| From: | Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pg(at)fastcrypt(dot)com, Josh Berkus <josh(at)agliodbs(dot)com>, Paul Tuckfield <paul(at)tuckfield(dot)com>, Anjan Dave <adave(at)vantage(dot)com>, Neil Conway <neilc(at)samurai(dot)com>, Dirk Lutzebäck <lutzeb(at)aeccom(dot)com>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Wierd context-switching issue on Xeon patch for 7.4.1 |
| Date: | 2004-04-22 04:44:07 |
| Message-ID: | 40874D97.5030401@familyhealth.com.au |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
> Yeah. I don't know a reasonable way to tune this number automatically
> for particular systems ... but at the very least we'd need to find a way
> to distinguish uniprocessor from multiprocessor, because on a
> uniprocessor the optimal value is surely 1.
From TODO:
* Add code to detect an SMP machine and handle spinlocks accordingly
from distributted.net, http://www1.distributed.net/source, in
client/common/cpucheck.cpp
Chris
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Bruce Momjian | 2004-04-22 04:56:15 | Re: Wierd context-switching issue on Xeon patch for 7.4.1 |
| Previous Message | Tom Lane | 2004-04-22 04:23:24 | Re: Wierd context-switching issue on Xeon patch for 7.4.1 |