Its not unheard of that an HP ILO (Integrated Lights Out) can become sick and slow down to a crawl. When this occurs, a restart of the ILO is in order, which is easily accomplished via the ILO cli interface. Note that you need to make sure that that you have enabled ssh access in ilo.

The steps to reset an ilo via ssh are below.

</>hpiLO-> cd /map1
status=0
status_tag=COMMAND COMPLETED

</map1>hpiLO-> reset
status=0
status_tag=COMMAND COMPLETED
Resetting iLO.

CLI session stopped

Additional Resources:

http://fatmin.com/2011/06/13/redirect-linux-console-to-hp-ilo-via-ssh/

http://www.thevirtualway.it/en/?p=985

http://setaoffice.com/2010/07/17/connecting-to-hp-ilo-using-the-command-line/