From: | Michael Stephenson <mstephenson(at)tirin(dot)openworld(dot)co(dot)uk> |
---|---|
To: | Gunnar Rønning <gunnar(at)polygnosis(dot)com> |
Cc: | "'PostgreSQL jdbc list'" <pgsql-jdbc(at)postgresql(dot)org> |
Subject: | Re: Re: RE: [ADMIN] High memory usage [PATCH] |
Date: | 2001-06-26 16:35:15 |
Message-ID: | Pine.LNX.4.30.0106261727550.23283-100000@tirin.openworld.co.uk |
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Thread: | |
Lists: | pgsql-admin pgsql-jdbc pgsql-patches |
> I agree that the tests are pretty inconclusive. We need something that
> simulates real usage better. What platform are you testing on Linux ?
> If so with native threads or green threads ?
Linux, I'm using native threads with the hot spot I'm using native
threads, which as I said was performing pretty much identically in both
cases. The non hot spot machine was using green threads which is where the
difference in performance was measurable.
> | I personally would advocate applying a patch similar to below to the
> | current cvs source.
>
> This I don't understand, was your intention to remove thread safety with this
> patch ? Looking at the way you introduce SimpleDateFormat as an instance
> variable it seems so.
Yeah, the patch is rubbish, I did it that way to remove the
(comparitively expensive) ThreadLocal.get inside the setDate and
SetTimeStamp, which is clearly stupid.
Michael xxx
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