| From: | "Jonah H(dot) Harris" <jonah(dot)harris(at)gmail(dot)com> |
|---|---|
| To: | "Jim C(dot) Nasby" <decibel(at)decibel(dot)org> |
| Cc: | "Heikki Linnakangas" <heikki(at)enterprisedb(dot)com>, Dimitri <dimitrik(dot)fr(at)gmail(dot)com>, "PostgreSQL Performance" <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: Filesystem Direct I/O and WAL sync option |
| Date: | 2007-07-09 20:46:32 |
| Message-ID: | 36e682920707091346w49824ac6x65c8adddbaa0ef7@mail.gmail.com |
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| Lists: | pgsql-performance |
On 7/9/07, Jim C. Nasby <decibel(at)decibel(dot)org> wrote:
> BTW, it might be worth trying the different wal_sync_methods. IIRC,
> Jonah's seen some good results from open_datasync.
On Linux, using ext3, reiser, or jfs, I've seen open_sync perform
quite better than fsync/fdatasync in most of my tests. But, I haven't
done significant testing with direct I/O lately.
--
Jonah H. Harris, Software Architect | phone: 732.331.1324
EnterpriseDB Corporation | fax: 732.331.1301
33 Wood Ave S, 3rd Floor | jharris(at)enterprisedb(dot)com
Iselin, New Jersey 08830 | http://www.enterprisedb.com/
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