-----Original Message-----
From: Olivier Matz <redacted>
Sent: Thursday, September 30, 2021 12:39 AM
To: Ali Alnubani <redacted>
Cc: dev@dpdk.org; David Marchand <redacted>;
Alexander Kozyrev [off-list ref]; NBU-Contact-Thomas Monjalon
[off-list ref]; Ferruh Yigit [off-list ref]; Slava
Ovsiienko [off-list ref]; zhaoyan.chen@intel.com; Morten
Brørup [off-list ref]; Andrew Rybchenko
[off-list ref]; Ananyev, Konstantin
[off-list ref]; Ajit Khaparde
[off-list ref]; jerinj@marvell.com
Subject: Re: [dpdk-dev] [dpdk-stable] [PATCH v4] mbuf: fix reset on mbuf
free

Hi Ali,


On Wed, Sep 29, 2021 at 08:03:17AM +0000, Ali Alnubani wrote:

quoted

Hi Olivier,

I wanted to retest the patch on latest main, but it no longer applies, could

you please rebase it?

I rebased the patch:
https://patchwork.dpdk.org/project/dpdk/patch/20210929213707.17727-1-
olivier.matz@6wind.com/

Thanks for the update,
I tested v5 on main (84b3e4555a1f) and the regression we previously saw no longer reproduces.

Will the patch be backported to 20.11? I can still reproduce a 2% drop in single core packet forwarding performance with v4 applied on v20.11.3.

Testpmd: dpdk-testpmd -n 4  -a 0000:82:00.0  -a 0000:82:00.1 -c 0x9000  -- -i  --nb-cores=1  --txd=256 --rxd=256 --auto-start
Traffic generator is TREX with pattern (Ether / IP / UDP).
Drop is from ~50.5 mpps to ~49.5 mpps.

OS: 18.04.5 LTS
Device: ConnectX-5
MLNX_OFED: MLNX_OFED_LINUX-5.4-1.0.3.0
Firmware: 16.31.1014

Regards,
Ali