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: | 20051129175217.GG31333@svana.org |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
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> http://svana.org/kleptog/
> 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.
From | Date | Subject | |
---|---|---|---|
Next Message | Qingqing Zhou | 2005-11-29 18:03:32 | Re: ice-broker scan thread |
Previous Message | Jeffrey W. Baker | 2005-11-29 17:35:44 | Re: ice-broker scan thread |