device: 0.956
instruction: 0.937
graphic: 0.899
network: 0.881
vnc: 0.760
boot: 0.683
socket: 0.667
semantic: 0.638
mistranslation: 0.587
other: 0.417
assembly: 0.311
KVM: 0.004

failed to migrate using multifd with multifd-channels larger than 2
Description of problem:
try to using multifd live migration on QEMU v8.0.0 using multifd channels larger than 2, but failed.
Steps to reproduce:
1. start source / dest qemu vm
2. migrate_set_capability multifd on && migrate_set_parameter multifd-channels 8

then live migration will failed