while upgrading a kvm virtualization cluster from c6.4 to c6.5
and i am no longer able to control the migration speed.
in c6.4 the default speed was the maximum bandwidth (1g in my case)
and the actual migration speed was about 100MB/s.
now in c6.5 the actual migration speed dropped down to about
25MB/s – 50MB/s, it varies and sometimes during migration of huge machines (36GB) i was at 100MB/s, but only for seconds.
i tried also to set speed using this command:
virsh migrate-setspeed –bandwidth 1000
but it seems it has no affect, i remember in c6.3 the default migration speed was 33% of total bandwidth and at that time the above command worked and 100% were used during migration.
can anyone confirm this ??