Re: Pg+Linux swap use

From: "scott(dot)marlowe" <scott(dot)marlowe(at)ihs(dot)com>
To: "alexandre :: aldeia digital" <alepaes(at)aldeiadigital(dot)com(dot)br>
Cc: <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Pg+Linux swap use
Date: 2003-10-31 18:52:35
Message-ID: Pine.LNX.4.33.0310311151050.25806-100000@css120.ihs.com
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We had a problem at work that when a windows box would connect to a samba
share with a lot of files in it, the kswapd was going nuts, even though we
weren't low on memory at all. Updating to the 2.4.18 or so of the later
redhats fixed that issue. It might be related. I think the kflush daemon
can get fooled into thinking it needs to get hoppin right now in older
2.4.x kernels.

On Fri, 31 Oct 2003, alexandre :: aldeia digital wrote:

> Scott, Jeff and Shridhar:
>
> 1 GB RAM :)
>
> The stock kernels are not the same, HyperThreading enabled. 80
> simultaneous connections. sort_mem = 4096
>
> I will compile my own kernel on this weekend, and I will report
> to the list after.
>
> Thank's all
>
> Alexandre
>
>
> > Also are two kernels exactly same? In my experience linux kernel behaves
> > slightly different from version to version w.r.t swap aggressiveness...
> >
> > Shridhar
> >
> >
> > ---------------------------(end of broadcast)---------------------------
> > TIP 4: Don't 'kill -9' the postmaster
> >
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 5: Have you checked our extensive FAQ?
>
> http://www.postgresql.org/docs/faqs/FAQ.html
>
>

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