Re: UPDATES hang every 5 minutes

From: Joseph S <jks(at)selectacast(dot)net>
To: mr19 <marc_rossi(at)yahoo(dot)com>
Subject: Re: UPDATES hang every 5 minutes
Date: 2007-08-09 23:37:51
Message-ID: 46BBA54F.5010101@selectacast.net
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Keep an eye on pg_stat_activity and pg_locks to see if any lock
contention is going on.

mr19 wrote:
> I have a process that updates ~ 1500 rows in a table once a second. Every 5
> minutes (almost exactly) the update takes ~ 15 seconds (normally < 1). I
> have run htop/top on the machine during this time period and do not see
> anything unusual. I am running postgres 8.1.8 on a FC6 box.
>
> Any type of internal accounting/logging set to 5 minute intervals by default
> within postgres? Right now I am looking at pg_stats activity to see if
> there is anything there but so far have had no luck.
>
> TIA
> Marc

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