Re: Easy read-heavy benchmark kicking around?
| От | Cosimo Streppone |
|---|---|
| Тема | Re: Easy read-heavy benchmark kicking around? |
| Дата | |
| Msg-id | 45520C5C.8000705@streppone.it обсуждение исходный текст |
| Ответ на | Re: Easy read-heavy benchmark kicking around? ("Merlin Moncure" <mmoncure@gmail.com>) |
| Список | pgsql-performance |
Merlin Moncure wrote: > On 11/8/06, Markus Schaber <schabi@logix-tt.com> wrote: >> Hi, Brian, >> >> Brian Hurt wrote: >> >> > So the question is: is there an easy to install and run, read-heavy >> > benchmark out there that I can wave at them to get them to fix the >> > problem? >> >> For sequential read performance, use dd. Most variants of dd I've seen >> output some timing information, and if not, do a "time dd >> if=/your/device of=/dev/null bs=1M" on the partition. > > we had a similar problem with a hitachi san, the ams200. Their > performance group refused to admit the fact that 50mb/sec dd test was > a valid performance benchmark and needed to be addressed. > > [...] > > oh, the unit also lost a controller after about a week of > operation...the unit being a HITACHI SAN, the AMS200. > > any questions? Yes, one. What was that unit? ;-) -- Cosimo
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