Re: Wierd context-switching issue on Xeon

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?

Dave
On Wed, 2004-04-21 at 08:10, Dirk_Lutzebäck wrote:
> It is intended to run indefinately.
>
> Dirk
>
> ohp(at)pyrenet(dot)fr wrote:
>
> >How long is this test supposed to run?
> >
> >I've launched just 1 for testing, the plan seems horrible; the test is cpu
> >bound and hasn't finished yet after 17:02 min of CPU time, dual XEON 2.6G
> >Unixware 713
> >
> >The machine is a Fujitsu-Siemens TX 200 server
> >
> >
>
>
>
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Dave Cramer
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