| *SOLVED* Question about cpuunits comment on swsoft forum [message #9410] |
Sun, 31 December 2006 17:22  |
rickb
Messages: 368
Registered: October 2006
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Senior Member |
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Hi, I found this post on the swsoft virtuozzo forum- OVZ and VZ share the same architecture so I feel the question/answer is relevant to openvz as well. I see the person who offered an answer is from Herndon, VA so I am assuming he works for swsoft.
Is his answer about cpuunits correct?
http://forums.sw-soft.com/showthread.php?s=05fab1a5a307d51be 4c6ae9d05bb260a&threadid=38376
The ability for a VE to saturate the disk i/o is a problem I wrestly with daily, so I am interested in what this guy is saying. Basically he is saying a low cpuunits could cause the disk performance to suffer. I'm not sure if this is true because if a VE is not being selected by the scheduler very often (condition from low cpuunits), would the disk be "waiting" or "busy" as seen by other VEs? Its my understanding that a VE can use its cputime to hammer the disk all it wants, but if the cpuunits is very low like in the post, the VE would have no time to hammer the disk and thus effect other VEs.
Long winded, I know. But, looking for some insight.
Rick
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Common Terms I post with: http://wiki.openvz.org/Category:Definitions
UBC. Learn it, love it, live it: http://wiki.openvz.org/Proc/user_beancounters
[Updated on: Tue, 09 January 2007 06:25] by Moderator Report message to a moderator |
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