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PostgreSQL 9.3 beta: Federated databases and more

PostgreSQL 9.3 beta: Federated databases and more

Posted May 16, 2013 18:09 UTC (Thu) by andresfreund (subscriber, #69562)
In reply to: PostgreSQL 9.3 beta: Federated databases and more by jberkus
Parent article: PostgreSQL 9.3 beta: Federated databases and more

> Actually, we're still arguing about which algorithm to use. Expect to see some algo changes in successive betas.

I think that ship has sailed and for the on-disk page checksums we are going with the modified FNV.

Explanations about the algorithm:
http://git.postgresql.org/gitweb/?p=postgresql.git;a=blob;...

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PostgreSQL 9.3 beta: Federated databases and more

Posted May 17, 2013 7:26 UTC (Fri) by Tobu (subscriber, #24111) [Link]

MurmurHash3 has better throughput and dispersion.

PostgreSQL 9.3 beta: Federated databases and more

Posted May 18, 2013 1:04 UTC (Sat) by luto (subscriber, #39314) [Link]

And xxhash claims to beat both.

SipHash is also interesting, but probably not for this use case.

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