Re: Asynchronous I/O Support
Martijn van Oosterhout <kleptog@svana.org>
From: Martijn van Oosterhout <kleptog@svana.org>
To: Mark Kirkwood <markir@paradise.net.nz>
Cc: NikhilS <nikkhils@gmail.com>, Luke Lonergan <llonergan@greenplum.com>, Raja Agrawal <raja.agrawal@gmail.com>, pgsql-hackers@postgresql.org
Date: 2006-10-18T12:17:54Z
Lists: pgsql-hackers
On Wed, Oct 18, 2006 at 08:04:29PM +1300, Mark Kirkwood wrote: > >"bgwriter doing aysncronous I/O for the dirty buffers that it is > >supposed to sync" > >Another decent use-case? Good idea, but async i/o is generally poorly supported. > Is it worth considering using readv(2) instead? Err, readv allows you to split a single consecutive read into multiple buffers. Doesn't help at all for reads on widely areas of a file. Have a ncie day, -- Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/ > From each according to his ability. To each according to his ability to litigate.