Re: Cost of XLogInsert CRC calculations

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
Cc: Manfred Koizar <mkoi-pg(at)aon(dot)at>, Mark Cave-Ayland <m(dot)cave-ayland(at)webbased(dot)co(dot)uk>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Cost of XLogInsert CRC calculations
Date: 2005-05-18 02:37:05
Message-ID: 16235.1116383825@sss.pgh.pa.us
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Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> I don't understand why we are testing 64-bit CRC when I thought we
> agreed that 32-bit was good enough for our purposes.

Well, we need to understand exactly what is going on here. I'd not
like to think that we dropped back from 64 to 32 bit because of one
possibly-minor optimization bug in one compiler on one platform.
Even if that compiler+platform is 90% of the market.

regards, tom lane

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