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authorIgor Mammedov <imammedo@redhat.com>2014-12-01 17:29:25 +0000
committerPaolo Bonzini <pbonzini@redhat.com>2014-12-04 15:29:10 +0100
commitd4ae84a02bc65cec29608bc417a969fc2ec75449 (patch)
treefdf2e5f189783ca5a47407c5a64dbea7f243e86a /virt
parent7f379cff11fb9e00e0ff9eff8fbc39ddfd4b1bec (diff)
downloadlinux-d4ae84a02bc65cec29608bc417a969fc2ec75449.tar.gz
kvm: search_memslots: add simple LRU memslot caching
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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