Re: Block-level CRC checks

Markus Wanner wrote:
> Alvaro Herrera wrote:
>> So this discussion died with no solution arising to the
>> hint-bit-setting-invalidates-the-CRC problem.
> 
> Isn't double-buffering solving this issue? Has somebody checked if it
> even helps performance due to being able to release the lock on the
> buffer *before* the syscall?

Double-buffering helps with the hint bit issues within shared buffers, 
but doesn't help with the torn page and hint bits problem. The torn page 
problem seems to be the show-stopper.

--   Heikki Linnakangas  EnterpriseDB   http://www.enterprisedb.com