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 -- 18:55:22 up 1:40, 4 users, load average: 2.00, 2.04, 2.00 Linux 2.6.5-01 #7 SMP Fri Apr 16 22:45:31 MDT 2004
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