From: Arjen van der Meijden <acmmailing@tweakers.net>
To: pgsql-performance@postgresql.org
Subject: Re: [kris@obsecurity.org: Progress on scaling of FreeBSD on 8 CPU systems]
Date: Mon, 05 Mar 2007 11:52:08 +0100
Message-ID: <45EBF658.30907@tweakers.net> (raw)
In-Reply-To: <45E84790.6050609@tweakers.net>
References: <20070227182621.GE29041@decibel.org>
<20070302150129.GF4885@alvh.no-ip.org>
<45E84790.6050609@tweakers.net>
And here is that latest benchmark we did, using a 8 dual core opteron
Sun Fire x4600. Unfortunately PostgreSQL seems to have some difficulties
scaling over 8 cores, but not as bad as MySQL.
http://tweakers.net/reviews/674
Best regards,
Arjen
Arjen van der Meijden wrote:
> Alvaro Herrera wrote:
>> Interesting -- the MySQL/Linux graph is very similar to the graphs from
>> the .nl magazine posted last year. I think this suggests that the
>> "MySQL deficiency" was rather a performance bug in Linux, not in MySQL
>> itself ...
>
> The latest benchmark we did was both with Solaris and Linux on the same
> box, both showed such a drop. So I doubt its "not in MySQL", although it
> might be possible to fix the load MySQL's usage pattern poses on a
> system, via the OS. And since MySQL 5.0.32 is less bad than 4.1.22 on
> that system. We didn't have time to test 5.0.25 again, but .32 scaled
> better, so at least some of the scaling issues where actually fixed in
> MySQL itself.
>
> Best regards,
>
> Arjen
>
> ---------------------------(end of broadcast)---------------------------
> TIP 7: You can help support the PostgreSQL project by donating at
>
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To: pgsql-performance@postgresql.org
Cc: acmmailing@tweakers.net
Subject: Re: [kris@obsecurity.org: Progress on scaling of FreeBSD on 8 CPU systems]
In-Reply-To: <45EBF658.30907@tweakers.net>
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