1. Here I booted Android without RJ45 cable plugged. I issued: # cat /sys/kernel/debug/usb/usbmon/1u > /sdcard/1.mon.out.11
2. Then I plugged in the cable, got an IP address through DHCP: (panda) # netcfg eth0 dhcp eth0 UP 192.168.50.107/24 0x00001043 42:82:7e:fd:d9:71 3. Then I started a TX using nc command: (panda) # nc -l -p 1032 < /dev/zero & (desktop-pc) $ nc 192.168.50.107 1032 > /dev/null (desktop-pc) $ sudo nethogs nc eth0 0.486 12.532 KB/sec Speed is very poor. 4. I wait for netdev watchdog to bark and stopped the nc on desktop-pc side. Then killed the nc on panda side. And eventually ctrl'ed-C the usbmon dump. On my dmesg, you can see the slow path occurring after TX struggled for a while: http://paste.ubuntu.com/1083276/ The usbmon trace on bus 1: http://paste.ubuntu.com/1083284/ My usb connected devices: http://paste.ubuntu.com/1083292/ Thanks for your kind support, Emeric -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/709245 Title: ARM SMP scheduler performance bug To manage notifications about this bug go to: https://bugs.launchpad.net/linaro-ubuntu/+bug/709245/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
