[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] DomU vs Dom0 performance.
Hi Konrad, Thank you for the simple and wonderful explanation. Now I understand why the syscall micro-benchmark performs better on domU than the dom0. But I am still confused about 'memory bandwidth' micro-benchmark performance. Memory bandwidth micro-benchmark
test will cause a page fault when the page is accessed for the first time. I presume the PTE updates is the major reason for the performance degradation of the dom0. But after first few page faults, all the pages would be in the memory (Both dom0 and domU
have 4096M of memory and micro-benchmark uses < test_size * 3 i.e. 1000M * 3 in this case), then why does there is considerable amount of performance difference ? Thank you,
Sushrut. On 1 October 2013 10:24, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:
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