Re: Asynchronous I/O Support
От | Neil Conway |
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Тема | Re: Asynchronous I/O Support |
Дата | |
Msg-id | 1160936772.23293.13.camel@localhost.localdomain обсуждение исходный текст |
Ответ на | Re: Asynchronous I/O Support (Martijn van Oosterhout <kleptog@svana.org>) |
Ответы |
Re: Asynchronous I/O Support
Re: Asynchronous I/O Support Re: Asynchronous I/O Support |
Список | pgsql-hackers |
On Sun, 2006-10-15 at 19:56 +0200, Martijn van Oosterhout wrote: > Sure, I even implemented it once. Didn't get any faster. Did you just do something akin to s/read/aio_read/ etc., or something more ambitious? I think that really taking advantage of the ability to have multiple I/O requests outstanding would take some leg work. > Maybe one of these days I should work out if my current system supports > it, and give it another go... At least according to [1], kernel AIO on Linux still doesn't work for buffered (i.e. non-O_DIRECT) files. There have been patches available for quite some time that implement this, but I'm not sure when they are likely to get into the mainline kernel. -Neil [1] http://lse.sourceforge.net/io/aio.html
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