Re: [network performance question] only ~2Gbps throughput betweentwo linux guests which are running on the same host via netperf -tTCP_STREAM -m 1400, but xen can ac

Venkateswara Rao Nandigam
2014-06-06T08:25:16Z

Sorry, correction,

>> Try Rx/Tx checksum offload on the all the concerned guests of both Hypervisors.
>>
>Already ON on both hypervisors, so some other offloadings(e.g. tso, gso) can be supported.

Try Rx/Tx checksum offload "OFF" on the all the concerned guests of both Hypervisors

And While launching the VM in KVM, in command line of virtio interface, you can specify TSO, LRO, RxMergebuf. Try this instead of ethtool interface.

Thanks,
Venkatesh

-----Original Message-----
From: Zhang Haoyu [mailto:zhanghy@sangfor.com]
Sent: Friday, June 06, 2014 1:26 PM
To: Venkateswara Rao Nandigam; kvm; qemu-devel
Cc: Gleb Natapov; Paolo Bonzini; Michael S.Tsirkin; yewudi
Subject: RE: [network performance question] only ~2Gbps throughput betweentwo linux guests which are running on the same host via netperf -tTCP_STREAM -m 1400, but xen can ac