From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id B066B46AF4; Fri, 4 Jul 2025 13:24:11 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 579B14028B; Fri, 4 Jul 2025 13:24:11 +0200 (CEST) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id E06C140267 for ; Fri, 4 Jul 2025 13:24:10 +0200 (CEST) Received: by inbox.dpdk.org (Postfix, from userid 33) id CBDD846AF6; Fri, 4 Jul 2025 13:24:10 +0200 (CEST) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [DPDK/vhost/virtio Bug 1747] [dpdk-25.07] virtio_pvp_regression: perf drop Date: Fri, 04 Jul 2025 11:24:10 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: vhost/virtio X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: yux.jiang@intel.com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: Normal X-Bugzilla-Assigned-To: dev@dpdk.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: Content-Type: multipart/alternative; boundary=17516282500.F33df472.1904402 Content-Transfer-Encoding: 7bit X-Bugzilla-URL: https://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org --17516282500.F33df472.1904402 Date: Fri, 4 Jul 2025 13:24:10 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All https://bugs.dpdk.org/show_bug.cgi?id=3D1747 Bug ID: 1747 Summary: [dpdk-25.07] virtio_pvp_regression: perf drop Product: DPDK Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: vhost/virtio Assignee: dev@dpdk.org Reporter: yux.jiang@intel.com Target Milestone: --- [Environment] DPDK version:=20 commit 20460dcffd08a4680f881c39916ae783ee830374 (HEAD -> main, tag: v25.07-= rc2, origin/main, origin/HEAD) Author: Thomas Monjalon Date: Mon Jun 30 00:23:49 2025 +0200 version: 25.07-rc2 Signed-off-by: Thomas Monjalon OS: Ubuntu 24.04.2 LTS (Noble Numbat); 6.8.0-62-generic Compiler: gcc version 13.3.0 (Ubuntu 13.3.0-6ubuntu2~24.04) Hardware platform: Intel(R) Xeon(R) Platinum 8380 CPU @ 2.30GHz CPU @ 2.3G= Hz QEMU: qemu-10.0.2 NIC: Ethernet Controller E810-C for QSFP 1592 [Bad commit Debug Info]: 3e3c7f3fa5 net/virtio: fix check of threshold for Tx freeing [Test Setup] Steps to reproduce List the steps to reproduce the issue. 1, Build dpdk rm -rf x86_64-native-linuxapp-gcc CC=3Dgcc meson -Denable_kmods=3DTrue -Dlibdir=3Dlib --default-library=3Dst= atic x86_64-native-linuxapp-gcc ninja -C x86_64-native-linuxapp-gcc 2, Bind one NIC port and launch vhost-user usertools/dpdk-devbind.py --force --bind=3Dvfio-pci 0000:4b:00.0 x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 5-7 -n 8 -a 0000:4b:00.0 --file-prefix=3Dvhost_343434_20250703181552 --vdev 'eth_vhost0,iface=3D/root/dpdk/vhost-net,queues=3D2,client=3D1' -- -i --nb-= cores=3D2 --rxq=3D2 --txq=3D2 --txd=3D1024 --rxd=3D1024 set fwd mac start 3, Launch qemu and start testpmd lsof -n -i:6000 taskset -c 20,21,22,23,24,25,26,27 /home/QEMU/qemu-10.0.2/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=3Dnttsip1,hostfwd=3Dtcp:10.239.252.245:6000-:22 -device e1000,netdev=3Dnttsip1 -chardev socket,id=3Dchar0,path=3D/root/dpdk/vhost-n= et,server -netdev type=3Dvhost-user,id=3Dnetdev0,chardev=3Dchar0,vhostforce,queues=3D= 2 -device virtio-net-pci,netdev=3Dnetdev0,mac=3D52:54:00:00:00:01,disable-modern=3Dtr= ue,mrg_rxbuf=3Doff,rx_queue_size=3D1024,tx_queue_size=3D1024,mq=3Don,vector= s=3D15 -cpu host -smp 8 -m 8192 -object memory-backend-file,id=3Dmem,size=3D8192M,mem-path=3D/dev/hugepages,share= =3Don -numa node,memdev=3Dmem -mem-prealloc -chardev socket,path=3D/tmp/vm0_qga0.sock,server,nowait,id=3Dvm0_qga0 -device virtio= -serial -device virtserialport,chardev=3Dvm0_qga0,name=3Dorg.qemu.guest_agent.0 -vn= c :4 -drive file=3D/home/image/ubuntu2004.img IN VM: echo 0 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages echo 1024 > /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages modprobe vfio modprobe vfio-pci echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode usertools/dpdk-devbind.py --force --bind=3Dvfio-pci --noiommu-mode 0000:00:= 04.0 x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x7 -n 4 -- -i --enable-hw-vlan-strip --nb-cores=3D2 --rxq=3D2 --txq=3D2 --txd=3D1024 --rx= d=3D1024 set fwd mac start 4, Use trex to send pkgs Ether(dst=3D"40:a6:b7:96:e4:00")/IP(src=3D"192.168.4.1")/("X"*26) 5, on Vhost side check NIC statistics: testpmd> show port stats all [Actual Result] testpmd> show port stats all ######################## NIC statistics for port 0 #####################= ### RX-packets: 1335228256 RX-missed: 3852467168 RX-bytes: 1257101091618 RX-errors: 0 RX-nombuf: 0 TX-packets: 1335227072 TX-errors: 0 TX-bytes: 922022159232 Throughput (since last show) Rx-pps: 2082875 Rx-bps: 8546636528 Tx-pps: 2082875 Tx-bps: 10284137360 #########################################################################= ### ######################## NIC statistics for port 1 #####################= ### RX-packets: 1335227200 RX-missed: 0 RX-bytes: 2021533980800 RX-errors: 0 RX-nombuf: 0 TX-packets: 1335227392 TX-errors: 0 TX-bytes: 2021534271488 Throughput (since last show) Rx-pps: 2082875 Rx-bps: 25227789696 Tx-pps: 2082875 Tx-bps: 25227789696 #########################################################################= ### testpmd> [Expect Result] testpmd> show port stats all ######################## NIC statistics for port 0 #####################= ### RX-packets: 161121824 RX-missed: 290949041 RX-bytes: 684435274430 RX-errors: 0 RX-nombuf: 0 TX-packets: 161069126 TX-errors: 0 TX-bytes: 243858650692 Throughput (since last show) Rx-pps: 2880720 Rx-bps: 98209559280 Tx-pps: 2880658 Tx-bps: 34890425968 #########################################################################= ### ######################## NIC statistics for port 1 #####################= ### RX-packets: 161069346 RX-missed: 0 RX-bytes: 243858989844 RX-errors: 0 RX-nombuf: 0 TX-packets: 161070988 TX-errors: 50004 TX-bytes: 243861475832 Throughput (since last show) Rx-pps: 2880737 Rx-bps: 34891493424 Tx-pps: 2880737 Tx-bps: 34891493424 ######## --=20 You are receiving this mail because: You are the assignee for the bug.= --17516282500.F33df472.1904402 Date: Fri, 4 Jul 2025 13:24:10 +0200 MIME-Version: 1.0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All
Bug ID 1747
Summary [dpdk-25.07] virtio_pvp_regression: perf drop
Product DPDK
Version unspecified
Hardware All
OS All
Status UNCONFIRMED
Severity normal
Priority Normal
Component vhost/virtio
Assignee dev@dpdk.org
Reporter yux.jiang@intel.com
Target Milestone --- 

[Environment]

DPDK version:=20
commit 20460dcffd08a4680f881c39916ae783ee830374 (HEAD -> main, tag: v25.=
07-rc2,
origin/main, origin/HEAD)
Author: Thomas Monjalon <thom=
as@monjalon.net>
Date:   Mon Jun 30 00:23:49 2025 +0200

    version: 25.07-rc2

    Signed-off-by: Thomas Monjalon <thomas@monjalon.net>

OS: Ubuntu 24.04.2 LTS (Noble Numbat); 6.8.0-62-generic
Compiler: gcc version 13.3.0 (Ubuntu 13.3.0-6ubuntu2~24.04)
Hardware platform: Intel(R) Xeon(R) Platinum 8380 CPU @ 2.30GHz  CPU &#=
64; 2.3GHz
QEMU: qemu-10.0.2
NIC: Ethernet Controller E810-C for QSFP 1592

[Bad commit Debug Info]:
  3e3c7f3fa5 net/virtio: fix check of threshold for Tx freeing
[Test Setup]
Steps to reproduce
List the steps to reproduce the issue.

1, Build dpdk
rm -rf x86_64-native-linuxapp-gcc
CC=3Dgcc meson -Denable_kmods=3DTrue -Dlibdir=3Dlib  --default-library=3Dst=
atic
x86_64-native-linuxapp-gcc
ninja -C x86_64-native-linuxapp-gcc

2, Bind one NIC port and launch vhost-user
usertools/dpdk-devbind.py --force --bind=3Dvfio-pci 0000:4b:00.0
x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 5-7 -n 8 -a 0000:4b:00.0
--file-prefix=3Dvhost_343434_20250703181552 --vdev
'eth_vhost0,iface=3D/root/dpdk/vhost-net,queues=3D2,client=3D1' -- -i --nb-=
cores=3D2
--rxq=3D2 --txq=3D2  --txd=3D1024 --rxd=3D1024
set fwd mac
start

3, Launch qemu and start testpmd
lsof -n -i:6000
taskset -c 20,21,22,23,24,25,26,27
/home/QEMU/qemu-10.0.2/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=3Dnttsip1,hostfwd=3Dtcp:10.239.252.245:6000-:22 -device
e1000,netdev=3Dnttsip1 -chardev socket,id=3Dchar0,path=3D/root/dpdk/vhost-n=
et,server
-netdev type=3Dvhost-user,id=3Dnetdev0,chardev=3Dchar0,vhostforce,queues=3D=
2 -device
virtio-net-pci,netdev=3Dnetdev0,mac=3D52:54:00:00:00:01,disable-modern=3Dtr=
ue,mrg_rxbuf=3Doff,rx_queue_size=3D1024,tx_queue_size=3D1024,mq=3Don,vector=
s=3D15
-cpu host -smp 8 -m 8192 -object
memory-backend-file,id=3Dmem,size=3D8192M,mem-path=3D/dev/hugepages,share=
=3Don -numa
node,memdev=3Dmem -mem-prealloc -chardev
socket,path=3D/tmp/vm0_qga0.sock,server,nowait,id=3Dvm0_qga0 -device virtio=
-serial
-device virtserialport,chardev=3Dvm0_qga0,name=3Dorg.qemu.guest_agent.0 -vn=
c :4
-drive file=3D/home/image/ubuntu2004.img

IN VM:
echo 0 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
echo 1024 >
/sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages
modprobe vfio
modprobe vfio-pci
echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
usertools/dpdk-devbind.py --force --bind=3Dvfio-pci --noiommu-mode 0000:00:=
04.0
x86_64-native-linuxapp-gcc/app/dpdk-testpmd  -c 0x7 -n 4 -- -i
--enable-hw-vlan-strip --nb-cores=3D2 --rxq=3D2 --txq=3D2 --txd=3D1024 --rx=
d=3D1024
set fwd mac
start

4, Use trex to send pkgs
Ether(dst=3D"40:a6:b7:96:e4:00")/IP(src=3D"192.168.4.1"=
)/("X"*26)

5, on Vhost side check NIC statistics:
testpmd> show port stats all

[Actual Result]
testpmd> show port stats all

  ######################## NIC statistics for port 0  #####################=
###
  RX-packets: 1335228256 RX-missed: 3852467168 RX-bytes:  1257101091618
  RX-errors: 0
  RX-nombuf:  0
  TX-packets: 1335227072 TX-errors: 0          TX-bytes:  922022159232

  Throughput (since last show)
  Rx-pps:      2082875          Rx-bps:   8546636528
  Tx-pps:      2082875          Tx-bps:  10284137360
  #########################################################################=
###

  ######################## NIC statistics for port 1  #####################=
###
  RX-packets: 1335227200 RX-missed: 0          RX-bytes:  2021533980800
  RX-errors: 0
  RX-nombuf:  0
  TX-packets: 1335227392 TX-errors: 0          TX-bytes:  2021534271488

  Throughput (since last show)
  Rx-pps:      2082875          Rx-bps:  25227789696
  Tx-pps:      2082875          Tx-bps:  25227789696
  #########################################################################=
###
testpmd>


[Expect Result]
testpmd> show port stats all

  ######################## NIC statistics for port 0  #####################=
###
  RX-packets: 161121824  RX-missed: 290949041  RX-bytes:  684435274430
  RX-errors: 0
  RX-nombuf:  0
  TX-packets: 161069126  TX-errors: 0          TX-bytes:  243858650692

  Throughput (since last show)
  Rx-pps:      2880720          Rx-bps:  98209559280
  Tx-pps:      2880658          Tx-bps:  34890425968
  #########################################################################=
###

  ######################## NIC statistics for port 1  #####################=
###
  RX-packets: 161069346  RX-missed: 0          RX-bytes:  243858989844
  RX-errors: 0
  RX-nombuf:  0
  TX-packets: 161070988  TX-errors: 50004      TX-bytes:  243861475832

  Throughput (since last show)
  Rx-pps:      2880737          Rx-bps:  34891493424
  Tx-pps:      2880737          Tx-bps:  34891493424
  ########

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