| From: | Gregory Stark <stark(at)enterprisedb(dot)com> |
|---|---|
| To: | "Csaba Nagy" <nagy(at)ecircle-ag(dot)com> |
| Cc: | "Decibel!" <decibel(at)decibel(dot)org>, <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: Linux mis-reporting memory |
| Date: | 2007-09-21 09:43:07 |
| Message-ID: | 87r6ksuzf8.fsf@oxford.xeocode.com |
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| Lists: | pgsql-performance |
"Csaba Nagy" <nagy(at)ecircle-ag(dot)com> writes:
> On Fri, 2007-09-21 at 09:03 +0100, Gregory Stark wrote:
>> >> Mem: 32945280k total, 32871832k used, 73448k free, 247432k buffers
>> >> Swap: 1951888k total, 42308k used, 1909580k free, 30294300k cached
>> >
>> It seems to imply Linux is paging out sysV shared memory. In fact some of
>> Heikki's tests here showed that Linux would do precisely that.
>
> But then why is it not reporting that in the "Swap: used" section ? It
> only reports 42308k used swap.
Hm, good point.
The other possibility is that Postgres just hasn't even touched a large part
of its shared buffers.
--
Gregory Stark
EnterpriseDB http://www.enterprisedb.com
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