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.
--
Josh Berkus
Aglio Database Solutions
San Francisco