kvm: search_memslots: add simple LRU memslot caching

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In typical guest boot workload only 2-3 memslots are used
extensively, and at that it's mostly the same memslot
lookup operation.

Adding LRU cache improves average lookup time from
46 to 28 cycles (~40%) for this workload.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Igor Mammedov 2014-12-01 17:29:25 +00:00 • committed by Paolo Bonzini

parent 7f379cff11

commit d4ae84a02b

1 changed files with 10 additions and 2 deletions

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include/linux/kvm_host.h

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