Re: 2.6.38: rt2800usb: high latency (1000ms)?

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On Wed, 13 Apr 2011, Ivo Van Doorn wrote:

Hi,

I recall using this driver in staging and it crashing my machine, now thats
its no longer in staging, I thought I'd give it another try..  Using the

The rt2800usb was not in staging but has been inside the main kernel
tree for quite
some time already, the alternative rt2870sta was in staging and will
be removed very soon.

following wireless usb adapter, I'm seeing very high latency when using
the device in Linux, (with Windows, there are no problems).  Using Debian
Testing + wpa_supplicant, using the following USB adapter:

Can you try disabling powersaving?
iwconfig wlan0 power off

Ivo


Hi,

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
64 bytes from wireless-host (192.168.1.2): icmp_req=3 ttl=64 time=0.569 ms
64 bytes from wireless-host (192.168.1.2): icmp_req=4 ttl=64 time=0.686 ms
64 bytes from wireless-host (192.168.1.2): icmp_req=5 ttl=64 time=0.674 ms
64 bytes from wireless-host (192.168.1.2): icmp_req=6 ttl=64 time=1.18 ms
64 bytes from wireless-host (192.168.1.2): icmp_req=7 ttl=64 time=1.77 ms
64 bytes from wireless-host (192.168.1.2): icmp_req=8 ttl=64 time=0.654 ms

Thanks, so its recommend to keep this off then, can that be set as the driver default?

Justin.


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