From: | "Magnus Hagander" <mha(at)sollentuna(dot)net> |
---|---|
To: | "Andrew Dunstan" <andrew(at)dunslane(dot)net> |
Cc: | "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "Qingqing Zhou" <zhouqq(at)cs(dot)toronto(dot)edu>, <pgsql-hackers(at)postgresql(dot)org>, "Merlin Moncure" <merlin(dot)moncure(at)rcsonline(dot)com> |
Subject: | Re: [PATCHES] Win32 CHECK_FOR_INTERRUPTS() performance |
Date: | 2005-10-22 14:24:44 |
Message-ID: | 6BCB9D8A16AC4241919521715F4D8BCE92E776@algol.sollentuna.se |
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Lists: | pgsql-hackers |
> >>And the patch that was applied gives the same result.
> >>
> >>What is more, I am not seeing the reported speedup - in fact I am
> >>seeing no speedup worth mentioning.
> >>
> >>This is on XP-Pro, with default postgres settings. The test
> sets were
> >>somewhat larger than thos Magnus used - basically TPC-H
> lineitems and
> >>orders tables (6m and 1.5m rows respectively).
> >>
> >>
> >
> >First, that was Merlin and not me :-)
> >
> >
>
> My apologies to both of you. Or to at least one of you, anyway. :-)
:-)
> >Second, it didn't really show any improvement for him either in his
> >normal test. But when he re-ran it with just the count(*) test it
> >showed improvement. Did you run a count(*) test or some other test?
>
>
> The tests were
<snip>
That certainly looks like a similar test. Just checking :-)
You were on XP - Merlin, what OS were you on? It could be possible
things have chenged there as well...
> But it looks to me like we need to leave this for 8.2 now
> anyway, unless someone can quickly get to the bottom of why
> it's hanging.
Agreed. I definitly vote for backing out the patch so we don't block the
release. If we find the problem we put it back in before release, but if
it takes a while we just wait for 8.2.
//Magnus
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