random I/O

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От Willy-Bas Loos
Тема random I/O
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Msg-id BANLkTiniKM2tefoBjApkVWbEKdRmwOZ-uA@mail.gmail.com
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Список 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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