Re: The BUFFER_HIT and BUFFER_MISS probes seem pretty darn redundant - Mailing list pgsql-hackers

From Robert Lor
Subject Re: The BUFFER_HIT and BUFFER_MISS probes seem pretty darn redundant
Date
Msg-id 49C9545F.5040902@sun.com
Whole thread Raw
In response to The BUFFER_HIT and BUFFER_MISS probes seem pretty darn redundant  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
Tom Lane wrote:
> Whilst cleaning up the dtrace probe documentation, I realized that
> there is nothing the aforementioned probes tell you that you can't find
> out (with a lot more data besides) from the final argument of the
> BUFFER_READ_DONE probe.  Furthermore, tallying them as-is would be
> misleading since you couldn't distinguish true reads from relation
> extension requests.  I think we should just remove them.
>   
Agreed. The found flag from BUFFER_READ_DONE will serve the same 
purpose. As always, thanks for offering great solutions!

-Robert


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