Maybe run atop or other tools to see where your bottleneck is?

Cheers,
Sebastian

On 04.12.2012, at 16:15, "Rajesh M" <[email protected]> wrote:

>> hi
>> 
>> i have a server with around 6000 mail boxes
>> 
>> it is a dual processor quad core with 4 gb ram
>> centos 5 with qmail toaster
>> 
>> it contains around 3.5 terrabytes of data
>> 
>> the data is spread over the 2 nrs 2 tb drives
>> 
>> about half the mailboxes have the normal path ie /home/vpopmail/domains/
>> 
>> and the other half has path to the second drive
>> (i changed the path in the mysql database for around half mailboxes to
>> point to the second drive)
>> 
>> the machine is accessed by pop / imap / smtp
>> 
>> this was working fine till 2 days ago
>> 
>> i noted that users were not cleaning up the trash folders and space
>> utilization had gone to 90%. So i ran the qmail-clean-trash script which
>> cleaned up a lot of trash data. usage is arond 85 % .
>> 
>> this was done in the weekend - ie 2 days ago
>> 
>> now since monday onwards ie the local queue is piling up and delivering
>> very slowly.
>> 
>> the email traffic send+receive is around 250,000 (around 20 gb of data)
>> emails per day  with most of the emails being delivered locally.
>> 
>> i have to keep firing perl qmhandle -a -- to get the local emails delivred
>> 
>> but still it is very slow
>> 
>> can somebody let me know the reason for this sudden slow delivery of
>> emails
>> 
>> rajesh
>> 
>> 
>> 
>> 
>> 
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> 
> 
> in addition to the above information
> 
> i have kept concurrencyincoming - 400, concurrencylocal - 300,
> concurrencyremote - 200
> 
> server load goes as high 200 sometimes
> 
> also please let me know how i can spread the data / load between two or
> more servers. Any solutions for the same ?
> 
> rajesh
> 
> 
> 
> 
> 
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