Re: SLow server
Er, no DMA in the kernel?
----- Original Message -----
From: "Maarten Vink" <email@example.com>
To: "Peter Billson" <firstname.lastname@example.org>; <email@example.com>
Sent: Monday, February 11, 2002 3:46 PM
Subject: Re: SLow server
> Try vmstat and check for disk I/O when users are accessing their
> ----- Original Message -----
> From: "Peter Billson" <firstname.lastname@example.org>
> To: <email@example.com>
> Sent: Monday, February 11, 2002 9:40 PM
> Subject: SLow server
> > Hello *,
> > Got a weird server problem that I could use some pointers where to
> I have a PIII 600 Dell server with 1 IDE HD and 128Mb or RAM running
> 2.2.19Pre17 potato. The server is lightly loaded - basically IMAP and
> Web mail for about 20 users.
> > The problem is the thing is *Slow*. The users keep pretty large
> mailboxes (mbox not maildir) and use Outlook to access them but that
> seem to account for the slowness. Top shows plenty of free memory (74Mb
> buffers, 16Mb cached), an idle CPU
> > (90-95%) and vmstat shows little disk activity and no swapping but the
> load will shoot up to 7 or 8 while someone opens their mailbox.
> > Any disk I/O seems to drag (i.e. 'less /var/log/messages') even when
> nothing else is going on. I'm stumped. Any suggestions on what to look at
> would be helpful.
> > Pete
> > --
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