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


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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