netdev - Re: Ethernet issue on imx6

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <8e970415-4bc3-4c6f-8cd5-4bbd20d9261d@lunn.ch>
Date: Thu, 12 Oct 2023 22:46:09 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Miquel Raynal <miquel.raynal@...tlin.com>
Cc: Wei Fang <wei.fang@....com>, Shenwei Wang <shenwei.wang@....com>,
	Clark Wang <xiaoning.wang@....com>,
	Russell King <linux@...linux.org.uk>, davem@...emloft.net,
	edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
	linux-imx@....com, netdev@...r.kernel.org,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Maxime Chevallier <maxime.chevallier@...tlin.com>
Subject: Re: Ethernet issue on imx6

> //192.168.1.1 is my host, so the below lines are from the board:
> # iperf3 -c 192.168.1.1 -u -b100M
> [  5]   0.00-10.05  sec   113 MBytes  94.6 Mbits/sec  0.044 ms  467/82603 (0.57%)  receiver
> # iperf3 -c 192.168.1.1 -u -b90M
> [  5]   0.00-10.04  sec  90.5 MBytes  75.6 Mbits/sec  0.146 ms  12163/77688 (16%)  receiver
> # iperf3 -c 192.168.1.1 -u -b80M
> [  5]   0.00-10.05  sec  66.4 MBytes  55.5 Mbits/sec  0.162 ms  20937/69055 (30%)  receiver

Have you tried playing with ‐‐pacing‐timer ?

Maybe iperf is producing a big bursts of packets and then silence for
a while. The burst is overflowing a buffer somewhere? Smooth the flow
and it might work better?

  Andrew