Re: Added columns to pg_stat_activity - Mailing list pgsql-patches

From Andrew Dunstan
Subject Re: Added columns to pg_stat_activity
Date
Msg-id 427F8148.9060100@dunslane.net
Whole thread Raw
In response to Re: Added columns to pg_stat_activity  (Neil Conway <neilc@samurai.com>)
Responses Re: Added columns to pg_stat_activity
List pgsql-patches
Is this what broke the regression tests on HEAD?

cheers

andrew

Neil Conway wrote:

> Tom Lane wrote:
>
>> If the stats collector gets sufficiently backed up, you will lose
>> messages. [...] Please do not try to make piecemeal changes in that
>> basic design decision.
>
>
> Fair enough.
>
> > (Actually, we could skinny it down to backend PID only ...
>
>> but that would add a hashtable lookup to every message reception in
>> the stats collector, instead of just indexing into a BackendId array,
>> so it'd probably be a net loss.)
>
>
> Yeah, I agree -- backend ID and database ID isn't too bad.
>
> I've applied Magnus patch and bumped the catalog version. I'll take a
> look at reorganizing the statistics collector so that the message
> header is smaller shortly.
>
> -


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