| From: | Martijn van Oosterhout <kleptog(at)svana(dot)org> |
|---|---|
| To: | hubert depesz lubaczewski <depesz(at)depesz(dot)com> |
| Cc: | Noah Misch <noah(at)leadboat(dot)com>, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Huge spikes in number of connections doing "PARSE" |
| Date: | 2011-03-14 21:21:27 |
| Message-ID: | 20110314212126.GA8220@svana.org |
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| Lists: | pgsql-general |
On Mon, Mar 14, 2011 at 07:49:46PM +0100, hubert depesz lubaczewski wrote:
> These 60 were summarized, and output is available here:
> http://www.depesz.com/various/locks.summary.txt
>
> as you can seem, in 48 cases backend process was in semop(), which relates
> directly to my previous findings with ps/wchan.
It's unfortunate you don't have debug symbols enabled, which makes
these traces somewhat unreliable. So you get odd things like index_open
calling index_close.
The common factor seems to be lots of index locks. Do you have very
many indexes?
Have a nice day,
--
Martijn van Oosterhout <kleptog(at)svana(dot)org> http://svana.org/kleptog/
> Patriotism is when love of your own people comes first; nationalism,
> when hate for people other than your own comes first.
> - Charles de Gaulle
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