| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | "Jeroen T(dot) Vermeulen" <jtv(at)xs4all(dot)nl>, Greg Stark <gsstark(at)mit(dot)edu>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Pre-allocation of shared memory ... |
| Date: | 2003-06-13 02:10:02 |
| Message-ID: | 200306130210.h5D2A2n27763@candle.pha.pa.us |
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| Lists: | pgsql-hackers |
Tom Lane wrote:
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > You have to love that swap + 1/2 ram option --- when you need four
> > possible options, there is something wrong with your approach. :-)
>
> I'm still wondering what the "no overcommit handling" option does,
> exactly.
I assume it does no kills, and allows you to commit until you run of of
swap and hang. This might be the BSD 4.4 behavior, actually.
It is bad to hang the system, but if it reports swap failure, at least
the admin knows why it failed, rather than killing random processes.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073
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