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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: 2005-03-02 15:21:41
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
On Tue, Mar 01, 2005 at 05:17:07PM -0500, Tom Lane wrote:
> Mark Wong <markw(at)osdl(dot)org> writes:
> > On Tue, Mar 01, 2005 at 04:57:11PM -0500, Tom Lane wrote:
> >> 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.
> My point was that unpatched 8.0.1 seems to have a pretty level TPM
> rate.  If the patched version levels out at something not far below
> that, I'll be satisfied.  If it continues to degrade then I won't be
> satisfied ... but the test stops short of telling what will happen.
> If you could run it for 2 hours then we'd probably know enough.

Ah, ok.  I've reapplied the 2Q patch to CVS from 20050301:

I ran it for 3 hours, just in case, and the charts suggest it flattens
out after 2 hours.


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