DM36x在2.6.37kernel下网络性能如何?
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DM36x的驱动性能数据都可以在下面的wiki网页里找到:
http://processors.wiki.ti.com/index.php/DaVinci_(ARM9)_PSP_Releases#DM36x
DaVinci PSP 03.21.00.04 Device Driver Features and Performance Guide
以太网性能见下:
我分别在kernel2.6.18和2.6.37下用iperf做了测试:
2.6.18 下
# ./iperf -c 192.168.1.70 -w 32768 -d -t 60
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 64.0 KByte (WARNING: requested 32.0 KByte)
------------------------------------------------------------
------------------------------------------------------------
Client connecting to 192.168.1.70, TCP port 5001
TCP window size: 64.0 KByte (WARNING: requested 32.0 KByte)
------------------------------------------------------------
[ 5] local 192.168.1.99 port 4578 connected with 192.168.1.70 port 5001
[ 4] local 192.168.1.99 port 5001 connected with 192.168.1.70 port 4509
[ ID] Interval Transfer Bandwidth
[ 5] 0.0-60.0 sec 325 MBytes 45.4 Mbitsc
[ 4] 0.0-59.9 sec 353 MBytes 49.4 Mbitsc
而在2.6.37下
./iperf -c 192.168.1.70 -w 32768 -d -t 60
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 64.0 KByte (WARNING: requested 32.0 KByte)
------------------------------------------------------------
------------------------------------------------------------
Client connecting to 192.168.1.70, TCP port 5001
TCP window size: 64.0 KByte (WARNING: requested 32.0 KByte)
------------------------------------------------------------
[ 3] local 192.168.1.77 port 55370 connected with 192.168.1.70 port 5001
[ 5] local 192.168.1.77 port 5001 connected with 192.168.1.70 port 4624
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-60.0 sec 248 MBytes 34.6 Mbitsc
[ 5] 0.0-60.0 sec 127 MBytes 17.7 Mbitsc
请问2.6.37下的emac驱动是不是有性能问题?