Slow IO and high load on VMWare/Cent

VMNewbie

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Nov 7, 2011
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After installing cpanel on a new/clean vmware guest machine with a clean install of Centos 5.7 64bit we have had numerous problems to the point where the server is unusable. Copying a single 2.4gb backup file from one directory to another on the same disk took over an hour and spikes the server load to 3-9+. The slow copy and load spikes only happens after cPanel is installed.

We have tried guest machines that use the SCSI and IDE emulation, different size partitions/RAM/CPU/etc. iostat showed a MB_read/s of 1.2 and %iowait of 20-30+ during the load spike. On the first few guest machines the SSH login took 2+ minutes after entering the password to give a command prompt.

Any suggestions?
 
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VMNewbie

Registered
Nov 7, 2011
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I am trying to do a rsync from one directory to another (on the same disk) and am only getting 120k/sec transfer. Something is clearly wrong and i can't find it.

The host machine is running Centos 64bit, the guest OS is the same.
 

cPanelTristan

Quality Assurance Analyst
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Oct 2, 2010
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somewhere over the rainbow
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Could you please open up a ticket using the link in my signature and post the ticket number here? If this is only happening upon installing cPanel as indicated, we would want to check there isn't some incompatibility on the machine with that installation. The first thing that comes to mind would be selinux being enabled when cPanel doesn't support it:

Code:
sestatus
Also, to ensure this isn't the case, you aren't using any type of NAT-based setup, which we do not currently support?