| From: | Shaun Thomas <sthomas(at)optionshouse(dot)com> |
|---|---|
| To: | David Boreham <david_list(at)boreham(dot)org> |
| Cc: | <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: HT on or off for E5-26xx ? |
| Date: | 2012-11-08 13:58:31 |
| Message-ID: | 509BBA87.3090400@optionshouse.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
On 11/07/2012 09:16 PM, David Boreham wrote:
> bash-4.1$ /usr/pgsql-9.2/bin/pgbench -T 600 -j 48 -c 48
Unfortunately without -S, you're not really testing the processors. A
regular pgbench can fluctuate a more than that due to writing and
checkpoints.
For what it's worth, our X5675's perform about 40-50% better with HT
enabled. Not the 2x you might expect by doubling the amount of
"processors", but it definitely didn't make things worse.
--
Shaun Thomas
OptionsHouse | 141 W. Jackson Blvd. | Suite 500 | Chicago IL, 60604
312-444-8534
sthomas(at)optionshouse(dot)com
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