I've been reading through the thread on this one. I can't remember reading if your ldap and your qmail server share the same hardware. Anyways I had a similar problem with server load. From your top output what is using the highest amount of CPU time? Mine was with LDAP where I didn't have my indexes set correctly. So for every mail recieved it would have to do a full search!

Here are what my indexes look like:

index   objectClass     eq
index   uid,o,cn,mail,mailAlternateAddress   pres,eq
index   sn              eq

Here are some stats with my system:
8500 mail boxes, approximately 80,000 msgs/day. Load pretty much 0.1 to 0.3 for all mail servers and 0.0 for both ldap servers


Ben

I cannot see any problem in logs or in qmail-remote/local deliveries, the really problem is that although i can see x/500 in local and remote deliveries the queue/preprocceced is 30000/29800 more or less.

I am stressing de server in not real scenary and i can see that with a queue of 27000 injected emails, the queue preprocced at 600 email in one minute, or 10 email in one second.

a poor result ? i think yes, i put my ldap db with loggin 0 in memmory to test ldap benchmark, but no result...

the result is too poor.

this is a top of the server in stress situation.


11:30:25 up 1 day, 21:10, 2 users, load average: 8.49, 6.96, 24.35
133 processes: 126 sleeping, 7 running, 0 zombie, 0 stopped
CPU0 states: 3.3% user 9.2% system 0.0% nice 54.4% iowait 31.4% idle
CPU1 states: 3.0% user 10.4% system 0.0% nice 41.0% iowait 44.3% idle
Mem: 2077224k av, 1554276k used, 522948k free, 0k shrd, 464240k buff
407344k active, 735740k inactive
Swap: 3622636k av, 0k used, 3622636k free 654496k cached


Thanks all for yours time :)


César García. Dept. Sistemas, IdecNet S.A. Centro de Gestión de Red. Edificio IdecNet. C/Juan XXIII 44. E-35004, Las Palmas de Gran Canaria, Islas Canarias - España. Tfn: +34 828 111 000 Ext: 340

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