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Re: *CLOSED* softirq stats for a VE [message #10837 is a reply to message #10833]

Mon, 05 March 2007 15:50

dev
Messages: 1693
Registered: September 2005
Location: Moscow

Senior Member

No, this patch doesn't help. It's just make accounting more accurate (i.e. improves precision of accounting).

Look, the problem is the following. Imagine that someone
does a network flood at your host.
It takes a significant CPU time to determine to which VE (if any at all) these packets are going to. And this time is not accounted to the VE. That's the problem. The same for IRQ. IRQ doesn't know anything about whom it is reading packets for. So IRQ time can not be accounted to the VE.

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[Message index]

		CLOSED softirq stats for a VE By: Pradeep Padala on Thu, 15 February 2007 20:17
		Re: softirq stats for a VE By: Vasily Tarasov on Fri, 16 February 2007 07:41
		Re: softirq stats for a VE By: dev on Mon, 19 February 2007 21:07
		Re: CLOSED softirq stats for a VE By: Pradeep Padala on Mon, 05 March 2007 15:07
		Re: CLOSED softirq stats for a VE By: dev on Mon, 05 March 2007 15:50
		Re: CLOSED softirq stats for a VE By: Pradeep Padala on Mon, 05 March 2007 19:47
		Re: CLOSED softirq stats for a VE By: dev on Tue, 06 March 2007 08:06
		Re: CLOSED softirq stats for a VE By: Pradeep Padala on Tue, 06 March 2007 14:17
		Re: CLOSED softirq stats for a VE By: dev on Tue, 06 March 2007 15:06
		Re: CLOSED softirq stats for a VE By: Pradeep Padala on Tue, 06 March 2007 15:53

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