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Date: Thu, 11 May 2023 08:11:39 +0000
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--16837926990.AFa56Ae.2706079
Date: Thu, 11 May 2023 10:11:39 +0200
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https://bugs.dpdk.org/show_bug.cgi?id=3D1228

            Bug ID: 1228
           Summary: [dpdk-21.11.4]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: 21.11
          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:=20
Use make showversion or for a non-released version: git remote -v && git
show-ref --heads
 21.11.4-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=3Dvfio-pci 0000:18:00.0

2.View the numa node of the NIC port

root@dut220:~# cat /sys/bus/pci/devices/0000\:18\:00.0/numa_node
0

3.View the lcore of the server

root@dut220:~# /root/dpdk/usertools/cpu_layout.py
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Core and Socket Information (as reported by '/sys/devices/system/cpu')
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3Dcores =3D=20
[0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22,=
 24,
25, 26, 27, 28, 29, 30]
sockets =3D =C2=A0[0, 1]=C2=A0 =C2=A0 =C2=A0 =C2=A0=20
Socket 0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Socket 1
=C2=A0 =C2=A0 =C2=A0 =C2=A0 -------- =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0----=
----
Core 0 =C2=A0[0, 56] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [28, 84]
Core 1 =C2=A0[1, 57] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [29, 85]
Core 2 =C2=A0[2, 58] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [30, 86]
Core 3 =C2=A0[3, 59] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [31, 87]
Core 4 =C2=A0[4, 60] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [32, 88]
Core 5 =C2=A0[5, 61] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [33, 89]
Core 6 =C2=A0[6, 62] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [34, 90]
Core 8 =C2=A0[7, 63] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [35, 91]
Core 9 =C2=A0[8, 64] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [36, 92]
Core 10 [9, 65] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [37, 93]
Core 11 [10, 66] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[38, 94]
Core 12 [11, 67] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[39, 95]
Core 13 [12, 68] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[40, 96]
Core 14 [13, 69] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[41, 97]
Core 16 [14, 70] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[42, 98]
Core 17 [15, 71] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[43, 99]
Core 18 [16, 72] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[44, 100]
Core 19 [17, 73] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[45, 101]
Core 20 [18, 74] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[46, 102]
Core 21 [19, 75] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[47, 103]
Core 22 [20, 76] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[48, 104]
Core 24 [21, 77] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[49, 105]
Core 25 [22, 78] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[50, 106]
Core 26 [23, 79] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[51, 107]
Core 27 [24, 80] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[52, 108]
Core 28 [25, 81] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[53, 109]
Core 29 [26, 82] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[54, 110]
Core 30 [27, 83] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[55, 111]


4.Start vhost-user with the lcores same numa with the NIC port(eg: on scoket
0):

x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 18,19 -n 4 -a 0000:18:00.0=20
--file-prefix=3Dvhost_2352949_20230407162534 =C2=A0--vdev
'net_vhost0,iface=3Dvhost-net,queues=3D1' -- -i --nb-cores=3D1 --txd=3D1024=
 --rxd=3D1024

testpmd>set fwd mac
testpmd>start

5.Start VM0 with QEMU-7.0.0 with the lcores different numa with the NIC
port(eg: on scoket 1):=20=20

taskset -c 30,31,32,33,34,35,36,37 /home/QEMU/qemu-7.0.0/bin/qemu-system-x8=
6_64
=C2=A0-name vm0 -enable-kvm -pidfile /tmp/.vm0.pid -daemonize -monitor
unix:/tmp/vm0_monitor.sock,server,nowait -netdev
user,id=3Dnttsip1,hostfwd=3Dtcp:10.239.252.220:6000-:22 -device
e1000,netdev=3Dnttsip1 =C2=A0-chardev socket,id=3Dchar0,path=3D./vhost-net =
-netdev
type=3Dvhost-user,id=3Dnetdev0,chardev=3Dchar0,vhostforce -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
-cpu host -smp 8 -m 16384 -object
memory-backend-file,id=3Dmem,size=3D16384M,mem-path=3D/mnt/huge,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

6.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/huge
modprobe vfio-pci
echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
dpdk-devbind.py --force --bind=3Dvfio-pci 0000:00:04.0

7.Start testpmd in VM0:

x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 3 -a
0000:00:04.0,vectorized=3D1 -- -i --nb-cores=3D1 --txd=3D1024 --rxd=3D1024

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) | =C2=A0 =C2=A0 =C2=A0 =C2=A0 Mode =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 | Throughput(Mpps) | % linerate | =C2=A0 =C2=A0
Cycle =C2=A0 =C2=A0 =C2=A0|
+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+
| 64 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | virtio0.95 vector_rx | 4.314 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| 7.247 =C2=A0 =C2=A0 =C2=A0| Before
Restart |
+--------------+----------------------+------------------+------------+----=
------------+
Expected Result

Explain what is the expected result in text or as an example output:

+--------------+----------------------+------------------+------------+----=
------------+
| FrameSize(B) | =C2=A0 =C2=A0 =C2=A0 =C2=A0 Mode =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 | Throughput(Mpps) | % linerate | =C2=A0 =C2=A0
Cycle =C2=A0 =C2=A0 =C2=A0|
+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+
| 64 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | virtio0.95 vector_rx | 5.642 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| 9.478 =C2=A0 =C2=A0 =C2=A0| Before
Restart |
+--------------+----------------------+------------------+------------+----=
------------+
Regression

Is this issue a regression: (Y/N) Y

Version the regression was introduced: Specify git id if known.

commit c41493361c87e730459ead9311c68528eb0874aa (HEAD)
Author: Boleslav Stankevich <boleslav.stankevich@oktetlabs.ru>
Date: =C2=A0 Fri Mar 3 14:19:29 2023 +0300

=C2=A0 =C2=A0 net/virtio: deduce IP length for TSO checksum

=C2=A0 =C2=A0 [ upstream commit d069c80a5d8c0a05033932421851cdb7159de0df ]

=C2=A0 =C2=A0 The length of TSO payload could not fit into 16 bits provided=
 by the
=C2=A0 =C2=A0 IPv4 total length and IPv6 payload length fields. Thus, deduc=
e it
=C2=A0 =C2=A0 from the length of the packet.

=C2=A0 =C2=A0 Fixes: 696573046e9e ("net/virtio: support TSO")

=C2=A0 =C2=A0 Signed-off-by: Boleslav Stankevich <boleslav.stankevich@oktet=
labs.ru>
=C2=A0 =C2=A0 Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
=C2=A0 =C2=A0 Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>

Stack Trace or Log
# Add a long stack trace or log output in a noformat block like this.

--=20
You are receiving this mail because:
You are the assignee for the bug.=

--16837926990.AFa56Ae.2706079
Date: Thu, 11 May 2023 10:11:39 +0200
MIME-Version: 1.0
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://bugs.dpdk.org/
Auto-Submitted: auto-generated
X-Auto-Response-Suppress: All

<html>
    <head>
      <base href=3D"https://bugs.dpdk.org/">
    </head>
    <body><table border=3D"1" cellspacing=3D"0" cellpadding=3D"8" class=3D"=
bz_new_table">
        <tr>
          <th>Bug ID</th>
          <td><a class=3D"bz_bug_link=20
          bz_status_UNCONFIRMED "
   title=3D"UNCONFIRMED - [dpdk-21.11.4]pvp_qemu_multi_paths_port_restart:p=
erf_pvp_qemu_vector_rx_mac: performance drop about 23.5% when send small pa=
ckets"
   href=3D"https://bugs.dpdk.org/show_bug.cgi?id=3D1228">1228</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[dpdk-21.11.4]pvp_qemu_multi_paths_port_restart:perf_pvp_qemu=
_vector_rx_mac: performance drop about 23.5% when send small packets
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DPDK
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>21.11
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>UNCONFIRMED
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>vhost/virtio
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>dev&#64;dpdk.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>weix.ling&#64;intel.com
          </td>
        </tr>

        <tr>
          <th>Target Milestone</th>
          <td>---
          </td>
        </tr></table>
      <p>
        <div class=3D"bz_comment_block">
          <pre class=3D"bz_comment_text">[Environment]
DPDK version:=20
Use make showversion or for a non-released version: git remote -v &amp;&amp=
; git
show-ref --heads
 21.11.4-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 &#64; 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=3Dvfio-pci 0000:18:00.0

2.View the numa node of the NIC port

root&#64;dut220:~# cat /sys/bus/pci/devices/0000\:18\:00.0/numa_node
0

3.View the lcore of the server

root&#64;dut220:~# /root/dpdk/usertools/cpu_layout.py
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Core and Socket Information (as reported by '/sys/devices/system/cpu')
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3Dcores =3D=20
[0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22,=
 24,
25, 26, 27, 28, 29, 30]
sockets =3D =C2=A0[0, 1]=C2=A0 =C2=A0 =C2=A0 =C2=A0=20
Socket 0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Socket 1
=C2=A0 =C2=A0 =C2=A0 =C2=A0 -------- =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0----=
----
Core 0 =C2=A0[0, 56] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [28, 84]
Core 1 =C2=A0[1, 57] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [29, 85]
Core 2 =C2=A0[2, 58] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [30, 86]
Core 3 =C2=A0[3, 59] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [31, 87]
Core 4 =C2=A0[4, 60] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [32, 88]
Core 5 =C2=A0[5, 61] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [33, 89]
Core 6 =C2=A0[6, 62] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [34, 90]
Core 8 =C2=A0[7, 63] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [35, 91]
Core 9 =C2=A0[8, 64] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [36, 92]
Core 10 [9, 65] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 [37, 93]
Core 11 [10, 66] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[38, 94]
Core 12 [11, 67] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[39, 95]
Core 13 [12, 68] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[40, 96]
Core 14 [13, 69] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[41, 97]
Core 16 [14, 70] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[42, 98]
Core 17 [15, 71] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[43, 99]
Core 18 [16, 72] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[44, 100]
Core 19 [17, 73] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[45, 101]
Core 20 [18, 74] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[46, 102]
Core 21 [19, 75] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[47, 103]
Core 22 [20, 76] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[48, 104]
Core 24 [21, 77] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[49, 105]
Core 25 [22, 78] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[50, 106]
Core 26 [23, 79] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[51, 107]
Core 27 [24, 80] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[52, 108]
Core 28 [25, 81] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[53, 109]
Core 29 [26, 82] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[54, 110]
Core 30 [27, 83] =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[55, 111]


4.Start vhost-user with the lcores same numa with the NIC port(eg: on scoket
0):

x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 18,19 -n 4 -a 0000:18:00.0=20
--file-prefix=3Dvhost_2352949_20230407162534 =C2=A0--vdev
'net_vhost0,iface=3Dvhost-net,queues=3D1' -- -i --nb-cores=3D1 --txd=3D1024=
 --rxd=3D1024

testpmd&gt;set fwd mac
testpmd&gt;start

5.Start VM0 with QEMU-7.0.0 with the lcores different numa with the NIC
port(eg: on scoket 1):=20=20

taskset -c 30,31,32,33,34,35,36,37 /home/QEMU/qemu-7.0.0/bin/qemu-system-x8=
6_64
=C2=A0-name vm0 -enable-kvm -pidfile /tmp/.vm0.pid -daemonize -monitor
unix:/tmp/vm0_monitor.sock,server,nowait -netdev
user,id=3Dnttsip1,hostfwd=3Dtcp:10.239.252.220:6000-:22 -device
e1000,netdev=3Dnttsip1 =C2=A0-chardev socket,id=3Dchar0,path=3D./vhost-net =
-netdev
type=3Dvhost-user,id=3Dnetdev0,chardev=3Dchar0,vhostforce -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
-cpu host -smp 8 -m 16384 -object
memory-backend-file,id=3Dmem,size=3D16384M,mem-path=3D/mnt/huge,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

6.SSH VM0 and bind virtio-net to vfio-pci:

echo 0 &gt; /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
echo 1024 &gt;
/sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages
mkdir -p /mnt/huge
mount -t hugetlbfs nodev /mnt/huge
modprobe vfio-pci
echo 1 &gt; /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
dpdk-devbind.py --force --bind=3Dvfio-pci 0000:00:04.0

7.Start testpmd in VM0:

x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 3 -a
0000:00:04.0,vectorized=3D1 -- -i --nb-cores=3D1 --txd=3D1024 --rxd=3D1024

testpmd&gt;set fwd mac
testpmd&gt;start

6.Use pktgen to send packets, and record the throughput.

Show the output from the previous commands.

+--------------+----------------------+------------------+------------+----=
------------+
| FrameSize(B) | =C2=A0 =C2=A0 =C2=A0 =C2=A0 Mode =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 | Throughput(Mpps) | % linerate | =C2=A0 =C2=A0
Cycle =C2=A0 =C2=A0 =C2=A0|
+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+
| 64 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | virtio0.95 vector_rx | 4.314 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| 7.247 =C2=A0 =C2=A0 =C2=A0| Before
Restart |
+--------------+----------------------+------------------+------------+----=
------------+
Expected Result

Explain what is the expected result in text or as an example output:

+--------------+----------------------+------------------+------------+----=
------------+
| FrameSize(B) | =C2=A0 =C2=A0 =C2=A0 =C2=A0 Mode =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 | Throughput(Mpps) | % linerate | =C2=A0 =C2=A0
Cycle =C2=A0 =C2=A0 =C2=A0|
+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+
| 64 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | virtio0.95 vector_rx | 5.642 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| 9.478 =C2=A0 =C2=A0 =C2=A0| Before
Restart |
+--------------+----------------------+------------------+------------+----=
------------+
Regression

Is this issue a regression: (Y/N) Y

Version the regression was introduced: Specify git id if known.

commit c41493361c87e730459ead9311c68528eb0874aa (HEAD)
Author: Boleslav Stankevich &lt;<a href=3D"mailto:boleslav.stankevich&#64;o=
ktetlabs.ru">boleslav.stankevich&#64;oktetlabs.ru</a>&gt;
Date: =C2=A0 Fri Mar 3 14:19:29 2023 +0300

=C2=A0 =C2=A0 net/virtio: deduce IP length for TSO checksum

=C2=A0 =C2=A0 [ upstream commit d069c80a5d8c0a05033932421851cdb7159de0df ]

=C2=A0 =C2=A0 The length of TSO payload could not fit into 16 bits provided=
 by the
=C2=A0 =C2=A0 IPv4 total length and IPv6 payload length fields. Thus, deduc=
e it
=C2=A0 =C2=A0 from the length of the packet.

=C2=A0 =C2=A0 Fixes: 696573046e9e (&quot;net/virtio: support TSO&quot;)

=C2=A0 =C2=A0 Signed-off-by: Boleslav Stankevich &lt;<a href=3D"mailto:bole=
slav.stankevich&#64;oktetlabs.ru">boleslav.stankevich&#64;oktetlabs.ru</a>&=
gt;
=C2=A0 =C2=A0 Reviewed-by: Andrew Rybchenko &lt;<a href=3D"mailto:andrew.ry=
bchenko&#64;oktetlabs.ru">andrew.rybchenko&#64;oktetlabs.ru</a>&gt;
=C2=A0 =C2=A0 Reviewed-by: Maxime Coquelin &lt;<a href=3D"mailto:maxime.coq=
uelin&#64;redhat.com">maxime.coquelin&#64;redhat.com</a>&gt;

Stack Trace or Log
# Add a long stack trace or log output in a noformat block like this.
          </pre>
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