N900, wl1251: wifi is now slow, even with powersave off

N900, wl1251: wifi is now slow, even with powersave off

[Pavel Machek]

Hi!

Ping to N900:

64 bytes from maemo (10.0.0.8): icmp_seq=187 ttl=64 time=124 ms
64 bytes from maemo (10.0.0.8): icmp_seq=188 ttl=64 time=131 ms
64 bytes from maemo (10.0.0.8): icmp_seq=189 ttl=64 time=66.7 ms
^C
--- maemo ping statistics ---
189 packets transmitted, 189 received, 0% packet loss, time 188742ms
rtt min/avg/max/mdev = 4.382/101.866/453.145/42.395 ms
root@duo:/data/pavel#

Now on n900:

pavel@n900:/my/tui/ofone$ sudo iw dev wlan0 set power_save off
pavel@n900:/my/tui/ofone$

That should bring ping back to < 2 msec range, but nothing changes:

root@duo:/data/pavel# ping maemo
PING maemo (10.0.0.8) 56(84) bytes of data.
64 bytes from maemo (10.0.0.8): icmp_seq=1 ttl=64 time=78.5 ms
64 bytes from maemo (10.0.0.8): icmp_seq=2 ttl=64 time=101 ms
64 bytes from maemo (10.0.0.8): icmp_seq=3 ttl=64 time=18.2 ms
64 bytes from maemo (10.0.0.8): icmp_seq=4 ttl=64 time=37.5 ms
64 bytes from maemo (10.0.0.8): icmp_seq=5 ttl=64 time=58.2 ms
64 bytes from maemo (10.0.0.8): icmp_seq=6 ttl=64 time=77.6 ms
64 bytes from maemo (10.0.0.8): icmp_seq=7 ttl=64 time=98.3 ms
64 bytes from maemo (10.0.0.8): icmp_seq=8 ttl=64 time=118 ms
64 bytes from maemo (10.0.0.8): icmp_seq=9 ttl=64 time=35.8 ms
64 bytes from maemo (10.0.0.8): icmp_seq=10 ttl=64 time=55.7 ms
^C
--- maemo ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9034ms
rtt min/avg/max/mdev = 18.298/68.025/118.223/30.756 ms
root@duo:/data/pavel#

Any ideas what is going on there?

Best regards,
									Pavel


-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

Re: N900, wl1251: wifi is now slow, even with powersave off

[Pavel Machek]

Hi!

> Ping to N900:
> 
> 64 bytes from maemo (10.0.0.8): icmp_seq=187 ttl=64 time=124 ms
> rtt min/avg/max/mdev = 4.382/101.866/453.145/42.395 ms
> root@duo:/data/pavel#
> 
> Now on n900:
> 
> pavel@n900:/my/tui/ofone$ sudo iw dev wlan0 set power_save off
> pavel@n900:/my/tui/ofone$
> 
> That should bring ping back to < 2 msec range, but nothing changes:
> 
> root@duo:/data/pavel# ping maemo
> PING maemo (10.0.0.8) 56(84) bytes of data.
> 64 bytes from maemo (10.0.0.8): icmp_seq=1 ttl=64 time=78.5 ms
> rtt min/avg/max/mdev = 18.298/68.025/118.223/30.756 ms
> root@duo:/data/pavel#
> 
> Any ideas what is going on there?

v4.4: works ok, rtt min/avg/max/mdev = 2.111/2.243/2.524/0.150 ms
v4.5-rc0: can't get wifi to work.
v4.6: slow as described.
v4.7-rc3: slow as described.

Even confirming you see same problem would help :-).

Thanks,
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

Re: N900, wl1251: wifi is now slow, even with powersave off

[Pavel Machek]

On Sun 2016-06-19 00:55:54, Pavel Machek wrote:
> Hi!
> 
> > Ping to N900:
> > 
> > 64 bytes from maemo (10.0.0.8): icmp_seq=187 ttl=64 time=124 ms
> > rtt min/avg/max/mdev = 4.382/101.866/453.145/42.395 ms
> > root@duo:/data/pavel#
> > 
> > Now on n900:
> > 
> > pavel@n900:/my/tui/ofone$ sudo iw dev wlan0 set power_save off
> > pavel@n900:/my/tui/ofone$
> > 
> > That should bring ping back to < 2 msec range, but nothing changes:
> > 
> > root@duo:/data/pavel# ping maemo
> > PING maemo (10.0.0.8) 56(84) bytes of data.
> > 64 bytes from maemo (10.0.0.8): icmp_seq=1 ttl=64 time=78.5 ms
> > rtt min/avg/max/mdev = 18.298/68.025/118.223/30.756 ms
> > root@duo:/data/pavel#
> > 
> > Any ideas what is going on there?
> 
> v4.4: works ok, rtt min/avg/max/mdev = 2.111/2.243/2.524/0.150 ms
> v4.5-rc0: can't get wifi to work.
v4.5: slow as described.
> v4.6: slow as described.
> v4.7-rc3: slow as described.

Hmm. If wifi is truly broken in -rc0, I'm looking for some fun bisect
:-(.

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html