Benchmarks are worthless - your apps count.
Benchmark your applications. Period.
i dont think thats completely true as we would like to benchmark the 6
core (dunnington), intel 4 core (harpertown) vs AMD shanghai, AMD
Barcelona – as the disk / networking devices are handled by dom0, those
elements won’t be as applicable as we’re looking mostly at the hardware
enhancements in relation to page fault handling and TLB look-up speed,
that the AMD Shanghai boasts about.
We wouldn't be benching I/O as that would increase the variability,
which is why you wouldn't bother doing it; those kind of
microbenchmark's would be applicable more for physical to virtualization
microbencharks for linear regression calculations like:
U1/dom0 = c0 + c1 * M1/1 + c2 * M1/2 + ... + c11 * M1/11 etc
We're only interested in really the hardware benefits of the
virtualization techniques in relation to the different cpu type. We're
not interested exactly in the fact that it's virtualized, but knowing
it's virtualized and process x has caused an interrupt, which has
resulted in a page fault, which has made a TLB reference, which has
resulted in paging etc, and has taken X period. If the Core improvements
have said that page fault handles are processed quicker and TLB
references have increased, then you should notice a big difference
between VM1 in one environment without those to VM2 running with those
hardware enhancements.
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