Re: outdated (bad) information in pg_stat_activity

From: hubert depesz lubaczewski <depesz(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: PostgreSQL General <pgsql-general(at)postgresql(dot)org>
Subject: Re: outdated (bad) information in pg_stat_activity
Date: 2005-12-14 17:20:32
Message-ID: 9e4684ce0512140920s52a7a0e4v5d670deab566a6a4@mail.gmail.com
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On 12/14/05, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>
> hubert depesz lubaczewski <depesz(at)gmail(dot)com> writes:
> > my pg_stat_activity is raporting process working on a query for 12 hours
> > straight! (query_start).
> > 2 problems:
> > 1. this particular query runs typically between 80 and 200 miliseconds!
> > 2. procpid of this backend does not exists anymore in system
> It's possible that the "backend exited" message got dropped by the stats
> mechanism --- the stats code is deliberately designed to lose messages
> rather than delay the rest of the system, so it's not 100% reliable.
>

is it possible to "by hand" remove bad entries from this stats?

depesz

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