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From: bugzilla@dpdk.org
To: dev@dpdk.org
Subject: [Bug 1254] [dpdk-23.07] iavf performance drop 8%
Date: Tue, 20 Jun 2023 09:38:52 +0000
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Date: Tue, 20 Jun 2023 11:38:52 +0200
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https://bugs.dpdk.org/show_bug.cgi?id=3D1254
Bug ID: 1254
Summary: [dpdk-23.07] iavf performance drop 8%
Product: DPDK
Version: 23.07
Hardware: x86
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: testpmd
Assignee: dev@dpdk.org
Reporter: yingyax.han@intel.com
Target Milestone: ---
Steps to reproduce
1.create vfs and bind to vfio-pci
echo 1 > /sys/bus/pci/devices/0000\:31\:00.0/sriov_numvfs
echo 1 > /sys/bus/pci/devices/0000\:4b\:00.0/sriov_numvfs
ip link set ens85f0 vf 0 spoofchk off
ip link set ens85f0 vf 0 trust on
ip link set ens93f0 vf 0 spoofchk off
ip link set ens93f0 vf 0 trust on
./usertools/dpdk-devbind.py -b vfio-pci 31:01.0 4b:01.0=20
2.start testpmd with io fwd
dpdk-testpmd -l 5,6,7 -n 8 --force-max-simd-bitwidth=3D512 -- -i --txq=3D2 =
--rxq=3D2
--nb-cores=3D2
EAL: Detected CPU lcores: 128
EAL: Detected NUMA nodes: 2
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: VFIO support initialized
EAL: Using IOMMU type 1 (Type 1)
EAL: Probe PCI driver: net_iavf (8086:1889) device: 0000:31:01.0 (socket 0)
EAL: Probe PCI driver: net_iavf (8086:1889) device: 0000:4b:01.0 (socket 0)
TELEMETRY: No legacy callbacks, legacy socket not created
Interactive-mode selected
testpmd: create a new mbuf pool <mb_pool_0>: n=3D163456, size=3D2176, socke=
t=3D0
testpmd: preferred mempool ops selected: ring_mp_mc
Configuring Port 0 (socket 0)
iavf_configure_queues(): request RXDID[22] in Queue[0]
iavf_configure_queues(): request RXDID[22] in Queue[1]Port 0: link state ch=
ange
eventPort 0: link state change eventPort 0: link state change eventPort 0: =
link
state change event
Port 0: 6A:CF:11:53:D5:96
Configuring Port 1 (socket 0)
iavf_configure_queues(): request RXDID[22] in Queue[0]
iavf_configure_queues(): request RXDID[22] in Queue[1]Port 1: link state ch=
ange
eventPort 1: link state change eventPort 1: link state change eventPort 1: =
link
state change event
Port 1: 7E:4B:A0:11:25:5B
Checking link statuses...
Done
testpmd> start
3.Start transmit traffic from ixia.
transmit rate: 100%
frame size: 64
IP/fixed dst, ramdom src
4.Actual Result.
| Fwd_core | Frame Size | Throughput
| 2C/2T | 64 | 80.7 Mpps=20
5.Expected Result.
| Fwd_core | Frame Size | Throughput
| 2C/2T | 64 | 87.9 Mpps=20
6. DPDK Bad commit.
commit ed090599c8bdcf5788d3459a752f1bbac0cef176
Author: Tyler Retzlaff <roretzla@linux.microsoft.com>
Date: Mon Mar 20 12:00:21 2023 -0700=20=20=20=20=20
rework atomic intrinsics fetch operations
--=20
You are receiving this mail because:
You are the assignee for the bug.=
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Date: Tue, 20 Jun 2023 11:38:52 +0200
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<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-23.07] iavf performance drop 8%"
href=3D"https://bugs.dpdk.org/show_bug.cgi?id=3D1254">1254</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[dpdk-23.07] iavf performance drop 8%
</td>
</tr>
<tr>
<th>Product</th>
<td>DPDK
</td>
</tr>
<tr>
<th>Version</th>
<td>23.07
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</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>testpmd
</td>
</tr>
<tr>
<th>Assignee</th>
<td>dev@dpdk.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>yingyax.han@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">Steps to reproduce
1.create vfs and bind to vfio-pci
echo 1 > /sys/bus/pci/devices/0000\:31\:00.0/sriov_numvfs
echo 1 > /sys/bus/pci/devices/0000\:4b\:00.0/sriov_numvfs
ip link set ens85f0 vf 0 spoofchk off
ip link set ens85f0 vf 0 trust on
ip link set ens93f0 vf 0 spoofchk off
ip link set ens93f0 vf 0 trust on
./usertools/dpdk-devbind.py -b vfio-pci 31:01.0 4b:01.0=20
2.start testpmd with io fwd
dpdk-testpmd -l 5,6,7 -n 8 --force-max-simd-bitwidth=3D512 -- -i --txq=3D2 =
--rxq=3D2
--nb-cores=3D2
EAL: Detected CPU lcores: 128
EAL: Detected NUMA nodes: 2
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: VFIO support initialized
EAL: Using IOMMU type 1 (Type 1)
EAL: Probe PCI driver: net_iavf (8086:1889) device: 0000:31:01.0 (socket 0)
EAL: Probe PCI driver: net_iavf (8086:1889) device: 0000:4b:01.0 (socket 0)
TELEMETRY: No legacy callbacks, legacy socket not created
Interactive-mode selected
testpmd: create a new mbuf pool <mb_pool_0>: n=3D163456, size=3D2176,=
socket=3D0
testpmd: preferred mempool ops selected: ring_mp_mc
Configuring Port 0 (socket 0)
iavf_configure_queues(): request RXDID[22] in Queue[0]
iavf_configure_queues(): request RXDID[22] in Queue[1]Port 0: link state ch=
ange
eventPort 0: link state change eventPort 0: link state change eventPort 0: =
link
state change event
Port 0: 6A:CF:11:53:D5:96
Configuring Port 1 (socket 0)
iavf_configure_queues(): request RXDID[22] in Queue[0]
iavf_configure_queues(): request RXDID[22] in Queue[1]Port 1: link state ch=
ange
eventPort 1: link state change eventPort 1: link state change eventPort 1: =
link
state change event
Port 1: 7E:4B:A0:11:25:5B
Checking link statuses...
Done
testpmd> start
3.Start transmit traffic from ixia.
transmit rate: 100%
frame size: 64
IP/fixed dst, ramdom src
4.Actual Result.
| Fwd_core | Frame Size | Throughput
| 2C/2T | 64 | 80.7 Mpps=20
5.Expected Result.
| Fwd_core | Frame Size | Throughput
| 2C/2T | 64 | 87.9 Mpps=20
6. DPDK Bad commit.
commit ed090599c8bdcf5788d3459a752f1bbac0cef176
Author: Tyler Retzlaff <<a href=3D"mailto:roretzla@linux.microsoft.c=
om">roretzla@linux.microsoft.com</a>>
Date: Mon Mar 20 12:00:21 2023 -0700=20=20=20=20=20
rework atomic intrinsics fetch operations
</pre>
</div>
</p>
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