On 12/04/2012 08:58 AM, Rajesh M wrote:
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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i have htop installed but does not show any specific problem
one important point is that only local emails keep piling up. remote
emails are delivered quickly
rajesh
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There's apparently a bottleneck all right, apparently with writing to
the drives.
The qmail-clean-trash script isn't part of QTP. Can you post it here?
Might provide a hint.
You're running dovecot I presume?
--
-Eric 'shubes'
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