https://bugs.dpdk.org/show_bug.cgi?id=1212 Bug ID: 1212 Summary: [dpdk-21.11.8]pvp_qemu_multi_paths_port_restart:perf_p vp_qemu_vector_rx_mac: performance drop about 23.5% when send small packets Product: DPDK Version: 20.11 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: vhost/virtio Assignee: dev@dpdk.org Reporter: weix.ling@intel.com Target Milestone: --- [Environment] DPDK version: Use make showversion or for a non-released version: git remote -v && git show-ref --heads 20.11.8-rc1 Other software versions: QEMU-7.0.0. OS: Ubuntu 22.04.1 LTS/Linux 5.15.45-051545-generic Compiler: gcc version 11.3.0 (Ubuntu 11.3.0-1ubuntu1~22.04) Hardware platform: Intel(R) Xeon(R) Platinum 8280M CPU @ 2.70GHz NIC hardware: Intel Ethernet Controller XL710 for 40GbE QSFP+ 1583 NIC firmware: i40e-2.22.18/9.20 0x8000d893 1.3353.0 [Test Setup] Steps to reproduce List the steps to reproduce the issue. 1.Bind 1 NIC port to vfio-pci dpdk-devbind.py --force --bind=vfio-pci 0000:af:00.0 2.Start vhost-user: x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 28,29,30 -n 4 -a 0000:af:00.0 --file-prefix=vhost_2352949_20230407162534 --vdev 'net_vhost0,iface=vhost-net,queues=1' -- -i --nb-cores=1 --txd=1024 --rxd=1024 testpmd>set fwd mac testpmd>start 3.Start VM0 with QEMU-7.0.0 taskset -c 20,21,22,23,24,25,26,27 /home/QEMU/qemu-7.0.0/bin/qemu-system-x86_64 -name vm0 -enable-kvm -pidfile /tmp/.vm0.pid -daemonize -monitor unix:/tmp/vm0_monitor.sock,server,nowait -netdev user,id=nttsip1,hostfwd=tcp:10.239.252.220:6000-:22 -device e1000,netdev=nttsip1 -chardev socket,id=char0,path=./vhost-net -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=true,mrg_rxbuf=off,rx_queue_size=1024,tx_queue_size=1024 -cpu host -smp 8 -m 16384 -object memory-backend-file,id=mem,size=16384M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc -chardev socket,path=/tmp/vm0_qga0.sock,server,nowait,id=vm0_qga0 -device virtio-serial -device virtserialport,chardev=vm0_qga0,name=org.qemu.guest_agent.0 -vnc :4 -drive file=/home/image/ubuntu2004.img 4.SSH VM0 and bind virtio-net to vfio-pci: echo 0 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages echo 1024 > /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages mkdir -p /mnt/huge mount -t hugetlbfs nodev /mnt/hugemodprobe vfio-pci echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode dpdk-devbind.py --force --bind=vfio-pci 0000:00:04.0 5.Start testpmd in VM0: x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 3 -- -i --nb-cores=1 --txd=1024 --rxd=1024 testpmd>set fwd mac testpmd>start 6.Use pktgen to send packets, and record the throughput. Show the output from the previous commands. +--------------+----------------------+------------------+------------+----------------+ | FrameSize(B) | Mode | Throughput(Mpps) | % linerate | Cycle | +==============+======================+==================+============+================+ | 64 | virtio0.95 vector_rx | 4.314 | 7.247 | Before Restart | +--------------+----------------------+------------------+------------+----------------+ | 128 | virtio0.95 vector_rx | 4.244 | 12.563 | Before Restart | +--------------+----------------------+------------------+------------+----------------+ | 256 | virtio0.95 vector_rx | 4.576 | 25.262 | Before Restart | +--------------+----------------------+------------------+------------+----------------+ | 512 | virtio0.95 vector_rx | 3.435 | 36.544 | Before Restart | +--------------+----------------------+------------------+------------+----------------+ | 1024 | virtio0.95 vector_rx | 2.695 | 56.268 | Before Restart | +--------------+----------------------+------------------+------------+----------------+ | 1280 | virtio0.95 vector_rx | 2.490 | 64.731 | Before Restart | +--------------+----------------------+------------------+------------+----------------+ | 1518 | virtio0.95 vector_rx | 2.248 | 69.140 | Before Restart | +--------------+----------------------+------------------+------------+----------------+ [Expected Result] Explain what is the expected result in text or as an example output: +--------------+----------------------+------------------+------------+----------------+ | FrameSize(B) | Mode | Throughput(Mpps) | % linerate | Cycle | +==============+======================+==================+============+================+ | 64 | virtio0.95 vector_rx | 5.642 | 9.478 | Before Restart | +--------------+----------------------+------------------+------------+----------------+ | 128 | virtio0.95 vector_rx | 5.493 | 16.259 | Before Restart | +--------------+----------------------+------------------+------------+----------------+ | 256 | virtio0.95 vector_rx | 5.004 | 27.620 | Before Restart | +--------------+----------------------+------------------+------------+----------------+ | 512 | virtio0.95 vector_rx | 3.343 | 35.565 | Before Restart | +--------------+----------------------+------------------+------------+----------------+ | 1024 | virtio0.95 vector_rx | 2.664 | 55.629 | Before Restart | +--------------+----------------------+------------------+------------+----------------+ | 1280 | virtio0.95 vector_rx | 2.500 | 64.990 | Before Restart | +--------------+----------------------+------------------+------------+----------------+ | 1518 | virtio0.95 vector_rx | 2.309 | 71.028 | Before Restart | +--------------+----------------------+------------------+------------+----------------+ Regression Is this issue a regression: (Y/N) Y Version the regression was introduced: Specify git id if known. Bad commit id: commit abfe2cb0b40b3ceeb44df642c9d28a06bdfc9fb4 (HEAD) Author: Luca Boccassi Date: Mon Nov 28 14:11:25 2022 +0000 Revert "mempool: fix get objects from mempool with cache" As requested by the author This reverts commit 26cb4c81b552594292f7c744afb904f01700dfe8. -- You are receiving this mail because: You are the assignee for the bug.