increasing memory of Dom0 did not effect ...
increasing vCPU of Dom0 did not effect (actually not all vcpu already used for it but i just want to try )
I run stress*ng for load vms memory but did not effect
No pinning or numa config need because single cpu and shared L3 cache for all cores
Also MTU size is not effecting its working same with 1500 and 9000 MTU
I saw and change tcp_limit_output_bytes but did not help me
Only what effect is changing the hardware
My Intel servers are Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz --> 0.9 Gbit/s per migration
My AMD servers are AMD EPYC 7502P 32-Core Processor --> 1.76 Gbit/s per migration
Do you have any advise ?