From: David Boreham <david_list@boreham.org>
To: James Mansion <james@mansionfamily.plus.com>
Cc: Jakub Ouhrabka <kuba@comgate.cz>
Cc: pgsql-performance@postgresql.org
Subject: Re: Linux/PostgreSQL scalability issue - problem with 8 cores
Date: Fri, 04 Jan 2008 13:55:08 -0700
Message-ID: <477E9D2C.5070707@boreham.org> (raw)
In-Reply-To: <477E9B3C.6040906@mansionfamily.plus.com>
References: <flii57$748$1@news.hub.org>
<477E9B3C.6040906@mansionfamily.plus.com>
James Mansion wrote:
> Jakub Ouhrabka wrote:
>> How can we diagnose what is happening during the peaks?
> Can you try forcing a core from a bunch of the busy processes? (Hmm -
> does Linux have an equivalent to the useful Solaris pstacks?)
There's a 'pstack' for Linux, shipped at least in Red Hat distributions
(and possibly others,
I'm not sure). It's a shell script wrapper around gdb, so easily ported
to any Linux.
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To: pgsql-performance@postgresql.org
Cc: david_list@boreham.org, james@mansionfamily.plus.com, kuba@comgate.cz
Subject: Re: Linux/PostgreSQL scalability issue - problem with 8 cores
In-Reply-To: <477E9D2C.5070707@boreham.org>
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