[imp] Ooomph for IMP

Simon Matthews simon@paxonet.com
Thu, 25 Apr 2002 09:35:06 -0700


Can I ask if those who are happy with IMP's speed are using Maildir 
mailboxes and those who feel it is too slow are using "Unix style" mailbox 
files?

My personal opinion is that the speed to open up the inbox the first time 
is acceptable, but the speed to open an email or go back to the inbox is 
rather poor. We use UW-IMAP. Our IMAP server is on another machine, but it 
is rather underpowered.

Simon

At 03:34 PM 4/25/02 +0100, Henry Blackman wrote:
>Indeed, I didn't mention I use PHP accelerator.  I find, on our IMP
>webserver, it doesn't make a dramatic difference, but it is noticable
>(just).  I do find it very useful on our corporate Intranet; it makes a
>difference of about 800%.  Great stuff.
>
>Henry
>
>----- Original Message -----
>From: "Edward Wildgoose" <Edward.Wildgoose@FRMHedge.com>
>
>
>No one is mentioning PHP accelerators?  How many are using something like
>PHP Accelerator?
>
>I find that it makes quite a big difference with responsiveness for my Nuke
>& IMP site, but I don't have enough users to measure the performance
>increase.  Many users using PHP Accelerator or Zend Accelerator (or any of
>the other fine products!) find it gives a pretty good speedup
>
>-----Original Message-----
>From: Ramon Kagan [mailto:rkagan@YorkU.CA]
>
>HI,
>
>I've been able to run 400 users on a PIII 500 with 256 Mb of RAM will
>response times of 5 sec or less.  The machine was running imap, junkfilter
>and otherwise.
>
>As for our official setup.  We have 40000 users, 10000 logins per day,
>inboxes up to 900 MB running on 3 x Dual PIII866 with 1.5 GB memory.  This
>will be increased by adding two Dual PIII 1.3 GHz with 2 GB in the near
>future, since our user base will increase to 50000 and logins should
>increase to 15000.  In all of this we still maintain an average response
>time of less than 4.5 sec and usually in the 3.5 to 3.8 range.  Overall
>our servers are completing between 500000 and 800000 requests per day.
>
>I would look at your usage and base that on my two setups above.  Figure
>out where you fit in this category to determine your needs.
>
>Ramon Kagan
>York University, Computing and Network Services
>Unix Team -  Intermediate System Administrator
>(416)736-2100 #20263
>rkagan@yorku.ca
>
>On Thu, 25 Apr 2002, Kevin Myers wrote:
>
> > On Thu, 25 Apr 2002 08:14:23 -0400 (EDT), Ramon wrote:
> >
> > >How many users? How many logins per day?  How big are the mailboxes?
> >
> > Mmm. Well let's say 15 users, with an average inbox size of 5Mb, in mbox
> > format, and 10 other folders, each holding 5Mb, 10 users logging in in the
> > morning and checking their mail every 5 minutes throughout the day, the
> > other 5 users only logging in occasionally.
> >
> >
>
>
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