Re: pgbench cpu overhead (was Re: lazy vxid locks, v1)

Stefan Kaltenbrunner <stefan@kaltenbrunner.cc> writes:
> interesting - iirc we actually had some reports about current libpq
> behaviour causing scaling issues on some OSes - see
> http://archives.postgresql.org/pgsql-hackers/2009-06/msg00748.php and
> some related threads. Iirc the final patch for that was never applied
> though and the original author lost interest, I think that I was able to
> measure some noticable performance gains back in the days but I don't
> think I still have the numbers somewhere.

Huh?  That patch did get applied in some form or other -- at least,
libpq does contain references to both SO_NOSIGPIPE and MSG_NOSIGNAL
these days.
        regards, tom lane