Am 21.02.2019 um 18:46 schrieb Jerome Brunet: > On Thu, 2019-02-21 at 18:27 +0100, Simon Huelck wrote: >> Hi, >> >> >> >> this was changed recently, with a patch for the EEE stuff , see here: >> >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.0-rc7&id=e35e26b26e955c53e61c154ba26b9bb15da6b858 > Hu, I was not aware this finally went through. Good ! > As explained in the patch and by Jose, the GMAC should be using IRQ_LEVEL. > > The realtek PHY has EEE enabled by default. Having this enabled generates a > lot of (Low Power) Interrupts. > > Previously, when the GMAC used IRQ_EDGE. Because it is wrong, we would > eventually miss an IRQ and the interface would just die. Unfortunately, it was > not that easy find out. > > 2 years ago, we just noticed that disabling EEE would make the failure go > away. Forcing this EEE feature off through DT was merely a work around. > > Now that the real cause of the problem is known, there is no reason to keep > this hack around. > > Whether EEE adds a performance penality and why, is another topic. > As Jose pointed out, you can disable EEE at runtime, using ethtool. > > Jerome > Hi,
i tested the latest patches of **next-20190222, there were some stmmac improvements.** ** ** **For the topic i got , the performance stayed identical.** **C:\Users\Simon\Downloads\iperf3.6_64bit\iperf3.6_64bit>iperf3.exe -c 10.10.11.1 -i1 warning: Ignoring nonsense TCP MSS 0 Connecting to host 10.10.11.1, port 5201 [ 5] local 10.10.11.100 port 50830 connected to 10.10.11.1 port 5201 [ ID] Interval Transfer Bitrate [ 5] 0.00-1.00 sec 78.9 MBytes 661 Mbits/sec [ 5] 1.00-2.00 sec 79.1 MBytes 664 Mbits/sec [ 5] 2.00-3.00 sec 79.4 MBytes 666 Mbits/sec [ 5] 3.00-4.00 sec 34.4 MBytes 288 Mbits/sec [ 5] 4.00-5.00 sec 16.1 MBytes 135 Mbits/sec [ 5] 5.00-6.00 sec 15.8 MBytes 132 Mbits/sec [ 5] 6.00-7.00 sec 14.2 MBytes 120 Mbits/sec [ 5] 7.00-8.00 sec 15.6 MBytes 131 Mbits/sec [ 5] 8.00-9.00 sec 14.9 MBytes 125 Mbits/sec [ 5] 9.00-10.00 sec 15.0 MBytes 126 Mbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate [ 5] 0.00-10.00 sec 363 MBytes 305 Mbits/sec sender [ 5] 0.00-10.04 sec 363 MBytes 303 Mbits/sec receiver ** **its clearly visible when i activated the other stream for getting duplex load ... The highest rate also stays alot under the possible 930MBits that i have seen earlier with 4.14. ** ** ** **the parallel stream reached around 450Mbits , which almost sums up to 660Mbits. This is what i meant when i said that duplex might be broken. ** ** ** **Connecting to host 10.10.11.100, port 5201 [ 5] local 10.10.11.1 port 38658 connected to 10.10.11.100 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 62.9 MBytes 528 Mbits/sec 0 65.6 KBytes [ 5] 1.00-2.00 sec 56.9 MBytes 477 Mbits/sec 0 65.6 KBytes [ 5] 2.00-3.00 sec 55.9 MBytes 469 Mbits/sec 0 65.6 KBytes [ 5] 3.00-4.00 sec 53.0 MBytes 445 Mbits/sec 0 65.6 KBytes [ 5] 4.00-5.00 sec 54.3 MBytes 455 Mbits/sec 0 65.6 KBytes [ 5] 5.00-6.00 sec 54.8 MBytes 460 Mbits/sec 0 65.6 KBytes [ 5] 6.00-7.00 sec 45.3 MBytes 380 Mbits/sec 0 65.6 KBytes [ 5] 7.00-8.00 sec 51.2 MBytes 429 Mbits/sec 0 65.6 KBytes [ 5] 8.00-9.00 sec 56.1 MBytes 470 Mbits/sec 0 65.6 KBytes [ 5] 9.00-10.00 sec 55.3 MBytes 464 Mbits/sec 0 65.6 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 546 MBytes 458 Mbits/sec 0 sender [ 5] 0.00-10.00 sec 545 MBytes 457 Mbits/sec receiver** ** ** **regards,** **Simon ** ** **
