Please file a PR. I may end up getting around to it.
I don't know whether it's 11n TX or 11n RX, but we should really debug it.
-a
On 23 August 2014 12:19, Johannes Dieterich dieterich@gmail.com wrote:
Dear Adrian
thanks a lot for the suggestion! Removing ht indeed improves the throughput
to 1.7 MB/s. Still far from the maximum of my uplink but sufficient for the
time being and much improved.
Concerning the non-existing maintainer: does it in this case even make sense
to file a PR?
Given how common the Intel WLAN NICs (unfortunately) are and how some
notebooks have white lists making a change to e.g. ath impossible, it is a
real bummer that nobody maintains it. Thanks for your work on ath, btw,
those NICs are working great nowadays!
Thanks again for the help!
Johannes
On Wed, Aug 20, 2014 at 12:30 AM, Adrian Chadd adr...@freebsd.org wrote:
Hi,
You can try disabling 11n (ifconfig -ht) but besides that, there's no
real iwn maintainer or anyone who wants to get really nitty gritty
into what the driver is doing. So until that happens, I think we're
short of luck. :(
-a
On 19 August 2014 12:53, Johannes Dieterich dieterich@gmail.com
wrote:
Dear all,
I have a Intel Centrino Advanced-N 6205 WLAN NIC in my Thinkpad using
iwn.
iwn0@pci0:3:0:0:class=0x028000 card=0x13118086 chip=0x00858086
rev=0x34
hdr=0x00
vendor = 'Intel Corporation'
device = 'Centrino Advanced-N 6205 [Taylor Peak]'
class = network
Unfortunately, I only get a rather bad speed using CURRENT (r270098) out
of
the chip. It is connected to an 11n (on the 2.4 GHz band) network:
wlan0: flags=8843UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST metric 0 mtu
1500
nd6 options=29PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL
media: IEEE 802.11 Wireless Ethernet MCS mode 11ng
status: associated
ssid X channel 4 (2427 MHz 11g ht/20) bssid XX
country US authmode WPA2/802.11i privacy ON deftxkey UNDEF
TKIP 2:128-bit txpower 15 bmiss 10 scanvalid 60 bgscan bgscanintvl
300
bgscanidle 250 roam:rssi 7 roam:rate 64 protmode CTS ampdulimit 64k
ampdudensity 8 -amsdutx amsdurx shortgi wme roaming MANUAL
I get a maximum of 900 KB/s of throughput (both in/out, approximated by
copying a large file using scp), within the network and to the outside
world. Running SuSE Linux on the notebook allows me to easily saturate
my
uplink at 3MB/s, didn't then further check within the network. I get
no
log messages on FBSD from iwn and I am not located in a particularly
noisy
neighborhood.
The only performance issue I can find with this chip is one old report
on
Ubuntu (http://ubuntuforums.org/showthread.php?t=1949571), where the 11n
seemed to be the culprit in the driver/firmware. Could this be an issue
for
us as well (firmware problem?)?
As my workhorse is FreeBSD, I'd love to fix this issue. How can I
further
debug this issue and/or provide more data? I know that the status of iwn
in
FBSD is difficult ATM but maybe there is hope?
Best
Johannes
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