On 06/15/2009 05:15 PM, Erik Jacobson wrote:
What is the host cpu type? On pre-Nehalem/Barcelona processors kvm has
poor scalability in mmu intensive workloads like kernel builds.
Thanks for getting back to me.
Today is pretty booked but I'm going to go find a Nehalem system and try to
run similar tests to compare. I'll post my results to this thread.
So if I understand what you're saying: best not to use kvm guests for build
servers with pre-Nehalem processors.
pre-Nehalem / pre-Barcelona, > 4 vcpus, yes.
Both systems I used were pre-Nehalem. Here is a cpuinfo snip from both
systems I tested on:
Yes, so I expect you're seeing contention on kvm->mmu_lock.
--
error compiling committee.c: too many arguments to function
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