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From: "André Roth" <neolynx@gmail.com>
To: Giuseppe CAVALLARO <peppe.cavallaro@st.com>
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	<netdev@vger.kernel.org>, <linux-amlogic@lists.infradead.org>,
	Alexandre Torgue <alexandre.torgue@st.com>
Subject: Re: stmmac/RTL8211F/Meson GXBB: TX throughput problems
Date: Sun, 18 Sep 2016 22:42:40 +0200	[thread overview]
Message-ID: <20160918224240.0bf5a9ed@gmail.com> (raw)
In-Reply-To: <ce15ad26-2d07-655d-b813-947ad86696ac@st.com>


Hello,

> For example, you could try disabling the scatter-gather or tx-cum
> via ethtool and seeing if there is some benefit; so we could image
> some problem on your HW or SYNP MAC integration for checksumming
> on tx side.

disabling the following: 
  ethtool -K eth0 sg off    
or:
  ethtool -K eth0 tx off    
does not prevent the network communication going down..

> Also you could check the AXI tuning and PBL value. To be honest
> (thinking about your problem) I can actually suspect some related
> problem on bus setup. So I suggest you to play with these value
> (better if you ask for having values from HW validation on your side).
> Otherwise the stmmac uses a default that cannot be good for your
> platform. For example, sometime I have seen that PBL is better if
> reduced to 8 instead of 32 and w/o 4xPBL...

how can I set those values ?

thanks for your time,

 andre

WARNING: multiple messages have this Message-ID (diff)
From: neolynx@gmail.com (André Roth)
To: linus-amlogic@lists.infradead.org
Subject: stmmac/RTL8211F/Meson GXBB: TX throughput problems
Date: Sun, 18 Sep 2016 22:42:40 +0200	[thread overview]
Message-ID: <20160918224240.0bf5a9ed@gmail.com> (raw)
In-Reply-To: <ce15ad26-2d07-655d-b813-947ad86696ac@st.com>


Hello,

> For example, you could try disabling the scatter-gather or tx-cum
> via ethtool and seeing if there is some benefit; so we could image
> some problem on your HW or SYNP MAC integration for checksumming
> on tx side.

disabling the following: 
  ethtool -K eth0 sg off    
or:
  ethtool -K eth0 tx off    
does not prevent the network communication going down..

> Also you could check the AXI tuning and PBL value. To be honest
> (thinking about your problem) I can actually suspect some related
> problem on bus setup. So I suggest you to play with these value
> (better if you ask for having values from HW validation on your side).
> Otherwise the stmmac uses a default that cannot be good for your
> platform. For example, sometime I have seen that PBL is better if
> reduced to 8 instead of 32 and w/o 4xPBL...

how can I set those values ?

thanks for your time,

 andre

  reply	other threads:[~2016-09-18 20:42 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-11 20:39 stmmac/RTL8211F/Meson GXBB: TX throughput problems Martin Blumenstingl
2016-09-11 20:39 ` Martin Blumenstingl
2016-09-12 16:37 ` Alexandre Torgue
2016-09-12 16:37   ` Alexandre Torgue
2016-09-12 21:26   ` Martin Blumenstingl
2016-09-12 21:26     ` Martin Blumenstingl
2016-09-17 21:23     ` André Roth
2016-09-17 21:23       ` André Roth
2016-09-26  6:17       ` Giuseppe CAVALLARO
2016-09-26  6:17         ` Giuseppe CAVALLARO
2016-10-01 15:58         ` Martin Blumenstingl
2016-10-01 15:58           ` Martin Blumenstingl
2016-11-03 16:36           ` Jerome Brunet
2016-11-03 16:36             ` Jerome Brunet
2016-11-05 12:20             ` Martin Blumenstingl
2016-11-05 12:20               ` Martin Blumenstingl
2016-11-13 19:20             ` André Roth
2016-11-13 19:20               ` André Roth
     [not found] ` <216F2694-1C1D-44DA-AC15-57ED15C24BBE@bluematt.me>
2016-09-12 21:29   ` Martin Blumenstingl
2016-09-12 21:29     ` Martin Blumenstingl
2016-09-14 15:30 ` Giuseppe CAVALLARO
2016-09-14 15:30   ` Giuseppe CAVALLARO
2016-09-18 20:42   ` André Roth [this message]
2016-09-18 20:42     ` André Roth
2016-09-19  5:38     ` Giuseppe CAVALLARO
2016-09-19  5:38       ` Giuseppe CAVALLARO
2016-10-01 20:15   ` Martin Blumenstingl
2016-10-01 20:15     ` Martin Blumenstingl
2016-10-01 20:40     ` Martin Blumenstingl
2016-10-01 20:40       ` Martin Blumenstingl
2016-10-31 10:25     ` André Roth
2016-10-31 10:25       ` André Roth
2016-11-03 16:57       ` Jerome Brunet
2016-11-03 16:57         ` Jerome Brunet
2016-11-07 10:59         ` Giuseppe CAVALLARO
2016-11-07 10:59           ` Giuseppe CAVALLARO
2016-11-07 17:37           ` Martin Blumenstingl
2016-11-07 17:37             ` Martin Blumenstingl
2016-11-14  7:47             ` Giuseppe CAVALLARO
2016-11-14  7:47               ` Giuseppe CAVALLARO
2016-11-14 11:02               ` Jerome Brunet
2016-11-14 11:02                 ` Jerome Brunet
2016-11-14 15:00             ` Andreas Färber
2016-11-14 15:00               ` Andreas Färber
2016-11-15 11:27               ` Jerome Brunet
2016-11-15 11:27                 ` Jerome Brunet
2016-11-13 19:13         ` André Roth
2016-11-13 19:13           ` André Roth
2016-11-14 10:49           ` Jerome Brunet
2016-11-14 10:49             ` Jerome Brunet
2016-11-17 18:44             ` André Roth
2016-11-17 18:44               ` André Roth
2016-11-17 21:47               ` Jerome Brunet
2016-11-17 21:47                 ` Jerome Brunet
2016-10-01 20:26   ` Martin Blumenstingl
2016-10-01 20:26     ` Martin Blumenstingl

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