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random write in xlog? - Mailing list pgsql-hackers

From	flyusa2010 fly
Subject	random write in xlog?
Date	December 8, 2010 02:54:49
Msg-id	AANLkTinFTPzuM3+CD0oRoAxsAGNK-S6dxnncCr7+f3_S@mail.gmail.com Whole thread Raw
Responses	Re: random write in xlog?
List	pgsql-hackers

Hi, folks,

I trace the running postgres, and I found that there are some randoms writes in xlog files!

To my impression, log file writing is always sequential, how come random writes happen?

Thanks in advance!

From: Fujii Masao
Date: 08 December 2010, 02:47:58
Subject: Re: To Signal The postmaster

From: Joachim Wieland
Date: 08 December 2010, 03:38:11
Subject: Re: directory archive format for pg_dump