| From: | "Andrej Ricnik-Bay" <andrej(dot)groups(at)gmail(dot)com> |
|---|---|
| To: | "Scott Marlowe" <scott(dot)marlowe(at)gmail(dot)com> |
| Cc: | "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: file system and raid performance |
| Date: | 2008-08-07 21:57:39 |
| Message-ID: | b35603930808071457x40334261uad77dab2623f2757@mail.gmail.com |
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| Lists: | pgsql-performance |
2008/8/8 Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>:
> noatime turns off the atime write behaviour. Or did you already know
> that and I missed some weird post where noatime somehow managed to
> slow down performance?
Scott, I'm quite aware of what noatime does ... you didn't miss a post, but
if you look at Mark's graphs on
http://wiki.postgresql.org/wiki/HP_ProLiant_DL380_G5_Tuning_Guide
they pretty much all indicate that (unless I completely misinterpret the
meaning and purpose of the labels), independent of the file-system,
using noatime slows read/writes down (on average).
--
Please don't top post, and don't use HTML e-Mail :} Make your quotes concise.
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