[Xen-users] Overhead in Driver Domain during I/O operations

[teabe <teabetab@xxxxxxxxx>]

Hi,
I am a student working on xen 4.2 . I am monitorint the overhead in 
Driver Domain (dom0) when a Vm is having network activities (recieving 
or sending packets). I noticed that CPU overhead changes in Domain0 for 
processing packets at a fixed rate under different packet sizes.  I am 
trying to get an explaination to this. I think it is because the of the 
grant page copy. Can someone help me to understand this variation of 
overhead with different packet sizes. Your help will be welcome.
Thank you.

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