platform/kvm: prioritize less-recently-used vCPUs for stealing #11569
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To minimize vCPU stealing between threads, prioritize stealing vCPUs that have been least recently used. This avoids taking a vCPU from a thread that is likely to use it again soon, reducing the overall number of steal operations. cpu: Intel(R) Xeon(R) W-2135 CPU @ 3.70GHz Before: BenchmarkReusingVCPU-12 419172 15074 ns/op After: BenchmarkReusingVCPU-12 665013 8799 ns/op PiperOrigin-RevId: 738607537
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platform/kvm: prioritize less-recently-used vCPUs for stealing
To minimize vCPU stealing between threads, prioritize stealing vCPUs that have
been least recently used. This avoids taking a vCPU from a thread that is
likely to use it again soon, reducing the overall number of steal operations.
cpu: Intel(R) Xeon(R) W-2135 CPU @ 3.70GHz
Before:
BenchmarkReusingVCPU-12 419172 15074 ns/op
After:
BenchmarkReusingVCPU-12 665013 8799 ns/op