| From: | Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp> |
|---|---|
| To: | kunle(at)ogun(dot)stanford(dot)edu |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Pgbench Performance on PGSQL |
| Date: | 2001-07-22 11:09:52 |
| Message-ID: | 20010722200952Q.t-ishii@sra.co.jp |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
> I notice from your postings on the PGSQL-hackers archives that you have been
> experimenting with PGSQL and Pgbench. I have not been able to get PGSQL to
> scale on multiple processors. Tom Lane says this is due to the
> implementation of spin-locks. Have you made any fixes or additions to PGSQL
> to improve scalability on multiple processors?
No.
> Is there anything else I
> should try?
The only thing I noticed to increase the performance so far is extend
the deadlock_timeout paramterter.
BTW, wal_sync_method parameter seems also impact the performance. I'm
not sure what kind of platform you are using, but from my experience
open_sync is the best for Unix, while fdatasync is good for Solaris.
--
Tatsuo Ishii
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