=== libvirt-0001: virCPUx86UpdateLive() addedFeatures g_strv_contains O(F×A) per VM start/migration ===
N=100   k=100  : defective=0.092ms  fixed=0.004ms  speedup=24.8x
N=500   k=500  : defective=2.480ms  fixed=0.023ms  speedup=109.3x
N=1000  k=1000 : defective=10.408ms  fixed=0.051ms  speedup=206.1x
N=2000  k=2000 : defective=39.427ms  fixed=0.097ms  speedup=405.4x

=== libvirt-0002: x86ModelFromCPU() x86FeatureFind O(C×F) linear scan per feature per VM start ===
N=100   k=100  : defective=0.084ms  fixed=0.003ms  speedup=24.7x
N=500   k=500  : defective=2.146ms  fixed=0.020ms  speedup=105.2x
N=1000  k=1000 : defective=10.100ms  fixed=0.046ms  speedup=221.2x
N=2000  k=2000 : defective=39.049ms  fixed=0.097ms  speedup=402.3x

