Hi I'd LOVE to contribute on this but I don't have vmstat and I'm not running linux.
How can I help? Regards On Wed, 28 Apr 2004, Robert Creager wrote: > Date: Wed, 28 Apr 2004 18:57:53 -0600 > From: Robert Creager <[EMAIL PROTECTED]> > To: Josh Berkus <[EMAIL PROTECTED]> > Cc: [EMAIL PROTECTED], Dirk_Lutzebäck <[EMAIL PROTECTED]>, [EMAIL PROTECTED], > Tom Lane <[EMAIL PROTECTED]>, Joe Conway <[EMAIL PROTECTED]>, > scott.marlowe <[EMAIL PROTECTED]>, > Bruce Momjian <[EMAIL PROTECTED]>, [EMAIL PROTECTED], > Neil Conway <[EMAIL PROTECTED]> > Subject: Re: [PERFORM] Wierd context-switching issue on Xeon > > When grilled further on (Wed, 21 Apr 2004 10:29:43 -0700), > Josh Berkus <[EMAIL PROTECTED]> confessed: > > > Dave, > > > > > After some testing if you use the current head code for s_lock.c which > > > has some mods in it to alleviate this situation, and change > > > SPINS_PER_DELAY to 10 you can drastically reduce the cs with tom's test. > > > I am seeing a slight degradation in throughput using pgbench -c 10 -t > > > 1000 but it might be liveable, considering the alternative is unbearable > > > in some situations. > > > > > > Can anyone else replicate my results? > > > > Can you produce a patch against 7.4.1? I'd like to test your fix against a > > real-world database. > > I would like to see the same, as I have a system that exhibits the same behavior > on a production db that's running 7.4.1. > > Cheers, > Rob > > > -- Olivier PRENANT Tel: +33-5-61-50-97-00 (Work) 6, Chemin d'Harraud Turrou +33-5-61-50-97-01 (Fax) 31190 AUTERIVE +33-6-07-63-80-64 (GSM) FRANCE Email: [EMAIL PROTECTED] ------------------------------------------------------------------------------ Make your life a dream, make your dream a reality. (St Exupery) ---------------------------(end of broadcast)--------------------------- TIP 7: don't forget to increase your free space map settings
