Rate problems with iwl3945
Hi,
I wrote yesterday about my peering issues with this driver. After getting the hint that iwlist scan would make it associate, I got that working.
Copying some files I noticed it was slow, though. iwconfig reveals that it's only running at 5.5Mb/s and indeed I only get around 650-700kb/sec copying data. I tried to force it to 54M, but no matter what setting I try with iwconfig rate, it stays at 5.5 and the performance stinks. With ipw3945 I always got around ~3mb/s scp'ing data.
With the risk of sounding rude, is this driver expected to be of production quality? It doesn't link, performance is bad. Am I better off sticking to ipw3945 still? Are there patches out there I can try? Who maintains this driver?
Signature · 1 line
Jens Axboe
Hi,
Quoted 1 line
Copying some files I noticed it was slow, though.
Can you check that the right mode is selected? There's a bugfix pending for mac80211 that makes it select 802.11b mode rather than 802.11g. I don't remember whether I've asked this already so if I did please accept my apology. FWIW, the fix is by me (in all fairness, the regression was also introduced by me) titled "[PATCH v2] mac80211: fix set_channel regression"
johannes
Quoted 10 lines · Johannes Berg
Hi,
Quoted 1 line
Copying some files I noticed it was slow, though.
Can you check that the right mode is selected? There's a bugfix pending for mac80211 that makes it select 802.11b mode rather than 802.11g. I don't remember whether I've asked this already so if I did please accept my apology. FWIW, the fix is by me (in all fairness, the regression was also introduced by me) titled "[PATCH v2] mac80211: fix
set_channelregression"
Indeed, it's running 802.11b. Even so, why is it switching down to 5.5M? Link quality is around 96/100, I'm sitting about a meter away from the AP right now.
So where do I find this fix?
Signature · 1 line
Jens Axboe
Quoted 12 lines · Jens Axboe
Quoted 10 lines · Johannes Berg
Hi,
Quoted 1 line
Copying some files I noticed it was slow, though.
Can you check that the right mode is selected? There's a bugfix pending for mac80211 that makes it select 802.11b mode rather than 802.11g. I don't remember whether I've asked this already so if I did please accept my apology. FWIW, the fix is by me (in all fairness, the regression was also introduced by me) titled "[PATCH v2] mac80211: fix
set_channelregression"
Quoted 5 lines
Indeed, it's running 802.11b. Even so, why is it switching down to 5.5M? Link quality is around 96/100, I'm sitting about a meter away from the AP right now.
So where do I find this fix?
Ah found it, in the wireless git repo. Testing...
Signature · 1 line
Jens Axboe
Quoted 13 lines · Jens Axboe
Quoted 12 lines · Jens Axboe
Quoted 10 lines · Johannes Berg
Hi,
Quoted 1 line
Copying some files I noticed it was slow, though.
Can you check that the right mode is selected? There's a bugfix pending for mac80211 that makes it select 802.11b mode rather than 802.11g. I don't remember whether I've asked this already so if I did please accept my apology. FWIW, the fix is by me (in all fairness, the regression was also introduced by me) titled "[PATCH v2] mac80211: fix
set_channelregression"
Quoted 7 lines
Quoted 5 lines
Indeed, it's running 802.11b. Even so, why is it switching down to 5.5M? Link quality is around 96/100, I'm sitting about a meter away from the AP right now.
So where do I find this fix?
Ah found it, in the wireless git repo. Testing...
That did the trick! It's now running 802.11g, rate 54 Mb/s. And performance is back where it should be, similar to ipw3945.
Thanks a lot for the hint!
Signature · 1 line
Jens Axboe