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From: Rafa Corvillo <rafael.corvillo@aoifes.com>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Stephen Hemminger <stephen@networkplumber.org>, netdev@vger.kernel.org
Subject: Re: [ISSUE: sky2 - rx error] Link stops working under heavy traffic load connected to a mv88e6176
Date: Fri, 26 May 2017 12:13:03 +0200	[thread overview]
Message-ID: <5927FFAF.40301@aoifes.com> (raw)
In-Reply-To: <591B267D.1030800@aoifes.com>

As modifying sky2 code I have not could get any solution, then I have 
modified some parameters on the ethernet interface and using a MTU = 
1503 and disabling TSO (TCP Segmentation Offload) mechanism all 
communication errors disappear, both the rx errors due to too long 
packets and tx timeout errors. I have performed iperf tests during 1 
hour (downstream and upstream) and the performance of the ethernet is 
stable. Furthermore, disabling SG (scatter-gather) improves the 
throughput of the ethernet interface with traffic upstream.

Is it possible that these offload mechanism don't work fine with the 
sky2 driver?

Thanks,

Rafa

  reply	other threads:[~2017-05-26 10:13 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-21 12:39 [ISSUE: sky2 - rx error] Link stops working under heavy traffic load connected to a mv88e6176 Rafa Corvillo
2017-04-24  6:45 ` Rafa Corvillo
2017-04-25 15:27 ` Stephen Hemminger
2017-04-27 12:05   ` Rafa Corvillo
2017-04-27 13:04     ` Andrew Lunn
2017-04-28 11:54       ` Rafa Corvillo
2017-04-28 12:22         ` Andrew Lunn
2017-05-08 12:03           ` Rafa Corvillo
2017-05-08 12:38             ` Andrew Lunn
2017-05-16 10:50               ` Rafa Corvillo
2017-05-16 12:47                 ` Andrew Lunn
2017-05-16 13:09                   ` Rafa Corvillo
2017-05-16 13:21                     ` Andrew Lunn
2017-05-16 15:50                       ` Rafa Corvillo
2017-05-16 15:58                         ` Andrew Lunn
2017-05-16 16:19                           ` Rafa Corvillo
2017-05-26 10:13                             ` Rafa Corvillo [this message]
2017-05-31 19:31                               ` Andrew Lunn

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