On 20.04.2016 16:58, Alvaro Herrera wrote:
Alex Ignatov wrote:
Hello everyone!
Today in Big Data epoch silent data corruption becoming more and more issue
to afraid of. With uncorrectable read error rate ~ 10^-15 on multiterabyte
disk bit rot is the real issue.
I think that today checksumming data must be mandatory set by default.
Only if someone doesn't care about his data he can manually turn this option
off.
In principle I support the idea of turning data checksums by default,
but can you provide some numbers on how it affects performance on
various workloads? That's a critical point in the discussion.
Right now i am working on this tests. On various media - hdd ssd ram and
some various workload. As soon as results be ready i'll provide my numbers
--
Alex Ignatov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company
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