| From: | "Jonah H(dot) Harris" <jonah(dot)harris(at)gmail(dot)com> |
|---|---|
| To: | "Greg Stark" <greg(dot)stark(at)enterprisedb(dot)com> |
| Cc: | "Bruce Momjian" <bruce(at)momjian(dot)us>, "Greg Smith" <gsmith(at)gregsmith(dot)com>, "Julius Stroffek" <Julius(dot)Stroffek(at)sun(dot)com>, pgsql-hackers(at)postgresql(dot)org, "Dano Vojtek" <danielkov(at)gmail(dot)com> |
| Subject: | Re: Multi CPU Queries - Feedback and/or suggestions wanted! |
| Date: | 2008-10-24 03:31:13 |
| Message-ID: | 36e682920810232031w33e92517g69300a32a82d5293@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Oct 23, 2008 at 10:36 PM, Greg Stark
<greg(dot)stark(at)enterprisedb(dot)com> wrote:
> I couldn't get async I/O to work on Linux. That is it "worked" but performed
> the same as reading one block at a time. On solaris the situation is
> reversed.
Hmm, then obviously you did something wrong, because my tests showed
it quite well. Pull the source to iozone or fio.
> In what way is fadvise a kludge?
non-portable, requires more user-to-system CPU, ... need I go on?
--
Jonah H. Harris, Senior DBA
myYearbook.com
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