From: Gregory Stark <stark@enterprisedb.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Josh Berkus <josh@agliodbs.com>
Cc: Alvaro Herrera <alvherre@commandprompt.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: User concurrency thresholding: where do I look?
Date: Fri, 20 Jul 2007 12:46:07 +0100
Message-ID: <871wf39u2o.fsf@oxford.xeocode.com> (raw)
In-Reply-To: <12686.1184865938@sss.pgh.pa.us>
References: <200707190828.59088.josh@agliodbs.com>
<20070719154912.GG6538@alvh.no-ip.org>
<200707190922.24497.josh@agliodbs.com>
<12686.1184865938@sss.pgh.pa.us>
"Tom Lane" <tgl@sss.pgh.pa.us> writes:
> Josh Berkus <josh@agliodbs.com> writes:
>
>> That's an interesting thought. Let me check lock counts and see if this is
>> possibly the case.
>
> AFAIK you'd get hard failures, not slowdowns, if you ran out of lock
> space entirely
I assume you've checked the server logs and are sure that you aren't in fact
getting errors. I could, for example, envision a situation where a fraction of
the transactions are getting some error and those transactions are therefore
not being counted against the txn/s result.
--
Gregory Stark
EnterpriseDB http://www.enterprisedb.com
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To: pgsql-performance@postgresql.org
Cc: stark@enterprisedb.com, tgl@sss.pgh.pa.us, josh@agliodbs.com, alvherre@commandprompt.com
Subject: Re: User concurrency thresholding: where do I look?
In-Reply-To: <871wf39u2o.fsf@oxford.xeocode.com>
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