 21 days, the system is busy the entire RAM – 60 GB

    I add new 60 GB to VMWare. Now I have 120 GB RAM.
    After a period of 40 days ZCS consumed all of 120 GB RAM and use SWAP space!


    Memory is not released in the system. Does anyone have a similar problem?
    # ZCS 7.1.3 SLES11 SP1

  2. #2
    xeon is offline Advanced Member
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    Have you checked what is consuming all the memory? My best guess would be Java.

    PS: If you have a program or server consuming all the memory all of a sudden, its usually not a case of throw more memory/money at it. Logs and stats are your best friends with these sorts of issues.

  3. #3
    soba@ukw.edu.pl is offline Special Member
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    Yes - this is probably java problem, but when I shut down the ZCS application, my SLES doesn't refreash usage memory. I still have all memory in use...
    # ZCS 7.1.3 SLES11 SP1

  4. #4
    soba@ukw.edu.pl is offline Special Member
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    mem status after 7 days system uptime (300 users in ZCS)

    MemTotal: 57707776 kB
    MemFree: 1161040 kB
    Buffers: 477664 kB
    Cached: 47110188 kB
    SwapCached: 504 kB
    Active: 36781656 kB
    Inactive: 17229448 kB
    Active(anon): 6115344 kB
    Inactive(anon): 290320 kB
    Active(file): 30666312 kB
    Inactive(file): 16939128 kB
    Unevictable: 0 kB
    Mlocked: 0 kB
    SwapTotal: 16779884 kB
    SwapFree: 16773912 kB
    Dirty: 608 kB
    Writeback: 0 kB
    AnonPages: 6404936 kB
    Mapped: 56916 kB
    Shmem: 232 kB
    Slab: 2361160 kB
    SReclaimable: 1400868 kB
    SUnreclaim: 960292 kB
    KernelStack: 6744 kB
    PageTables: 20548 kB
    NFS_Unstable: 0 kB
    Bounce: 0 kB
    WritebackTmp: 0 kB
    CommitLimit: 45633772 kB
    Committed_AS: 23259240 kB
    VmallocTotal: 34359738367 kB
    VmallocUsed: 399332 kB
    VmallocChunk: 34359331715 kB
    HardwareCorrupted: 0 kB
    HugePages_Total: 0
    HugePages_Free: 0
    HugePages_Rsvd: 0
    HugePages_Surp: 0
    Hugepagesize: 2048 kB
    DirectMap4k: 10240 kB
    DirectMap2M: 58710016 kB


    vmstat output:
    procs -----------memory---------- ---swap-- -----io---- -system-- -----cpu------
    r b swpd free buff cache si so bi bo in cs us sy id wa st
    0 0 5972 1164052 477668 48510696 0 0 1 24 2 0 1 0 98 1 0
    # ZCS 7.1.3 SLES11 SP1

  5. #5
    xeon is offline Advanced Member
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    Are you experiencing performance issues? Those values do not seem bad to me. Lots of cache and inactive memory, which is normal. The OS will manage the memory properly even when process have finished.

  6. #6
    ccelis5215 is offline Elite Member
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    Right with Xeon.

  7. #7
    soba@ukw.edu.pl is offline Special Member
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    Hi - about cached memory - this is a LVM (disc) problem.
    # ZCS 7.1.3 SLES11 SP1

  8. #8
    ccelis5215 is offline Elite Member
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    A solved issue?

  9. #9
    soba@ukw.edu.pl is offline Special Member
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    I moved all /opt/zimbra data to normal (not LVM) reiserfs partition.


    We can also use flush memory cached procedure.
    # ZCS 7.1.3 SLES11 SP1

  10. #10
    ccelis5215 is offline Elite Member
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    and? you must tell what's happens.

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