From: Gregory Stark <stark@enterprisedb.com>
To: Jignesh K. Shah <J.K.Shah@Sun.COM>
Cc: Greg Smith <gsmith@gregsmith.com>
Cc: Simon Riggs <simon@2ndquadrant.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Benchmark Data requested
Date: Tue, 05 Feb 2008 00:10:55 +0000
Message-ID: <873as85kkw.fsf@oxford.xeocode.com> (raw)
In-Reply-To: <47A797E5.4000507@sun.com>
References: <1202150236.4252.521.camel@ebony.site>
<Pine.GSO.4.64.0802041500460.799@westnet.com>
<47A797E5.4000507@sun.com>
"Jignesh K. Shah" <J.K.Shah@Sun.COM> writes:
> Then for the power run that is essentially running one query at a time should
> essentially be able to utilize the full system (specially multi-core systems),
> unfortunately PostgreSQL can use only one core. (Plus since this is read only
> and there is no separate disk reader all other processes are idle) and system
> is running at 1/Nth capacity (where N is the number of cores/threads)
Is the whole benchmark like this or is this just one part of it?
Is the i/o system really able to saturate the cpu though?
--
Gregory Stark
EnterpriseDB http://www.enterprisedb.com
Ask me about EnterpriseDB's On-Demand Production Tuning
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To: pgsql-performance@postgresql.org
Cc: stark@enterprisedb.com, J.K.Shah@Sun.COM, gsmith@gregsmith.com, simon@2ndquadrant.com
Subject: Re: Benchmark Data requested
In-Reply-To: <873as85kkw.fsf@oxford.xeocode.com>
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