Re: rtl8192se: ping router gives mdev of 25387.102???

From: Norbert Preining
Date: Mon Dec 17 2012 - 08:48:50 EST

There we go again, rtl is completely hosed ...

$ ping 192.168.0.1 # this is my router!!!
PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
>From 192.168.0.6 icmp_seq=21 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=22 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=23 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=24 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=25 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=26 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=27 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=28 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=29 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=30 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=31 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=32 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=33 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=34 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=35 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=36 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=37 Destination Host Unreachable
>From 192.168.0.6 icmp_seq=38 Destination Host Unreachable
64 bytes from 192.168.0.1: icmp_req=1 ttl=255 time=38455 ms
64 bytes from 192.168.0.1: icmp_req=2 ttl=255 time=37453 ms
64 bytes from 192.168.0.1: icmp_req=3 ttl=255 time=36445 ms
64 bytes from 192.168.0.1: icmp_req=4 ttl=255 time=35437 ms
64 bytes from 192.168.0.1: icmp_req=5 ttl=255 time=34429 ms
64 bytes from 192.168.0.1: icmp_req=6 ttl=255 time=33421 ms
64 bytes from 192.168.0.1: icmp_req=7 ttl=255 time=32413 ms
64 bytes from 192.168.0.1: icmp_req=8 ttl=255 time=31405 ms
64 bytes from 192.168.0.1: icmp_req=9 ttl=255 time=30397 ms
64 bytes from 192.168.0.1: icmp_req=10 ttl=255 time=29388 ms
64 bytes from 192.168.0.1: icmp_req=11 ttl=255 time=28381 ms
64 bytes from 192.168.0.1: icmp_req=12 ttl=255 time=27373 ms
64 bytes from 192.168.0.1: icmp_req=13 ttl=255 time=26365 ms
64 bytes from 192.168.0.1: icmp_req=14 ttl=255 time=25357 ms
64 bytes from 192.168.0.1: icmp_req=15 ttl=255 time=24349 ms
64 bytes from 192.168.0.1: icmp_req=16 ttl=255 time=23341 ms
64 bytes from 192.168.0.1: icmp_req=17 ttl=255 time=22333 ms
64 bytes from 192.168.0.1: icmp_req=18 ttl=255 time=21325 ms
64 bytes from 192.168.0.1: icmp_req=19 ttl=255 time=20317 ms
64 bytes from 192.168.0.1: icmp_req=20 ttl=255 time=19309 ms
64 bytes from 192.168.0.1: icmp_req=39 ttl=255 time=207 ms
64 bytes from 192.168.0.1: icmp_req=40 ttl=255 time=1.36 ms
64 bytes from 192.168.0.1: icmp_req=41 ttl=255 time=1.22 ms
64 bytes from 192.168.0.1: icmp_req=42 ttl=255 time=1.76 ms
^C
--- 192.168.0.1 ping statistics ---
42 packets transmitted, 24 received, +18 errors, 42% packet loss, time 41261ms
rtt min/avg/max/mdev = 1.229/24079.534/38455.055/11983.493 ms, pipe 39
$


Yeahhhhh.....

we are talking about my router, and a stability that is below
the quality of morse code ...

On Sa, 15 Sep 2012, Norbert Preining wrote:
> Hi Larry, hi all,
>
> On Fr, 14 Sep 2012, wrote:
> > I am running on top of default kernel git, will try wireless-testing, too.
>
> I tried now with wireless-testing from yesterday, and had the same problem.
> Actually, I got even *better* results:
> 64 bytes from 192.168.0.1: icmp_req=75 ttl=255 time=137856 ms
> 64 bytes from 192.168.0.1: icmp_req=76 ttl=255 time=136848 ms
> 64 bytes from 192.168.0.1: icmp_req=78 ttl=255 time=134943 ms
>
> ...
> rtt min/avg/max/mdev = 1.110/46967.879/137856.232/49666.671 ms, pipe 138
>
>
> So now we are mdev of 50secs sometimes ;-)
>
>
> Another interesting things:
> At home I have the problems with the NEC router, but I am now at
> the university. I am writing this email over a very very stable
> ssh link to another server.
>
> Here is the output iof ifconfig:
> $ ifconfig
> eth0 Link encap:Ethernet HWaddr 60:eb:69:c9:0c:ea
> UP BROADCAST MULTICAST MTU:1500 Metric:1
> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
>
> lo Link encap:Local Loopback
> inet addr:127.0.0.1 Mask:255.0.0.0
> UP LOOPBACK RUNNING MTU:16436 Metric:1
> RX packets:20418 errors:0 dropped:0 overruns:0 frame:0
> TX packets:20418 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:1950587 (1.8 MiB) TX bytes:1950587 (1.8 MiB)
>
> wlan0 Link encap:Ethernet HWaddr 88:9f:fa:f9:07:28
> inet addr:150.65.206.200 Bcast:150.65.207.255 Mask:255.255.252.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:232640 errors:0 dropped:1 overruns:0 frame:0
> TX packets:69798 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:85599897 (81.6 MiB) TX bytes:8925832 (8.5 MiB)
>
>
> But the kernel is convinced that I am not connected ...:
> $ iw dev wlan0 link
> Not connected.
> $ iwconfig wlan0
> wlan0 IEEE 802.11bgn ESSID:off/any
> Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm
> Retry long limit:7 RTS thr=2347 B Fragment thr:off
> Encryption key:off
> Power Management:off
>
>
> And no, I guarantee you there is no ethernet cable plugged in ;-)
>
> I can only assume that is a problem with iwconfig/iw being too old,
> although according to the output of iwconfig it is fine:
> # iw --version
> iw version 3.4
> # iwconfig --version
> iwconfig Wireless-Tools version 30
> Compatible with Wireless Extension v11 to v22.
>
> Kernel Currently compiled with Wireless Extension v22.
>
> wlan0 Recommend Wireless Extension v21 or later,
> Currently compiled with Wireless Extension v22.
>
> # uname -a
> Linux tofuschnitzel 3.6.0-rc5-wl+ #19 SMP PREEMPT Fri Sep 14 13:14:15 JST 2012 x86_64 GNU/Linux
>
>
> Best wishes
>
> Norbert
> ------------------------------------------------------------------------
> Norbert Preining preining@{jaist.ac.jp, logic.at, debian.org}
> JAIST, Japan TeX Live & Debian Developer
> DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094
> ------------------------------------------------------------------------
> CHICAGO (n.)
> The foul-smelling wind which precedes an underground railway train.
> --- Douglas Adams, The Meaning of Liff

Best wishes

Norbert
------------------------------------------------------------------------
Norbert Preining preining@{jaist.ac.jp, logic.at, debian.org}
JAIST, Japan TeX Live & Debian Developer
DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094
------------------------------------------------------------------------
SPITTAL OF GLENSHEE (n.)
That which has to be cleaned off castle floors in the morning after a
bagpipe contest or vampire attack.
--- Douglas Adams, The Meaning of Liff
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