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I use linux and unix and run aplication. How I can use command top , vmstat ,free ...etc existing command to find out there is memory leaking ??? Please give ...
  1. 09-13-2010 #1
    chuikingman
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    memory leaking

    I use linux and unix and run aplication.
    How I can use command top , vmstat ,free ...etc
    existing command to find out there is memory leaking ???
    Please give me example .
    It is not allow to use compiler to compile the program /tool.
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  2. 09-13-2010 #2
    ved
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    Welcome
    you have to put this comand in terminal as local user or root user and press enter see output
    [ved@localhost ~]$ free
    total used free shared buffers cached
    Mem: 443724 435876 7848 0 20724 149932
    -/+ buffers/cache: 265220 178504
    Swap: 2098168 39352 2058816
    [ved@localhost ~]$ free
    total used free shared buffers cached
    Mem: 443724 428236 15488 0 19140 135056
    -/+ buffers/cache: 274040 169684
    Swap: 2098168 42480 2055688
    [ved@localhost ~]$ cat /proc/meminfo
    MemTotal: 443724 kB
    MemFree: 14388 kB
    Buffers: 19300 kB
    Cached: 135544 kB
    SwapCached: 7076 kB
    Active: 171792 kB
    Inactive: 204676 kB
    Active(anon): 87140 kB
    Inactive(anon): 139932 kB
    Active(file): 84652 kB
    Inactive(file): 64744 kB
    Unevictable: 0 kB
    Mlocked: 0 kB
    HighTotal: 0 kB
    HighFree: 0 kB
    LowTotal: 443724 kB
    LowFree: 14388 kB
    SwapTotal: 2098168 kB
    SwapFree: 2055688 kB
    Dirty: 40 kB
    Writeback: 0 kB
    AnonPages: 215676 kB
    Mapped: 82244 kB
    Shmem: 5444 kB
    Slab: 28380 kB
    SReclaimable: 15676 kB
    SUnreclaim: 12704 kB
    KernelStack: 2208 kB
    PageTables: 9568 kB
    NFS_Unstable: 0 kB
    Bounce: 0 kB
    WritebackTmp: 0 kB
    CommitLimit: 2320028 kB
    Committed_AS: 1253224 kB
    VmallocTotal: 572472 kB
    VmallocUsed: 12508 kB
    VmallocChunk: 554084 kB
    HardwareCorrupted: 0 kB
    HugePages_Total: 0
    HugePages_Free: 0
    HugePages_Rsvd: 0
    HugePages_Surp: 0
    Hugepagesize: 2048 kB
    DirectMap4k: 13248 kB
    DirectMap2M: 444416 kB
    [ved@localhost ~]$
    or read this
    Linux memory leak?
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  3. 09-13-2010 #3
    chuikingman
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    Quote Originally Posted by ved View Post
    Welcome
    you have to put this comand in terminal as local user or root user and press enter see output
    [ved@localhost ~]$ free
    total used free shared buffers cached
    Mem: 443724 435876 7848 0 20724 149932
    -/+ buffers/cache: 265220 178504
    Swap: 2098168 39352 2058816
    [ved@localhost ~]$ free
    total used free shared buffers cached
    Mem: 443724 428236 15488 0 19140 135056
    -/+ buffers/cache: 274040 169684
    Swap: 2098168 42480 2055688
    [ved@localhost ~]$ cat /proc/meminfo
    MemTotal: 443724 kB
    MemFree: 14388 kB
    Buffers: 19300 kB
    Cached: 135544 kB
    SwapCached: 7076 kB
    Active: 171792 kB
    Inactive: 204676 kB
    Active(anon): 87140 kB
    Inactive(anon): 139932 kB
    Active(file): 84652 kB
    Inactive(file): 64744 kB
    Unevictable: 0 kB
    Mlocked: 0 kB
    HighTotal: 0 kB
    HighFree: 0 kB
    LowTotal: 443724 kB
    LowFree: 14388 kB
    SwapTotal: 2098168 kB
    SwapFree: 2055688 kB
    Dirty: 40 kB
    Writeback: 0 kB
    AnonPages: 215676 kB
    Mapped: 82244 kB
    Shmem: 5444 kB
    Slab: 28380 kB
    SReclaimable: 15676 kB
    SUnreclaim: 12704 kB
    KernelStack: 2208 kB
    PageTables: 9568 kB
    NFS_Unstable: 0 kB
    Bounce: 0 kB
    WritebackTmp: 0 kB
    CommitLimit: 2320028 kB
    Committed_AS: 1253224 kB
    VmallocTotal: 572472 kB
    VmallocUsed: 12508 kB
    VmallocChunk: 554084 kB
    HardwareCorrupted: 0 kB
    HugePages_Total: 0
    HugePages_Free: 0
    HugePages_Rsvd: 0
    HugePages_Surp: 0
    Hugepagesize: 2048 kB
    DirectMap4k: 13248 kB
    DirectMap2M: 444416 kB
    [ved@localhost ~]$
    or read this
    Linux memory leak?
    What is the relationship between "free" and "meminfo"
    Which is the actual free memory ??Which is memory leakage ???
    Pleae give detailed example .
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  4. 09-13-2010 #4
    ved
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    What is the relationship between "free" and "meminfo"

    [ved@localhost ~]$ free
    total used free shared buffers cached
    Mem: 443724 421944 21780 0 15832 152308
    -/+ buffers/cache: 253804 189920
    Swap: 2098168 72304 2025864
    # it show total memory used memory and rest is free memory i .e 21780
    @ meminfo
    is show total memory =MemTotal: 443724 kB, memory used by process= ,
    free memory=MemFree: 21780 kB
    The actual free memory ??
    Free ram =21780
    Free swap = 2025864

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  5. 09-13-2010 #5
    chuikingman
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    Quote Originally Posted by ved View Post
    [ved@localhost ~]$ free
    total used free shared buffers cached
    Mem: 443724 421944 21780 0 15832 152308
    -/+ buffers/cache: 253804 189920
    Swap: 2098168 72304 2025864
    # it show total memory used memory and rest is free memory i .e 21780
    @ meminfo
    is show total memory =MemTotal: 443724 kB, memory used by process= ,
    free memory=MemFree: 21780 kB
    so in your case the freemem is 14388 kB in meminfo
    in output of "free" command it is 21780 kB.
    So the memory leakage is 21780 -14388 ??
    Is it right ???
    Please advice .
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  6. 09-13-2010 #6
    ved
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    Smile

    In both case case free memory is same
    that is 21780 and i think memory leaking is memory used by unwanted program
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  7. 09-13-2010 #7
    chuikingman
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    Which one is larger if there is memory leakage ???
    the value in output of "free" or value in /proc/meminfo ???
    which one ???
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  8. 09-13-2010 #8
    ved
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    Asking good questions

    http://www.linuxforums.org/forum/lin...tions-2-a.html
    http://www.linuxforums.org/forum/lin...ead-first.html
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  9. 09-13-2010 #9
    chuikingman
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    so, what is first example ???
    What is the purpose ???
    Please describe .......
    I do not understand why you post first example .....
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  10. 09-13-2010 #10
    ved
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    sorry for first example i put the comands after some time and when post the command
    data is not in sane sequence so sorry for that
    now Screenshot is give the same
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