[horde] Problem of slow with server-side sorting

[Jose Luis Marin Perez]

Thanks for yor reply.

This is the result of the free command: 

             total       used       free     shared    buffers     cached
Mem:          1010        988         21          0         35        211
-/+ buffers/cache:        742        268
Swap:         2000        139       1860

On the server we have the following services: 

 Email: Qmail +  Vpopmail + IMAP + Simscan + SpamAssassin + ClamAV  (Over 4500 email accounts) 
 Web: Apache + PHP 
 Database: MySQL

As may increase the RAM?
You should also add a CPU?

Thanks

Jolumape


> Date: Wed, 3 Jun 2009 19:02:49 -0400
> From: sd at msu.edu
> To: jolumape_al at hotmail.com
> CC: horde at lists.horde.org
> Subject: RE: [horde] Problem of slow with server-side sorting
> 
> Quoting "Jose Luis Marin Perez" <jolumape_al at hotmail.com>:
> 
> >
> >
> > Thanks for your answers.
> >
> > These hardware features:
> >
> > ML370 G4
> > Xeon 3.6 GHz CPU
> > 1 GB RAM
> > Hard Drive 300GB - Raid 1 - EXT3
> >
> > When accessing one of these accounts capture a sample of the TOP command
> >
> > top - 09:37:51 up 4 days, 15:26,  2 users,  load average: 5.07, 4.85, 4.79
> > Tasks: 146 total,   1 running, 145 sleeping,   0 stopped,   0 zombie
> > Cpu(s): 46.5% us, 19.8% sy,  0.0% ni, 19.8% id, 13.9% wa,  0.0% hi,  0.0% si
> > Mem:   1034512k total,  1008464k used,    26048k free,    55592k buffers
> > Swap:  2048276k total,   143232k used,  1905044k free,   516016k cached
> >
> > On our server there are about 5000 mail accounts with more than 1000  
> > messages per account.
> >
> > As can enable an option _imp_hook_msglist_format and that benefits  
> > could give me to solve my problem?
> >
> > Regarding the questions of Steve Devine:
> >
> > There are 3 webmails configured for accessing the IMAP server and  
> > have approximately 200 to 300 concurrent users
> >
> > MAXPERIP = 256
> > MAXDAEMONS = 40
> >
> > Thanks
> >
> > Jolumape
> 
> Looks like your RAM is used up and your running into swap. Get more memory.
> Is IMAP the only thing running on this machine?
> >
> >> Date: Wed, 3 Jun 2009 10:55:17 +0200
> >> From: rsalmon at mbpgroup.com
> >> To: jolumape_al at hotmail.com
> >> CC: horde at lists.horde.org
> >> Subject: Re: [horde] Problem of slow with server-side sorting
> >>
> >> Jose Luis Marin Perez <jolumape_al at hotmail.com> a écrit :
> >>
> >> >
> >> > Thank you very much for your replies.
> >> >
> >> > I am clear that the problem of slowness is caused by Courier-Imap.
> >>
> >> It could be your hardware or filesystem.
> >> Check the load of your server when accessing your mailbox, is there a
> >> proc eating the CUP or is it doing nothing ?
> >>
> >>
> >> Here, we use courier-imap 4.3. Maildirs are stored on a RAID5(PERC
> >> 5/i) disk (ext3).
> >> We don't have many users here, but all of them have thousands of
> >> emails (too many!) in their mailbox (Some of them still don't (or
> >> don't want to) know that they can create sub-folders :-()
> >>
> >> I've just tried sorting by date/thread/... folders containing about
> >> 5000 emails and it took less than 5 seconds. The first access to the
> >> folder takes about 10s though.
> >>
> >> The hook _imp_hook_msglist_format is also enabled, so courier-imap has
> >> to read every emails.
> >>
> >>
> >> Ronan.
> >
> > _________________________________________________________________
> > Discover the new Windows Vista
> > http://search.msn.com/results.aspx?q=windows+vista&mkt=en-US&form=QBRE
> 
> 
> 
> Steve Devine
> Email & Storage
> Academic Technology Services
> Michigan State University
> 
> 313 Computer Center
> East Lansing, MI 48824-1042
> 1-517-432-7327
> 

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