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Re: heavy swapping, not sure why

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Merlin Moncure <mmoncure(at)gmail(dot)com>
Cc: Lonni J Friedman <netllama(at)gmail(dot)com>, pgsql-general <pgsql-general(at)postgresql(dot)org>
Subject: Re: heavy swapping, not sure why
Date: 2011-08-30 19:18:55
Message-ID: 25094.1314731935@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-general
Merlin Moncure <mmoncure(at)gmail(dot)com> writes:
> On Tue, Aug 30, 2011 at 11:17 AM, Lonni J Friedman <netllama(at)gmail(dot)com> wrote:
>> In the past 18 hours, swap usage has nearly doubled on systemA:
>> $ free -m
>>             total       used       free     shared    buffers     cached
>> Mem:         56481      56210        271          0         11      52470
>> -/+ buffers/cache:       3727      52753
>> Swap:         1099         35       1064
>> 
>> As a reminder, this is what it was yesterday afternoon (roughly 18
>> hours earlier):
>>            total       used       free     shared    buffers     cached
>> Mem:         56481      55486        995          0         15      53298
>> -/+ buffers/cache:       2172      54309
>> Swap:         1099         18       1081

> This is totally uninteresting.

Yeah.  You're going to need a whole lot more than 17MB of bloat before
it'll be possible to tell which process is at fault, given that the
expected process sizes are up to 10GB.

			regards, tom lane

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