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Re: ice-broker scan thread

From: Martijn van Oosterhout <kleptog(at)svana(dot)org>
To: David Boreham <david_list(at)boreham(dot)org>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: ice-broker scan thread
Date: 2005-11-29 17:52:18
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
On Tue, Nov 29, 2005 at 10:28:57AM -0700, David Boreham wrote:
> Actually, after reading up on the current state of things, I'm not sure you
> can even get POSIX aio on top of kernel aio in Linux. There are also a
> few limitations in the 2.6 aio implementation that might prove troublesome:
> for example it only works with O_DIRECT.

Which is bizarre because it's semantically equivalent to having a
seperate thread doing the read() and sending you a signal when it's
done. What I'm thinking of testing is a join across two large table so
there is actually more than one outstanding request at a time. But it's
irritating to have to code to a special api...

Have a nice day,
Martijn van Oosterhout   <kleptog(at)svana(dot)org>
> Patent. n. Genius is 5% inspiration and 95% perspiration. A patent is a
> tool for doing 5% of the work and then sitting around waiting for someone
> else to do the other 95% so you can sue them.

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