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Re: spinlock->pthread_mutex : first results with Jeff's pgbench+plsql

From: Nils Goroll <slink(at)schokola(dot)de>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Martijn van Oosterhout <kleptog(at)svana(dot)org>, Merlin Moncure <mmoncure(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: spinlock->pthread_mutex : first results with Jeff's pgbench+plsql
Date: 2012-07-02 15:38:08
Message-ID: 4FF1C060.9020704@schokola.de (view raw or flat)
Thread:
Lists: pgsql-hackers
> 3.1.7?

Sorry, that was a typo. 9.1.3.

Yes, I had mentioned the Version in my initial posting. This version is the one
I need to work on as long as 9.2 is beta.

> A major scalability bottleneck caused by spinlock contention was fixed
> in 9.2 - see commit b4fbe392f8ff6ff1a66b488eb7197eef9e1770a4.  I'm not
> sure that it's very meaningful to do performance testing on versions
> that are known to be out of date.

Apparently I have not pointed this out clearly enough. Sorry.

Nils

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