Re: bgwriter stats - Mailing list pgsql-patches

From Neil Conway
Subject Re: bgwriter stats
Date
Msg-id 45FEEB42.8060708@samurai.com
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In response to bgwriter stats  (Magnus Hagander <magnus@hagander.net>)
Responses Re: bgwriter stats
List pgsql-patches
Magnus Hagander wrote:
> Anyway. Attached patch adds this to the bgwriter shared memory. Is it
> safe to do this, and then just have a regular function running in a
> normal backend pulling out the value and returning it to the user,
> without locking?
If the variable is an int64, I don't believe so: the architecture might
not implement atomic read/writes of int64 values.

-Neil


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