Ugh! Couldn't you configure the stupid mailing list filter to only drop rich text mails that have [PATCH or [RFC or [RFT in the subject, e.g.? Original mail below. (sorry for the resend, Justin and Ivo). Dan On Wed, Apr 13, 2011 at 9:23 AM, Daniel Halperin <dhalperi@xxxxxxxxxxxxxxxxx> wrote: > > On Wed, Apr 13, 2011 at 9:01 AM, Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx> wrote: >>> >>> Can you try disabling powersaving? >>> iwconfig wlan0 power off >>> >> Wow! That was it, now its interactive again. >> >> 64 bytes from wireless-host (192.168.1.2): icmp_req=1 ttl=64 time=0.581 ms >> 64 bytes from wireless-host (192.168.1.2): icmp_req=2 ttl=64 time=0.647 ms >> >> Thanks, so its recommend to keep this off then, can that be set as the driver default? >> > > That's a bad idea, what you're seeing is likely completely a red herring. Wi-Fi power saving mode saves energy by putting the RF hardware most of the time. This is a Good Thing. > Power save is designed to kick in only when the load is very slow; the client's network stack should automatically disable power save during times of high load, e.g., during a download or a VoIP call. You should run some tests to see if this is actually occurring; there may be a bug in the rtl implementation. > The real problem here is that your ping test has invalid assumptions. One packet/second is not enough load to disable Wi-Fi power save, so you should not see interactive ping times. Again, this is a good thing and something I doubt you want to disable! (Assuming that RTL's implementation isn't fundamentally broken elsewhere) It certainly should NOT be the driver default. > Try again with sudo ping -i 0.01 -s 1400 (e.g., to ping with large packets every 10 ms); this should probably trigger the logic that automatically disables the power saving mode. Or try pinging while doing a 1 Mbit UDP transfer (e.g., with iperf). > Dan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
