On 22.12.2010 18:12, Merlin Moncure wrote:
On Wed, Dec 22, 2010 at 11:06 AM, Tom Lane<[email protected]> wrote:
Merlin Moncure<[email protected]> writes:
well, simon's point that hint bits complicate checksum may nor may not
be the case, but no hint bits = less i/o = less checksumming (unless
you checksum around the hint bits).
I think you're optimistically assuming the extra clog accesses don't
cost any I/O.
right, but clog is much more highly packed which is both a good and a
bad thing.
As a sidenote: note that the clog is not currently CRC'd.
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
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