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Re: [GENERAL] PostgreSQL crashing

From: Richard Huxton <dev(at)archonet(dot)com>
To: barai(at)cs(dot)ucr(dot)edu
Cc: pgsql-general(at)postgresql(dot)org, pgsql-admin(at)postgresql(dot)org
Subject: Re: [GENERAL] PostgreSQL crashing
Date: 2005-12-22 07:27:23
Message-ID: 43AA555B.3090205@archonet.com (view raw or flat)
Thread:
Lists: pgsql-adminpgsql-general
barai(at)cs(dot)ucr(dot)edu wrote:
> PostgreSQL runs for a while but always eventually (30min - 2hrs) crashes. 
> I thought it was memory initially but Memtest had no errors after running
> for a day.  I don't think it is a hardware issues because I can run other
> applications without error.  I have ran both version 8.0.3 and 8.1.1 with
> the same error.  I have posted a clipping of the crash from the system
> log.  Any help would be greatly appreciated.
> 
> Dec 20 17:14:57 server4 kernel: postmaster: page allocation failure.
> order:0, mode:0xd0
> Dec 20 17:14:57 server4 kernel:  [<c0143271>] __alloc_pages+0x2e1/0x2f7
> Dec 20 17:14:57 server4 kernel:  [<c014329f>] __get_free_pages+0x18/0x24
> Dec 20 17:14:57 server4 kernel:  [<c0145bfc>] kmem_getpages+0x1c/0xbb
...
> Dec 20 17:15:01 server4 kernel:  [<c026d9ca>] sync_sbs+0x22/0x2f
> Dec 20 17:15:01 server4 kernel:  [<c026da5b>] md_update_sb+0x84/0xc6
> Dec 20 17:15:01 server4 kernel:  [<c02706b5>] md_write_start+0x5e/0x8c

Hmm - not sure what this is showing, but since the log is all kernel 
activity and it goes on for four seconds after PostgreSQL errors I'm not 
sure it's your crash in progress.

You probably need to check the mailing-list archives for details on how 
to make sure you get a core dump. Also people will want to know what 
version of PG we are looking at, what O.S. (Linux by the look of it, but 
what distro/version?) and how you installed PG (from source/rpm/etc).

-- 
   Richard Huxton
   Archonet Ltd

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