Re: Spinlocks, yet again: a new test case

From: Mark Kirkwood <markir(at)paradise(dot)net(dot)nz>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-hackers(at)postgreSQL(dot)org
Subject: Re: Spinlocks, yet again: a new test case
Date: 2005-09-12 03:16:59
Message-ID: 4324F32B.9070906@paradise.net.nz
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Tom Lane wrote:
> Anyone have SMP boxes of other types that they can try this on?
>

For those of us running antiques:

2x PIII 1Ghz 2G
Running on FreeBSD 6.0beta4 (non-debug kernel)

8.0.3:

N runtime: 1 158s 2 271s 4 567s

8.1beta1 (2005-08-28):

N runtime: 1 85s 2 139s 4 220s

Wow - a huge difference between the versions, I thought the handbrake
must be on for 8.0.3, but apparently not, all relevant parameters are
the same...

regards

Mark

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