Hi 工程师们
最近项目在评估RZ/G2UL这款MCU，在用iperf3测试以太网速率时发现速率只能达到600Mbit/sec，偶尔还会有400M的情况，以下为log作为参考，请问可能是什么原因导致的？目前软件使用的是3.0.6.谢谢！
--------------------------------------------
[11:28:57:996]root@smarc-rzg2ul:~# iperf3 -c 192.168.1.111 [11:28:58:058]Connecting to host 192.168.1.111, port 5201 [11:28:58:060][ 5] local 192.168.1.100 port 60108 connected to 192.168.1.111 port 5201 [11:28:59:104][ ID] Interval Transfer Bitrate Retr Cwnd [11:28:59:112][ 5] 0.00-1.01 sec 73.1 MBytes 609 Mbits/sec 0 264 KBytes [11:29:00:104][ 5] 1.01-2.01 sec 73.2 MBytes 614 Mbits/sec 0 301 KBytes [11:29:01:102][ 5] 2.01-3.01 sec 73.1 MBytes 614 Mbits/sec 32 256 KBytes [11:29:02:095][ 5] 3.01-4.00 sec 76.5 MBytes 644 Mbits/sec 0 304 KBytes [11:29:03:097][ 5] 4.00-5.00 sec 88.6 MBytes 743 Mbits/sec 9 249 KBytes [11:29:04:099][ 5] 5.00-6.00 sec 87.2 MBytes 731 Mbits/sec 9 296 KBytes [11:29:05:097][ 5] 6.00-7.00 sec 85.6 MBytes 718 Mbits/sec 9 305 KBytes [11:29:06:096][ 5] 7.00-8.00 sec 88.8 MBytes 745 Mbits/sec 0 337 KBytes [11:29:07:097][ 5] 8.00-9.00 sec 88.2 MBytes 740 Mbits/sec 0 345 KBytes [11:29:08:177][ 5] 9.00-10.00 sec 85.4 MBytes 716 Mbits/sec 0 365 KBytes [11:29:08:178]- - - - - - - - - - - - - - - - - - - - - - - - - [11:29:08:178][ ID] Interval Transfer Bitrate Retr [11:29:08:178][ 5] 0.00-10.00 sec 820 MBytes 687 Mbits/sec 59 sender [11:29:08:178][ 5] 0.00-10.00 sec 819 MBytes 687 Mbits/sec receiver [11:29:08:178] [11:29:08:180]iperf Done. [11:29:22:581]root@smarc-rzg2ul:~# [11:29:23:813]root@smarc-rzg2ul:~# iperf3 -c 192.168.1.111 [11:29:23:832]Connecting to host 192.168.1.111, port 5201 [11:29:23:851][ 5] local 192.168.1.100 port 57192 connected to 192.168.1.111 port 5201 [11:29:24:905][ ID] Interval Transfer Bitrate Retr Cwnd [11:29:24:911][ 5] 0.00-1.02 sec 72.3 MBytes 597 Mbits/sec 13 209 KBytes [11:29:25:900][ 5] 1.02-2.01 sec 71.6 MBytes 603 Mbits/sec 0 252 KBytes [11:29:26:891][ 5] 2.01-3.00 sec 62.1 MBytes 527 Mbits/sec 112 288 KBytes [11:29:27:889][ 5] 3.00-4.00 sec 67.2 MBytes 564 Mbits/sec 94 328 KBytes [11:29:28:891][ 5] 4.00-5.00 sec 59.2 MBytes 497 Mbits/sec 94 188 KBytes [11:29:29:889][ 5] 5.00-6.00 sec 56.2 MBytes 472 Mbits/sec *** 259 KBytes [11:29:30:890][ 5] 6.00-7.00 sec 47.9 MBytes 402 Mbits/sec 0 373 KBytes [11:29:31:891][ 5] 7.00-8.00 sec 34.7 MBytes 291 Mbits/sec 0 440 KBytes [11:29:32:891][ 5] 8.00-9.00 sec 30.0 MBytes 252 Mbits/sec 45 356 KBytes [11:29:34:019][ 5] 9.00-10.00 sec 29.8 MBytes 250 Mbits/sec 199 287 KBytes [11:29:34:020]- - - - - - - - - - - - - - - - - - - - - - - - - [11:29:34:020][ ID] Interval Transfer Bitrate Retr [11:29:34:022][ 5] 0.00-10.00 sec 531 MBytes 445 Mbits/sec 621 sender [11:29:34:041][ 5] 0.00-10.00 sec 530 MBytes 445 Mbits/sec receiver [11:29:34:041] [11:29:34:042]iperf Done.
你可参考附件的补丁：
community-ja.renesas.com/.../txrx_2D00_hardware_2D00_checksum.zip
使能TX RX 校验和硬件计算后再测试一下