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Re: [Xen-devel] event TRC_MEM_PAGE_GRANT_TRANSFER

To: Rob Gardner <rob.gardner@xxxxxx>, Cesar Fernandes <darkvib@xxxxxxxxx>
Subject: Re: [Xen-devel] event TRC_MEM_PAGE_GRANT_TRANSFER
From: Keir Fraser <keir@xxxxxxxxxxxxx>
Date: Tue, 23 Jan 2007 18:57:47 +0000
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On 23/1/07 17:51, "Rob Gardner" <rob.gardner@xxxxxx> wrote:

> Yeah I noticed that I/O count has not been working lately in xenmon but
> haven't had a chance yet to see why. The TRC_MEM_PAGE_GRANT_TRANSFER
> event is being "logged" but the reason it doesn't show up in the trace
> buffer may be because that event is never actually happening. It seems
> that there has been some change in the mechanism used to move I/O pages
> between domains.

Grant transfers are no longer used to move network data from netback to
netfront (except for backward compatibility with old netfront drivers).

 -- Keir


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