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Re: ioacct interpretation and unit [message #36082 is a reply to message #36076]

Wed, 20 May 2009 11:53

maratrus
Messages: 1495
Registered: August 2007
Location: Moscow

Senior Member

Hi,

to get full information you'd better look through kernel sources Smile

I doubt that all of the output numbers help you very much but I'd like to explain a little bit "dirty" and "write" numbers' meaning.

Writing to disk might be divided into two phases: writing to page and then writing to disk. "dirty" and "write" fields of /proc/bc/$VEID/ioacct output correspond to the former and to the latter phases.
So, if a "dirty" field is continuously growing and "write" field is not (or much slower that "dirty") this means that i/o scheduler doesn't allow this particular VE to write to disk.

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[Message index]

		ioacct interpretation and unit By: Atosboy on Tue, 19 May 2009 15:29
		Re: ioacct interpretation and unit By: maratrus on Wed, 20 May 2009 11:53
		Re: ioacct interpretation and unit By: Atosboy on Tue, 26 May 2009 13:32

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