Cloudlinux Not Limiting I/O - Imap
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  1. Imagina
  2. 24.10.2013
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Causing Server to Halt
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  1. 24.10.2013 13:10:33
  2. # 1
Imagina Accepted Answer
Posts: 14
Joined: 24.10.2013
I have a big account 80GB that's is causing a 100% I/O problem with 3 imap proceses.  We had to disable the account.

The processes run like the user but are not being limited by Cloudlinux.

The Cloudlinux Kernel is the latest one:
Linux   2.6.32-458.18.1.lve1.2.39.el6.x86_64 #1 SMP Mon Sep 16 12:10:28 EEST 2013 x86_64 x86_64 x86_64 GNU/Linux

Cagefs is active for every account in the node.

The LVE for the user is not reporting any unusual but the thruth is other.

Let me know what else should i check or maybe is a bug in the System.

  1. 24.10.2013 13:10:42
  2. # 2
Igor Seletskiy Accepted Answer
Posts: 1194
Joined: 09.02.2010

We don\'t touch email processes at all.
If you want to limit IMAP processes, you will need to install experimental processes:

And run:

echo -n +/path/to/the/imap_process > /proc/lve/enter

To disable it:
echo -n -/path/to/the/imap_process > /proc/lve/enter

This is available only in the latest kernel, and this has to be executed on system start up.
  1. 24.10.2013 15:10:45
  2. # 3
Imagina Accepted Answer
Posts: 14
Joined: 24.10.2013
Ah Thanks, that explains a lot.

Seems like we have to solve the problem the old way :)!

This is an active production server where i\'m not very pleasant to execute an experimental feature like this.

We would wait for it to be mature enough.


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