| From: | Ants Aasma <ants(at)cybertec(dot)at> |
|---|---|
| To: | Craig Ringer <craig(at)2ndquadrant(dot)com> |
| Cc: | Jeff Davis <pgsql(at)j-davis(dot)com>, Greg Smith <greg(at)2ndquadrant(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Enabling Checksums |
| Date: | 2013-03-23 12:42:59 |
| Message-ID: | CA+CSw_sx6AqRST2sg2YN1vQFCaqQPcnZYqGPpUoT1mns3_63qw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Sat, Mar 23, 2013 at 5:14 AM, Craig Ringer <craig(at)2ndquadrant(dot)com> wrote:
> Making zero a "not checksummed" magic value would significantly detract
> from the utility of checksums IMO.
FWIW using 65521 modulus to compress larger checksums into 16 bits
will leave 14 non-zero values unused.
Regards,
Ants Aasma
--
Cybertec Schönig & Schönig GmbH
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A-2700 Wiener Neustadt
Web: http://www.postgresql-support.de
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