[horde] IMAP disk I/O slow

[cron@odi.com.br]

Jaz,

I have a very small server, 1.2 athon 1GB RAM,  40 GB HD 80 pin 7200 rpm,
nothing fancy but i don't have performance problems running Apache(about 20
vhost), MySQL  + PostgreSQL and mailserver.

The only thing that gave me problems was the IMAP server and after swith
from  MBOX to MAILDIR format. Problemns are gone.

Angelo


----- Original Message ----- 
From: "Justin Zachor" <justinz at harbell.net>
To: <horde at lists.horde.org>
Sent: Wednesday, May 04, 2005 1:42 PM
Subject: Re: [horde] IMAP disk I/O slow


> Thanks Angelo,
>
> I upped to 512MB, which dropped 30 sec to 20 seconds. (this Inbox is
> 2000 messages/ ~100MB).
>
> What disks do you have, and how many? (stripe/raid? layout?)
>
> PS, the IDE cable is 80-pin not 40 as prev reported. I suppose although
> Ultra160 would be fast, the best disk I'm likely to get will still be
> only ~50MB/sec, so this isn't going to get me an order of magnatude.
>
> jaz
>
> >Jaz,
> >
> >Running linux fedora core 3
> >
> >Dont know why but on a amd 1.2 with 256 RAM is was taking about 60 seg
for
> >imp to open a inbox with 30 to 40 mb, with 512 it was taking about 5 sec
> >with 1 1GB ram it is less them 1 sec.
> >
> >Ângelo
> >
> >
> >>I'm looking for advice in improving IMAP folder performance via IMP on a
> >>small Win2K box with one IDE disk.
> >><snip>
> >>The system is a wimpy 1GHz P3 w/ 256MB, with a Maxtor D740X IDE (rated
> >>for 44MB/sec at OD & 24MB/sec at ID) which (via Dr. hardware) shows a
> >>respectable ~35MB/sec read and ~26MB/sec write, ~5.8ms access time. C:
> >>--> OS, cygwin, PHP, PEAR, and D: --> Apache, mysql, IMAP (apps and
data).
> >>
> >>
>
>