Re: Speed...

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: tmickol(at)combimatrix(dot)com
Cc: svenne(at)krap(dot)dk, pgsql-general(at)postgresql(dot)org
Subject: Re: Speed...
Date: 2001-06-23 15:56:03
Message-ID: 7803.993311763@sss.pgh.pa.us
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"Tim Mickol" <tmickol(at)combimatrix(dot)com> writes:
> some quick (and I might add disappointing) benchmark results...

As has been pointed out before, you must use a pgbench scale factor
higher than one if you are interested in making meaningful measurements
for more than one concurrent client. At scale one, there is only one
"branch", so *every* transaction needs to update the same branch
balance, so there's effectively no concurrency.

regards, tom lane

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