From: "Flávio Silveira" <fggs@terra•com.br>
To: netdev@vger•kernel.org, Chris Snook <chris.snook@gmail•com>,
jcliburn@gmail•com
Subject: Re: Attansic L1 driver issue
Date: Tue, 12 Jan 2016 13:13:03 -0200 [thread overview]
Message-ID: <569517FF.6060602@terra.com.br> (raw)
In-Reply-To: <56876713.9090100@terra.com.br>
On 02/01/2016 03:58, Flávio Silveira wrote:
> Good morning,
>
> I'm investigating a possible issue with atl1 driver used by Attansic
> L1.
>
> During my tests with iperf3 I saw a performance drop when the
> computer is client.
>
> I can hit only about 580~600Mbit/s, if I disable
> generic-segmentation-offload (GSO) I can hit 660~670Mbit/s.
>
> When the computer is server, I can hit 940~950Mbit/s.
Hi,
I'm continuing to investigate this, tried older kernels (2.6.32 and
3.2.68) in order to see if it was a regression.
What I discovered so far is that if I disable scatter-gather I can
see around 70Mbit/s of improvement, I wonder if there is anything else I
can do to understand the "tx busy" message I mentioned in first mail or
the issue itself.
Regards,
Flavio
prev parent reply other threads:[~2016-01-12 15:13 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-02 5:58 Attansic L1 driver issue Flávio Silveira
2016-01-12 15:13 ` Flávio Silveira [this message]
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