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Perfomance degradation 9.3 (vs 9.2) for FreeBSD - Mailing list pgsql-hackers

From Palle Girgensohn
Subject Perfomance degradation 9.3 (vs 9.2) for FreeBSD
Date
Msg-id 2AE143D2-87D3-4AD1-AC78-CE2258230C05@FreeBSD.org
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Responses Re: Perfomance degradation 9.3 (vs 9.2) for FreeBSD  (Francois Tigeot <ftigeot@wolfpond.org>)
Re: Perfomance degradation 9.3 (vs 9.2) for FreeBSD  (Andres Freund <andres@2ndquadrant.com>)
Re: Perfomance degradation 9.3 (vs 9.2) for FreeBSD  (Tatsuo Ishii <ishii@postgresql.org>)
Re: Perfomance degradation 9.3 (vs 9.2) for FreeBSD  (Andres Freund <andres@2ndquadrant.com>)
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Hi!

I see performance degradation with PostgreSQL 9.3 vs 9.2 on FreeBSD, and I'm wondering who to poke to mitigate the
problem.In reference to this thread [1], who where the FreeBSD people that Francois mentioned? If mmap needs to perform
wellin the kernel, I'd like to know of someone with FreeBSD kernel knowledge who is interested in working with mmap
perfocmance.If mmap is indeed the cuplrit, I've just tested 9.2.8 vs 9.3.4, I nevere isolated the mmap patch, although
Ibelieve Francois did just that with similar results. 

Enclosed is a report from a simple pgbench check.

Palle

[1] http://www.postgresql.org/message-id/20130126120024.GA21101@sekishi.zefyris.com
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