From: Scott E. <sc...@ju...> - 2014-06-04 15:21:01
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Just checked with iperf, AirStorm COM, 3.2 kernel (because that's what I'm sitting in front of) The load shown by top/htop stayed around 35% for the entire 5 minutes. root@overo:~# iperf -c 192.168.10.8 -t300 ------------------------------------------------------------ Client connecting to 192.168.10.8, TCP port 5001 TCP window size: 19.6 KByte (default) ------------------------------------------------------------ [ 3] local 192.168.10.111 port 40817 connected with 192.168.10.8 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-300.0 sec 3.27 GBytes 93.7 Mbits/sec An 80% load sounds like it might have something to do with how you are sending the data. You aren't likely to beat iperf, but it's provides a benchmark for what the system is capable of. If I'm calculating correctly, 100,000 8-byte points of data should transfer in about 70 msec at 93.7 Mbits/sec. (64 * 100000) / 93,700,000 = 0.068 sec Is that what you see? -- View this message in context: http://gumstix.8.x6.nabble.com/Ethernet-DMA-on-Tobi-Board-tp4969215p4969221.html Sent from the Gumstix mailing list archive at Nabble.com. |