Hi,
Just wanted to update y'all - I traced down the bottleneck to
mod_specweb99.c. The bottleneck is caused by the POST & CAD_GET
transactions. If I eliminate the POST & CAD_GET from the SPECweb99 requests,
I don't see any spiky activity - the CPU usage is steady at 100%.
More comments below ..
> -----Original Message-----
> From: Aaron Bannert [mailto:[EMAIL PROTECTED]
[SNIP]
>
> I can't imagine why sleeping would consume 20% of your CPU when the
> server is idle. Perhaps you should look into the scalability of your
> thread library. On what kind of system are you seeing this problem
> (hardware/OS/rev/etc)?
I'm using MxN threads on HP-UX 11.23 - running on a IA64 madison chip
(1-way). I think the problem was because my build was using semop's in some
places even if pthread_mutex were available. AIUI, pthread_mutex performance
(for process-wide locks) is better than semop performance.
-Madhu
