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Re: Revised signal multiplexer patch

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
Cc: jcasanov(at)systemguards(dot)com(dot)ec, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Revised signal multiplexer patch
Date: 2009-07-31 17:40:23
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Lists: pgsql-hackers
Fujii Masao <masao(dot)fujii(at)gmail(dot)com> writes:
> But there is one issue; the extra search is always required to send a notify
> interrupt. This is because pg_listener doesn't have a backend ID and we
> cannot pass it to SendProcSignal. In order to solve this issue, we should
> newly add backend ID field into pg_listener?

Hmm.  I'm not tremendously concerned about that --- the LISTEN/NOTIFY
code has been on the agenda for a complete rewrite for a long time now,
and I keep hoping pg_listener will go away entirely sometime soon.
I don't feel a need to go and fix a marginal performance issue there.

			regards, tom lane

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