linux-kernel - Re: top lies ?

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Message-ID: <Pine.BSO.4.63.0711130319520.3123@rudy.mif.pg.gda.pl>
Date:	Tue, 13 Nov 2007 03:23:23 +0100 (CET)
From:	Tomasz Kłoczko <kloczek@...y.mif.pg.gda.pl>
To:	Andreas Schwab <schwab@...e.de>
cc:	linux-kernel@...r.kernel.org
Subject: Re: top lies ?

On Tue, 13 Nov 2007, Andreas Schwab wrote:

> Tomasz Kłoczko <kloczek@...y.mif.pg.gda.pl> writes:
>
>> Some data showed by top command looks like completly trashed.
>> Fragment from top output:
>>
>> Mem:   2075784k total,  2053352k used,    22432k free,    19260k buffers
>> Swap:  2096472k total,      136k used,  2096336k free,  1335080k cached
>>
>>   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  SWAP nFLT WCHAN     COMMAND
>> 14515 mysql     20   0 1837m 563m 4132 S   39 27.8  27:14.20 1.2g   18 -         mysqld
>>
>> How it is possible that swap ussage is 136k and swapped out portion of (in
>> this case) mysqld process is 1.2g ?
>
> SWAP is just VIRT - RES.  It means that 1.2g of the allocated virtual
> address space is not resident, but it does not mean that all of it is
> written to the swap space, it can also be part of a file based mapping.

OK but where I can find per process data about number of 
pages/amout of memory in swap ?

kloczek
-- 
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*Ludzie nie mają problemów, tylko sobie sami je stwarzają*
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Tomasz Kłoczko, sys adm @zie.pg.gda.pl|*e-mail: kloczek@...y.mif.pg.gda.pl*