Re: ps_status on fastpath

Excerpts from Tom Lane's message of vie dic 17 16:25:17 -0300 2010:
> Alvaro Herrera <alvherre@commandprompt.com> writes:
> > Excerpts from Tom Lane's message of vie dic 17 12:41:06 -0300 2010:
> >> Hm, what about pgstat_report_activity()?
> 
> > I wasn't sure about that, because of the overhead, but now that I look
> > at it, it's supposed to be cheaper than changing the ps_status in some
> > cases, so I guess there's no harm.
> 
> Yeah, if we can afford a possible kernel call to set ps status, it
> doesn't seem like pgstat_report_activity should be a problem.  I'm
> also of the opinion that more people look at pg_stat_activity than
> ps output these days.

Well, actually, if the functions are cheap, presumably they aren't going
to stay for much time in either status report; what I'm after is fixing
the log_line_prefix stuff (%i I think it is).

-- 
Álvaro Herrera <alvherre@commandprompt.com>
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