| From: | Mark Kirkwood <markir(at)paradise(dot)net(dot)nz> |
|---|---|
| To: | Gavin Sherry <swm(at)linuxworld(dot)com(dot)au> |
| Cc: | David Boreham <david_list(at)boreham(dot)org>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: ice-broker scan thread |
| Date: | 2005-11-29 04:45:17 |
| Message-ID: | 438BDCDD.40600@paradise.net.nz |
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| Lists: | pgsql-hackers |
Gavin Sherry wrote:
>
> The paper I linked to seemed to suggest that they weren't using async IO
> in 9.2 -- which is fairly old. I'm not sure why the authors didn't test
> 10g.
>
There have been async io type parameters in Oracle's init.ora files from
(at least) 8i (disk_async_io=true IIRC) - on Solaris anyway. Whether
this enabled real or simulated async io is probably a good question - I
recall during testing turning it off and seeing kio()? or similar type
calls become write()/read() in truss oupout.
regards
Mark
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