Pg on SMP half-powered

From: Víctor Romero <romero(at)kde(dot)org>
To: pgsql-hackers(at)postgresql(dot)org
Subject: Pg on SMP half-powered
Date: 2001-07-05 14:51:35
Message-ID: 200107051658.f65GwPI29235@programasdefuturo.com
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Hello, hackers!

I am running postgresql 7.1 on a SMP Linux box. It runs, but it never pass a
loadavg of 0.4, no matter how I try to overload the system.

The same configuration, the same executable, the same test on a non-SMP
machine gives a loadavg of 19.

That means that a Xeon SMP box with 1Gb of RAM goes slowlier than a weak
CPU, with the same postgres, the same configuration, and the same test.

Anybody knows what is happening? Is there something to do on a SMP machine
for it to run? I tried with lots of shared memory, and with "commit_delay=0",
but nothing worked.

Yours:

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