Re: Standalone mode & performance

At 10:45 PM +0200 7/8/08, Sasa wrote:

>  Hi, I use Qpopper 4.0.9 on Fedora Core 5 and hardware resource are:
>
>  CPU: Intel Xeon 3.00 GHz
>  Memory: 3 GB RAM
>  Disk: two hard disk from 72.8 GB/10.000 RPM/WIDE ULTRA320 SCSI in RAID 1
>
>  I have about 700 users and from a few days I have a dramatic 
> perfomace problem because in some hours the queue increase in 
> excess mode and I have more 800 mails in spool directory !I use 
> qpopper in standalone mode and I use -s -R options:
>
>  [root@mail ~]# ps -ax|grep popper
>  19147 ?        S      0:00 /usr/local/sbin/popper -s -R
>
>  ..if popper service is stopped the queue are emptied in a few minutes.
>  I have read the documentation about 'Perfomance' but I haven't 
> solution for my problem, What can I do to solve my problem ?
>  Thanks in advance.

When you say you are experiencing "queue increase" you mean that 
incoming mail builds up and is not delivered?

Is your system CPU-limited, memory-limited, or I/O-limited?  That is, 
if you use any kind of performance monitor, even just 'top', do you 
see high load average and no idle CPU?  Or, are you seeing excessive 
pageouts?

Also, have you tried enabling server mode?  As long as your users 
don't access their mail using any sort of local program, it should be 
OK.  You can try also setting fast-update.  See the "Performance" and 
"Server Mode" text in the GUIDE.pdf file.

-- 
Randall Gellens
Opinions are personal;    facts are suspect;    I speak for myself only
-------------- Randomly-selected tag: ---------------
Experience is that marvelous thing that enables you recognize a
mistake when you make it again.