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...Michael, > > I am playing with vhost multiqueue capability and have a question about > vhost multiqueue and RSS (receive side steering). My setup has Mellanox > ConnectX-3 NIC which supports multiqueue and RSS. Network related > parameters for qemu are: > > -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on,queues=4 > -device virtio-net-pci,netdev=hn0,id=nic1,mq=on,vectors=10 > > In a guest I ran "ethtool -L eth0 combined 4" to enable multiqueue. > > I am running one tcp stream into the guest using iperf. Since there is > only one tcp strea...

...Michael, > > I am playing with vhost multiqueue capability and have a question about > vhost multiqueue and RSS (receive side steering). My setup has Mellanox > ConnectX-3 NIC which supports multiqueue and RSS. Network related > parameters for qemu are: > > -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on,queues=4 > -device virtio-net-pci,netdev=hn0,id=nic1,mq=on,vectors=10 > > In a guest I ran "ethtool -L eth0 combined 4" to enable multiqueue. > > I am running one tcp stream into the guest using iperf. Since there is > only one tcp strea...

...a question about > > > > vhost multiqueue and RSS (receive side steering). My setup has Mellanox > > > > ConnectX-3 NIC which supports multiqueue and RSS. Network related > > > > parameters for qemu are: > > > > > > > > -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on,queues=4 > > > > -device virtio-net-pci,netdev=hn0,id=nic1,mq=on,vectors=10 > > > > > > > > In a guest I ran "ethtool -L eth0 combined 4" to enable multiqueue. > > > > > > > > I am running one tc...

...a question about > > > > vhost multiqueue and RSS (receive side steering). My setup has Mellanox > > > > ConnectX-3 NIC which supports multiqueue and RSS. Network related > > > > parameters for qemu are: > > > > > > > > -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on,queues=4 > > > > -device virtio-net-pci,netdev=hn0,id=nic1,mq=on,vectors=10 > > > > > > > > In a guest I ran "ethtool -L eth0 combined 4" to enable multiqueue. > > > > > > > > I am running one tc...

...playing with vhost multiqueue capability and have a question about > > vhost multiqueue and RSS (receive side steering). My setup has Mellanox > > ConnectX-3 NIC which supports multiqueue and RSS. Network related > > parameters for qemu are: > > > > -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on,queues=4 > > -device virtio-net-pci,netdev=hn0,id=nic1,mq=on,vectors=10 > > > > In a guest I ran "ethtool -L eth0 combined 4" to enable multiqueue. > > > > I am running one tcp stream into the guest using iperf. Since there i...

...playing with vhost multiqueue capability and have a question about > > vhost multiqueue and RSS (receive side steering). My setup has Mellanox > > ConnectX-3 NIC which supports multiqueue and RSS. Network related > > parameters for qemu are: > > > > -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on,queues=4 > > -device virtio-net-pci,netdev=hn0,id=nic1,mq=on,vectors=10 > > > > In a guest I ran "ethtool -L eth0 combined 4" to enable multiqueue. > > > > I am running one tcp stream into the guest using iperf. Since there i...

...t;>>> > > > > > ConnectX-3 NIC which supports multiqueue and RSS. Network related >>>>>> > > > > > parameters for qemu are: >>>>>> > > > > > >>>>>> > > > > > -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on,queues=4 >>>>>> > > > > > -device virtio-net-pci,netdev=hn0,id=nic1,mq=on,vectors=10 >>>>>> > > > > > >>>>>> > > > > > In a guest I ran "ethtool -L eth0 combined...

...t;>>> > > > > > ConnectX-3 NIC which supports multiqueue and RSS. Network related >>>>>> > > > > > parameters for qemu are: >>>>>> > > > > > >>>>>> > > > > > -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on,queues=4 >>>>>> > > > > > -device virtio-net-pci,netdev=hn0,id=nic1,mq=on,vectors=10 >>>>>> > > > > > >>>>>> > > > > > In a guest I ran "ethtool -L eth0 combined...

...queue capability and have a question about > > > vhost multiqueue and RSS (receive side steering). My setup has Mellanox > > > ConnectX-3 NIC which supports multiqueue and RSS. Network related > > > parameters for qemu are: > > > > > > -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on,queues=4 > > > -device virtio-net-pci,netdev=hn0,id=nic1,mq=on,vectors=10 > > > > > > In a guest I ran "ethtool -L eth0 combined 4" to enable multiqueue. > > > > > > I am running one tcp stream into the guest u...

...I am playing with vhost multiqueue capability and have a question about >> vhost multiqueue and RSS (receive side steering). My setup has Mellanox >> ConnectX-3 NIC which supports multiqueue and RSS. Network related >> parameters for qemu are: >> >> -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on,queues=4 >> -device virtio-net-pci,netdev=hn0,id=nic1,mq=on,vectors=10 >> >> In a guest I ran "ethtool -L eth0 combined 4" to enable multiqueue. >> >> I am running one tcp stream into the guest using iperf. Since there is >&...

...> > I am playing with vhost multiqueue capability and have a question > about vhost multiqueue and RSS (receive side steering). My setup has > Mellanox > ConnectX-3 NIC which supports multiqueue and RSS. Network related > parameters for qemu are: > > -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on,queues=4 > -device virtio-net-pci,netdev=hn0,id=nic1,mq=on,vectors=10 > > In a guest I ran "ethtool -L eth0 combined 4" to enable multiqueue. > > I am running one tcp stream into the guest using iperf. Since there is > only one tcp stre...

...> > I am playing with vhost multiqueue capability and have a question > about vhost multiqueue and RSS (receive side steering). My setup has > Mellanox > ConnectX-3 NIC which supports multiqueue and RSS. Network related > parameters for qemu are: > > -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on,queues=4 > -device virtio-net-pci,netdev=hn0,id=nic1,mq=on,vectors=10 > > In a guest I ran "ethtool -L eth0 combined 4" to enable multiqueue. > > I am running one tcp stream into the guest using iperf. Since there is > only one tcp stre...

...t; > > > vhost multiqueue and RSS (receive side steering). My setup has Mellanox > > > > > ConnectX-3 NIC which supports multiqueue and RSS. Network related > > > > > parameters for qemu are: > > > > > > > > > > -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on,queues=4 > > > > > -device virtio-net-pci,netdev=hn0,id=nic1,mq=on,vectors=10 > > > > > > > > > > In a guest I ran "ethtool -L eth0 combined 4" to enable multiqueue. > > > > > > > > >...

...eue and RSS (receive side steering). My setup has Mellanox >>>>>>>> ConnectX-3 NIC which supports multiqueue and RSS. Network related >>>>>>>> parameters for qemu are: >>>>>>>> >>>>>>>> -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on,queues=4 >>>>>>>> -device virtio-net-pci,netdev=hn0,id=nic1,mq=on,vectors=10 >>>>>>>> >>>>>>>> In a guest I ran "ethtool -L eth0 combined 4" to enable multiqueue. >>>>>&g...

...eue and RSS (receive side steering). My setup has Mellanox >>>>>>>> ConnectX-3 NIC which supports multiqueue and RSS. Network related >>>>>>>> parameters for qemu are: >>>>>>>> >>>>>>>> -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on,queues=4 >>>>>>>> -device virtio-net-pci,netdev=hn0,id=nic1,mq=on,vectors=10 >>>>>>>> >>>>>>>> In a guest I ran "ethtool -L eth0 combined 4" to enable multiqueue. >>>>>&g...

...> > > > > ConnectX-3 NIC which supports multiqueue and RSS. Network related > >>>>>> > > > > > parameters for qemu are: > >>>>>> > > > > > > >>>>>> > > > > > -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on,queues=4 > >>>>>> > > > > > -device virtio-net-pci,netdev=hn0,id=nic1,mq=on,vectors=10 > >>>>>> > > > > > > >>>>>> > > > > > In a guest I ran "ethtool -L...

...e to allow user to > > tune polling, it's still not clear for me how *end user* will interact with > > it and how easy it would be for him/her. > > There will be qemu part of the codes for end user. E.g. a vhost_poll_us > parameter for tap like: > > -netdev tap,id=hn0,vhost=on,vhost_pull_us=20 Not strictly related, I'd like to give a try to polling + vhost thread sharing and polling + workqueues. Do you mind sharing the scripts you used to test the polling? Thanks, Mike. > Thanks > > > > > [1] http://thread.gmane.org/gmane.linux.kerne...

...e to allow user to > > tune polling, it's still not clear for me how *end user* will interact with > > it and how easy it would be for him/her. > > There will be qemu part of the codes for end user. E.g. a vhost_poll_us > parameter for tap like: > > -netdev tap,id=hn0,vhost=on,vhost_pull_us=20 Not strictly related, I'd like to give a try to polling + vhost thread sharing and polling + workqueues. Do you mind sharing the scripts you used to test the polling? Thanks, Mike. > Thanks > > > > > [1] http://thread.gmane.org/gmane.linux.kerne...

...ne polling, it's still not clear for me how *end user* will > interact with > > > it and how easy it would be for him/her. > > > > There will be qemu part of the codes for end user. E.g. a vhost_poll_us > > parameter for tap like: > > > > -netdev tap,id=hn0,vhost=on,vhost_pull_us=20 > > Not strictly related, I'd like to give a try to polling + vhost thread > sharing and polling + workqueues. > Do you mind sharing the scripts you used to test the polling? Sure, it was a subtest of autotest[1]. [1] https://github.com/autotest/tp-qemu/b...

Hello all: This seires is an update of last version of multiqueue support to add multiqueue capability to both tap and virtio-net. Some kinds of tap backends has (macvatp in linux) or would (tap) support multiqueue. In such kind of tap backend, each file descriptor of a tap is a qeueu and ioctls were prodived to attach an exist tap file descriptor to the tun/tap device. So the patch let qemu to