| From: | Willy-Bas Loos <willybas(at)gmail(dot)com> |
|---|---|
| To: | pgsql-novice(at)postgresql(dot)org |
| Subject: | random I/O |
| Date: | 2011-05-05 15:28:10 |
| Message-ID: | BANLkTiniKM2tefoBjApkVWbEKdRmwOZ-uA@mail.gmail.com |
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| Lists: | pgsql-novice |
Hi,
It just occurred to me that it is not necessarily the case that reading the
indexes causes a lot of random I/O (on the index itself).
I mean, maybe the index is generally read sequentially and then, when
retrieving the data, there is a lot of random I/O. (which could be on a
different spindle..)
Can anyone tell me or point me to some info?
thx,
WBL
--
"Patriotism is the conviction that your country is superior to all others
because you were born in it." -- George Bernard Shaw
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