Ricardo Martins wrote:
Thanks for the answers...
I am creating an environment with multiple virtual servers, my main
concern is whether I have a noticeable
loss of performance because of this problem, if the answer is yes I
will find another solution for my host server.
For server workloads it is less of a concern, that's why this issue
hasn't been addressed for such a long time. Usually server workloads are
not restricted by cache size or cache access patterns, so you will not
notice a slowdown. Please note that QEMU does not restrict the actual
cache size of the CPU (which will be fully available to the guest), but
only the size _reported_ to the guest.
If you are still in doubt, you could do benchmarks with the default CPU
model and with -cpu host (maybe even with my patch) to determine whether
there is a difference.
Regards,
Andre.
--
Andre Przywara
AMD-Operating System Research Center (OSRC), Dresden, Germany
Tel: +49 351 488-3567-12
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