Memory use

[Glenn Steen]

    [ The following text is in the "ISO-8859-1" character set. ]
    [ Your display is set for the "US-ASCII" character set.  ]
    [ Some characters may be displayed incorrectly. ]

On 17/11/05, Glenn Steen <glenn.steen at gmail.com> wrote:
> On 16/11/05, José Angel Blanco González <jose at treelogic.com> wrote:
> > In vmstat, si is always 0, so it is not using swap I suppose. The computer
> > is a mail server with 500 mail accounts, maybe ipopd  or imapd the bug??
> >
> How did you determine that MailScanner dropped in performance? Exactly
> what characteristic are you seeing a problem with?
>
> You'll have to run the vmstat for a bit to be sure there really is no
> swapping, and perhaps look into the sar command (think it's part of
> the sysstat rpm or something similar.... I ditched my last RH9 the day
> after the desupport notice.... (a while back:-), so my recollections
> of exact package details is faint, to say the least...)
> sar will help you (together with top) to determine if you have unusual
> CPU load, which might be an indicator.... For IO, find and use iostat
> in a similar way as you use vmstat.
>
> Until you have some facts, it's way to soon to start assigning blame
> to individual systems/processes:-).
>

Replying to myself.... how ... quaint...:)

If you use mbox format, or indeed if your users have huge
mailboxes.... they might be seeing a big lag at certain message
operations (and definitely when starting their client).
Do you really need to support POP?

--
-- Glenn
email: glenn < dot > steen < at > gmail < dot > com
work: glenn < dot > steen < at > ap1 < dot > se

------------------------ MailScanner list ------------------------
To unsubscribe, email jiscmail at jiscmail.ac.uk with the words:
'leave mailscanner' in the body of the email.
Before posting, read the Wiki (http://wiki.mailscanner.info/) and
the archives (http://www.jiscmail.ac.uk/lists/mailscanner.html).

Support MailScanner development - buy the book off the website!