From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?44Kr44Kq44CA44Of44Oz44CA44OS44Kn44OD44OX?= Date: Fri, 16 May 2014 01:08:12 +0000 Subject: Re: Ethernet bug at Upstream-v3.15-rcx on Lager. Message-Id: <537564FC.4090905@jinso.co.jp> List-Id: References: <53745E88.7040108@jinso.co.jp> <5374F753.70203@cogentembedded.com> In-Reply-To: <5374F753.70203@cogentembedded.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit To: Sergei Shtylyov Cc: netdev@vger.kernel.org, linux-sh@vger.kernel.org, Magnus Damm , Simon Horman Hi Sergei Thanks for your replying! On 05/16/2014 02:20 AM, Sergei Shtylyov wrote: > Hello. > > On 05/15/2014 10:28 AM, カオ　ミン　ヒェップ wrote: > >> I am Hiep from JINZAI SOLUTION (a Japanese Company). >> Now, I am testing a upstream-v3.15-rc2 on Lager for Renesas RSO. >> I found a problem about Ethernet Driver so I would like to report to >> you. >> The problem is losing data when sending data by UDP: > >> - From Lager board to PC: >> BANDWIDTH from 10M to 70M are good, but they suddenly down 51.2 >> Mbits/sec at 80M >> and 57.8 Mbits/sec at 90 M and 64.2 Mbits/sec at 100M. > > Do you mean 'iperf' tests here? Yes, I used 'iperf' tool to test here. And the results of test these test-cases on upstream-v3.15-rc5 as show below: 79.9 Mbits/sec at 80M, 81.5 Mbits/sec at 90 M and 75.1 Mbits/sec at 100M. > >> - From PC to Lager board: >> Some time when the message of "sh-eth r8a7790-ether eth0: Receive >> FIFO >> Overflow" occurs, >> some of datagrams will be lost as the logs show below: >> 「$ iperf -c 172.16.1.36 -u -b 90M >> ..... >> [ 3] Server Report: >> [ 3] 0.0-10.0 sec 108 MBytes 90.4 Mbits/sec 0.000 ms >> 36/76923 >> (0.047%) >> ..... >> # iperf -s -u >> [ ID] Interval Transfer Bandwidth Jitter >> Lost/Total >> Datagrams >> sh-eth r8a7790-ether eth0: Receive FIFO Overflow >> [ 3] 0.0-10.0 sec 108 MBytes 90.4 Mbits/sec 0.001 ms >> 36/76923 >> (0.047%) > >> Please review it when you have time. > > Please try this patch: > > http://marc.info/?l=linux-netdev&m9602519809181 > I have tested this patch on v3.15.0-rc5-00077-g14186fe, and results are the message of "sh-eth r8a7790-ether eth0: Receive FIFO Overflow" has disappeared and sending datagrams is good. (Bandwidth 10M to 100M: Test with 5/5 times by script and by hand are good) Bests Regards. Hiep. From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?44Kr44Kq44CA44Of44Oz44CA44OS44Kn44OD44OX?= Subject: Re: Ethernet bug at Upstream-v3.15-rcx on Lager. Date: Fri, 16 May 2014 10:08:12 +0900 Message-ID: <537564FC.4090905@jinso.co.jp> References: <53745E88.7040108@jinso.co.jp> <5374F753.70203@cogentembedded.com> Reply-To: cm-hiep@jinso.co.jp Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: netdev@vger.kernel.org, linux-sh@vger.kernel.org, Magnus Damm , Simon Horman To: Sergei Shtylyov Return-path: In-Reply-To: <5374F753.70203@cogentembedded.com> Sender: linux-sh-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Hi Sergei Thanks for your replying! On 05/16/2014 02:20 AM, Sergei Shtylyov wrote: > Hello. > > On 05/15/2014 10:28 AM, =E3=82=AB=E3=82=AA=E3=80=80=E3=83=9F=E3=83=B3= =E3=80=80=E3=83=92=E3=82=A7=E3=83=83=E3=83=97 wrote: > >> I am Hiep from JINZAI SOLUTION (a Japanese Company). >> Now, I am testing a upstream-v3.15-rc2 on Lager for Renesas RSO. >> I found a problem about Ethernet Driver so I would like to report to= =20 >> you. >> The problem is losing data when sending data by UDP: > >> - From Lager board to PC: >> BANDWIDTH from 10M to 70M are good, but they suddenly down 51.= 2 >> Mbits/sec at 80M >> and 57.8 Mbits/sec at 90 M and 64.2 Mbits/sec at 100M. > > Do you mean 'iperf' tests here? Yes, I used 'iperf' tool to test here. And the results of test these test-cases on upstream-v3.15-rc5 as show=20 below: 79.9 Mbits/sec at 80M, 81.5 Mbits/sec at 90 M and 75.1 Mbits/sec at 100= M. > >> - From PC to Lager board: >> Some time when the message of "sh-eth r8a7790-ether eth0: Receiv= e=20 >> FIFO >> Overflow" occurs, >> some of datagrams will be lost as the logs show below: >> =E3=80=8C$ iperf -c 172.16.1.36 -u -b 90M >> ..... >> [ 3] Server Report: >> [ 3] 0.0-10.0 sec 108 MBytes 90.4 Mbits/sec 0.000 ms=20 >> 36/76923 >> (0.047%) >> ..... >> # iperf -s -u >> [ ID] Interval Transfer Bandwidth Jitter=20 >> Lost/Total >> Datagrams >> sh-eth r8a7790-ether eth0: Receive FIFO Overflow >> [ 3] 0.0-10.0 sec 108 MBytes 90.4 Mbits/sec 0.001 ms=20 >> 36/76923 >> (0.047%) > >> Please review it when you have time. > > Please try this patch: > > http://marc.info/?l=3Dlinux-netdev&m=3D139602519809181 > I have tested this patch on v3.15.0-rc5-00077-g14186fe, and results are= =20 the message of "sh-eth r8a7790-ether eth0: Receive FIFO Overflow" has disappeared and=20 sending datagrams is good. (Bandwidth 10M to 100M: Test with 5/5 times by script and by hand are g= ood) Bests Regards. Hiep.