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Re: 8.0.X and the ARC patent

From: Mark Wong <markw(at)osdl(dot)org>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, pgsql(at)mohawksoft(dot)com,PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: 8.0.X and the ARC patent
Date: 2005-03-01 22:06:42
Message-ID: 20050301220642.GA3383@osdl.org (view raw or flat)
Thread:
Lists: pgsql-hackers
On Tue, Mar 01, 2005 at 04:57:11PM -0500, Tom Lane wrote:
> Mark Wong <markw(at)osdl(dot)org> writes:
> > About a 6% increase, but if you look at the performance over time,
> > it's degrading steadily.  The latter throughput peaks near 5000.
> 
> Curious.  The immediate question is "does it ever flatten out, and
> if so at what TPM rate compared to 8.0.1?"  Could you run the same
> test for a longer duration?

The comparison was against 8.0.1, or did you mean 8.0.1 with the 2Q
patch?  I can run a longer duration and see how it looks.

> Also, I suppose the large spike at 30 minutes is from a checkpoint?

Yes, checkpoint_timeout is set to 1800 seconds.

Mark

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