Re: x206-x225
От | Joost Kraaijeveld |
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Тема | Re: x206-x225 |
Дата | |
Msg-id | 1142063378.6634.13.camel@localhost обсуждение исходный текст |
Ответ на | Re: x206-x225 (Richard Huxton <dev@archonet.com>) |
Ответы |
Re: x206-x225
|
Список | pgsql-performance |
On Fri, 2006-03-10 at 13:40 +0000, Richard Huxton wrote: > Your ATA disk is lying about disk caching being turned off. Assuming > each insert is in a separate transaction, then it's not going to do > 10,000 / 6 = 1667 transactions/sec - that's faster than it's rotational > speed. Could you explain the calculation? Why should the number of transactions be related to the rotational speed of the disk, without saying anything about the number of bytes per rotation? -- Groeten, Joost Kraaijeveld Askesis B.V. Molukkenstraat 14 6524NB Nijmegen tel: 024-3888063 / 06-51855277 fax: 024-3608416 e-mail: J.Kraaijeveld@Askesis.nl web: www.askesis.nl
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