Re: How do I check a process' memory usage?

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On 03/23/2018 08:55 PM, fred roller wrote:


On Fri, Mar 23, 2018 at 10:32 PM, Todd Chester <ToddAndMargo@xxxxxxxx <mailto:ToddAndMargo@xxxxxxxx>> wrote:

    Hi All,

    FC27, x64

    I have a 32 bit program running on a server that may be
    running out of memory.

     From the command line, how do I check this?

    Many thanks,
    -T

    This web site only made my head spin:

    https://stackoverflow.com/questions/131303/how-to-measure-actual-memory-usage-of-an-application-or-process
    <https://stackoverflow.com/questions/131303/how-to-measure-actual-memory-usage-of-an-application-or-process>

The command:

top

should give you a live break down of processes to include % of memory for a process.


Hi Fred,

Thank you!

Look like it is getting close to the harry edge of a 32 bit program.

-T


$ top -o %MEM

from `man top`:

2. %MEM  --  Memory Usage (RES)
      A task's currently used share of available physical memory.

17. RES  --  Resident Memory Size (KiB)
      The non-swapped physical memory a task is using.

36. VIRT  --  Virtual Memory Size (KiB)
      The  total  amount  of  virtual  memory  used by the task.
      It includes all code, data and shared libraries plus pages
      that have  been swapped out and pages that have been mapped
      but not used.

%Cpu(s): 11.8 us, 8.8 sy, 0.0 ni, 54.3 id, 23.5 wa, 0.7 hi, 0.8 si, 0.0 st
KiB Mem : 32710736 total,  5083192 free,  6250780 used, 21376764 buff/cache
KiB Swap: 16385020 total, 16059160 free,   325860 used. 25605772 avail Mem


  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
15160 root 20 0 4112444 3.672g 11784 S 2.0 11.8 40:44.60 redacted.bin


%MEM -- Memory Usage (RES)
    11.8% (0.118 * 3271036 /1e6 = 3.59818096 GiB)

RES -- Resident Memory Size (KiB)
    3.672  GiB

VIRT -- Virtual Memory Size (KiB):
    4112444 KiB  (4.112444 GiB)

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