email services make our server busy

M

mwhuen

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Joined
Mar 21, 2006
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15
email services make our server busy.

During office hour, we have many pop3 connections, and this make our server very busy.
From 10am-18pm, the loading is keep larger than 10.
In other hours, the loading is just 0.x

I found that there are around 100 POP3 connections when our server is very busy,
and the iowaiting loading is kept 9x%

How to solve it?
How can I tune email services to reduce the server loading?

Thank you.

Stanley
 
If they're truly pop3 services about all you can do is educate your users, as they're the ones checking their email so often.

Jeff
 
Sounds like you are not using dovecot. Dovecot uses maildir, while vm-pop3d uses mbox. mbox causes MUCH higher IO wait times on the server. We converted and noticed are servers loads are now nothing.
 
Last edited:
Thanks.

And I will open 110, 1100 and 11000 port for POP3,
how can I do with Dovecot?

Regards,

Stanley
 
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