| From: | Robert Lor <Robert(dot)Lor(at)Sun(dot)COM> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Tatsuo Ishii <ishii(at)sraoss(dot)co(dot)jp>, pgsql-hackers(at)postgresql(dot)org, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Sun Donated a Sun Fire T2000 to the PostgreSQL |
| Date: | 2006-07-24 03:34:25 |
| Message-ID: | 44C43FC1.4050002@sun.com |
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| Lists: | pgsql-hackers pgsql-performance |
Tom Lane wrote:
>Hmmm ... AFAICS this must mean that flushing the WAL data to disk
>at transaction commit time takes (most of) 20 msec on your hardware.
>Which still seems high --- on most modern disks that'd be at least two
>disk revolutions, maybe more. What's the disk hardware you're testing
>on, particularly its RPM spec?
>
>
I actually ran the test on my laptop. It has an Ultra ATA/100 drive
(5400 rpm). The test was just a quickie to show some data from the
probes. I'll collect and share data from the T2000 server later.
Regards,
-Robert
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