| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc> |
| Cc: | Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org, Robert Haas <robertmhaas(at)gmail(dot)com> |
| Subject: | Re: pgbench cpu overhead (was Re: lazy vxid locks, v1) |
| Date: | 2011-07-24 15:55:04 |
| Message-ID: | 12562.1311522904@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)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
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