* Changing from Minstrel to PID
@ 2009-11-06 21:29 Martín Ernesto Barreyro
2009-11-06 21:48 ` John W. Linville
0 siblings, 1 reply; 14+ messages in thread
From: Martín Ernesto Barreyro @ 2009-11-06 21:29 UTC (permalink / raw)
To: linux-wireless
Hello, I have a rtl8187 wireless card and I've allways have problems
with the rate control using minstrel. So everytime my kernel updates
(recently it went from 2.30 to 2.31) i have to recompile mi kernel
setting pid as my default rate control algorithm.
Is there a way to change that without compiling the kernel?
--
Martín Ernesto Barreyro <barreyromartin@gmail.com>
Analista Universitario en Redes de Datos.
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: Changing from Minstrel to PID
2009-11-06 21:29 Changing from Minstrel to PID Martín Ernesto Barreyro
@ 2009-11-06 21:48 ` John W. Linville
2009-11-06 22:13 ` Martín Ernesto Barreyro
2009-11-06 23:01 ` Martín Ernesto Barreyro
0 siblings, 2 replies; 14+ messages in thread
From: John W. Linville @ 2009-11-06 21:48 UTC (permalink / raw)
To: Martín Ernesto Barreyro; +Cc: linux-wireless
On Fri, Nov 06, 2009 at 06:29:16PM -0300, Martín Ernesto Barreyro wrote:
> Hello, I have a rtl8187 wireless card and I've allways have problems
> with the rate control using minstrel. So everytime my kernel updates
> (recently it went from 2.30 to 2.31) i have to recompile mi kernel
> setting pid as my default rate control algorithm.
>
> Is there a way to change that without compiling the kernel?
No, but I wish there were...patches? Anyone?
John
--
John W. Linville Someday the world will need a hero, and you
linville@tuxdriver.com might be all we have. Be ready.
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: Changing from Minstrel to PID
2009-11-06 21:48 ` John W. Linville
@ 2009-11-06 22:13 ` Martín Ernesto Barreyro
2009-11-06 22:24 ` Bob Copeland
2009-11-06 23:01 ` Martín Ernesto Barreyro
1 sibling, 1 reply; 14+ messages in thread
From: Martín Ernesto Barreyro @ 2009-11-06 22:13 UTC (permalink / raw)
To: John W. Linville; +Cc: linux-wireless
El vie, 06-11-2009 a las 16:48 -0500, John W. Linville escribió:
> On Fri, Nov 06, 2009 at 06:29:16PM -0300, Martín Ernesto Barreyro wrote:
> > Hello, I have a rtl8187 wireless card and I've allways have problems
> > with the rate control using minstrel. So everytime my kernel updates
> > (recently it went from 2.30 to 2.31) i have to recompile mi kernel
> > setting pid as my default rate control algorithm.
> >
> > Is there a way to change that without compiling the kernel?
>
> No, but I wish there were...patches? Anyone?
Sorry for my ignorance, but how could I send a parameter to a module or
use a configuration file? could be with sysctl?
--
Martín Ernesto Barreyro <barreyromartin@gmail.com>
Analista Universitario en Redes de Datos.
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: Changing from Minstrel to PID
2009-11-06 22:13 ` Martín Ernesto Barreyro
@ 2009-11-06 22:24 ` Bob Copeland
2009-11-06 22:40 ` Martín Ernesto Barreyro
2009-11-07 13:43 ` John W. Linville
0 siblings, 2 replies; 14+ messages in thread
From: Bob Copeland @ 2009-11-06 22:24 UTC (permalink / raw)
To: Martín Ernesto Barreyro; +Cc: John W. Linville, linux-wireless
On Fri, Nov 6, 2009 at 5:13 PM, Martín Ernesto Barreyro
<barreyromartin@gmail.com> wrote:
>> No, but I wish there were...patches? Anyone?
>
> Sorry for my ignorance, but how could I send a parameter to a module or
> use a configuration file? could be with sysctl?
You do have to compile them both, but once you do, if you
have debugfs mounted, you can do:
echo 'pid' > /debug/ieee80211/phy0/rc/name
to switch to pid.
--
Bob Copeland %% www.bobcopeland.com
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: Changing from Minstrel to PID
2009-11-06 22:24 ` Bob Copeland
@ 2009-11-06 22:40 ` Martín Ernesto Barreyro
2009-11-07 13:43 ` John W. Linville
1 sibling, 0 replies; 14+ messages in thread
From: Martín Ernesto Barreyro @ 2009-11-06 22:40 UTC (permalink / raw)
To: Bob Copeland; +Cc: John W. Linville, linux-wireless
El vie, 06-11-2009 a las 17:24 -0500, Bob Copeland escribió:
> On Fri, Nov 6, 2009 at 5:13 PM, Martín Ernesto Barreyro
> <barreyromartin@gmail.com> wrote:
> >> No, but I wish there were...patches? Anyone?
> >
> > Sorry for my ignorance, but how could I send a parameter to a module or
> > use a configuration file? could be with sysctl?
>
> You do have to compile them both, but once you do, if you
> have debugfs mounted, you can do:
>
> echo 'pid' > /debug/ieee80211/phy0/rc/name
>
> to switch to pid.
>
Humm, if thats the only way, its better to recompile and forget about
it.
It would be nice if a could change some file in /etc and never care for
kernel upgrades.
I don't know much about kernel developing, i'm just wondering
Something better than adding echo 'pid' > /debug/ieee80211/phy0/rc/name
to rc.local
--
Martín Ernesto Barreyro <barreyromartin@gmail.com>
Analista Universitario en Redes de Datos.
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: Changing from Minstrel to PID
2009-11-06 21:48 ` John W. Linville
2009-11-06 22:13 ` Martín Ernesto Barreyro
@ 2009-11-06 23:01 ` Martín Ernesto Barreyro
2009-11-07 12:18 ` Hin-Tak Leung
2009-11-07 13:42 ` John W. Linville
1 sibling, 2 replies; 14+ messages in thread
From: Martín Ernesto Barreyro @ 2009-11-06 23:01 UTC (permalink / raw)
To: John W. Linville; +Cc: linux-wireless
El vie, 06-11-2009 a las 16:48 -0500, John W. Linville escribió:
> On Fri, Nov 06, 2009 at 06:29:16PM -0300, Martín Ernesto Barreyro wrote:
> > Hello, I have a rtl8187 wireless card and I've allways have problems
> > with the rate control using minstrel. So everytime my kernel updates
> > (recently it went from 2.30 to 2.31) i have to recompile mi kernel
> > setting pid as my default rate control algorithm.
> >
> > Is there a way to change that without compiling the kernel?
>
> No, but I wish there were...patches? Anyone?
>
> John
I've been searching and it seems that it could be added something like
modprobe mac80211 rc='pid'
Would it be a good idea?
--
Martín Ernesto Barreyro <barreyromartin@gmail.com>
Analista Universitario en Redes de Datos.
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: Changing from Minstrel to PID
2009-11-06 23:01 ` Martín Ernesto Barreyro
@ 2009-11-07 12:18 ` Hin-Tak Leung
[not found] ` <cec7b3dc0911081339g5f838527nf76a15889ecaddbd@mail.gmail.com>
2009-11-07 13:42 ` John W. Linville
1 sibling, 1 reply; 14+ messages in thread
From: Hin-Tak Leung @ 2009-11-07 12:18 UTC (permalink / raw)
To: Martín Ernesto Barreyro; +Cc: John W. Linville, linux-wireless
On Fri, Nov 6, 2009 at 11:01 PM, Martín Ernesto Barreyro
<barreyromartin@gmail.com> wrote:
> El vie, 06-11-2009 a las 16:48 -0500, John W. Linville escribió:
>> On Fri, Nov 06, 2009 at 06:29:16PM -0300, Martín Ernesto Barreyro wrote:
>> > Hello, I have a rtl8187 wireless card and I've allways have problems
>> > with the rate control using minstrel. So everytime my kernel updates
>> > (recently it went from 2.30 to 2.31) i have to recompile mi kernel
>> > setting pid as my default rate control algorithm.
>> >
>> > Is there a way to change that without compiling the kernel?
>>
>> No, but I wish there were...patches? Anyone?
>>
>> John
>
> I've been searching and it seems that it could be added something like
> modprobe mac80211 rc='pid'
>
> Would it be a good idea?
That's a reasonable approach, and it isn't too difficult either -
somebody motivated enough could do a patch...
Hmm, I think I have a question and a suggestion here: what is it you
have problem with minstrel ? I don't care which one but both works
well enough here. Maybe you need that sorted instead.
The other thing is, you can probably patch compat-wireless to do
something similiar or at least experiment with it, as long as your
kernel is configured with most of them as modules. Switching
compat-wireless is quite easy, and particularly with the
'driver-select rtl818x' option you just rebuild about 6 kernel modules
instead of the usual 50+, which makes it quite quick and painless.
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: Changing from Minstrel to PID
2009-11-06 23:01 ` Martín Ernesto Barreyro
2009-11-07 12:18 ` Hin-Tak Leung
@ 2009-11-07 13:42 ` John W. Linville
2009-11-09 12:11 ` Martín Ernesto Barreyro
1 sibling, 1 reply; 14+ messages in thread
From: John W. Linville @ 2009-11-07 13:42 UTC (permalink / raw)
To: Martín Ernesto Barreyro; +Cc: linux-wireless
On Fri, Nov 06, 2009 at 08:01:33PM -0300, Martín Ernesto Barreyro wrote:
> El vie, 06-11-2009 a las 16:48 -0500, John W. Linville escribió:
> > On Fri, Nov 06, 2009 at 06:29:16PM -0300, Martín Ernesto Barreyro wrote:
> > > Hello, I have a rtl8187 wireless card and I've allways have problems
> > > with the rate control using minstrel. So everytime my kernel updates
> > > (recently it went from 2.30 to 2.31) i have to recompile mi kernel
> > > setting pid as my default rate control algorithm.
> > >
> > > Is there a way to change that without compiling the kernel?
> >
> > No, but I wish there were...patches? Anyone?
> >
> > John
>
> I've been searching and it seems that it could be added something like
> modprobe mac80211 rc='pid'
>
> Would it be a good idea?
Well if you are happy with a module option, we already have
ieee80211_default_rc_algo.
John
--
John W. Linville Someday the world will need a hero, and you
linville@tuxdriver.com might be all we have. Be ready.
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: Changing from Minstrel to PID
2009-11-06 22:24 ` Bob Copeland
2009-11-06 22:40 ` Martín Ernesto Barreyro
@ 2009-11-07 13:43 ` John W. Linville
2009-11-07 17:26 ` Bob Copeland
1 sibling, 1 reply; 14+ messages in thread
From: John W. Linville @ 2009-11-07 13:43 UTC (permalink / raw)
To: Bob Copeland; +Cc: Martín Ernesto Barreyro, linux-wireless
On Fri, Nov 06, 2009 at 05:24:47PM -0500, Bob Copeland wrote:
> On Fri, Nov 6, 2009 at 5:13 PM, Martín Ernesto Barreyro
> <barreyromartin@gmail.com> wrote:
> >> No, but I wish there were...patches? Anyone?
> >
> > Sorry for my ignorance, but how could I send a parameter to a module or
> > use a configuration file? could be with sysctl?
>
> You do have to compile them both, but once you do, if you
> have debugfs mounted, you can do:
>
> echo 'pid' > /debug/ieee80211/phy0/rc/name
>
> to switch to pid.
Does that work? I thought that was only informational (and readonly)?
John
--
John W. Linville Someday the world will need a hero, and you
linville@tuxdriver.com might be all we have. Be ready.
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: Changing from Minstrel to PID
2009-11-07 13:43 ` John W. Linville
@ 2009-11-07 17:26 ` Bob Copeland
0 siblings, 0 replies; 14+ messages in thread
From: Bob Copeland @ 2009-11-07 17:26 UTC (permalink / raw)
To: John W. Linville; +Cc: Martín Ernesto Barreyro, linux-wireless
On Sat, Nov 07, 2009 at 08:43:30AM -0500, John W. Linville wrote:
> > echo 'pid' > /debug/ieee80211/phy0/rc/name
> >
> > to switch to pid.
>
> Does that work? I thought that was only informational (and readonly)?
Oh, yes, you are right. I was thinking of the ieee80211_default_rc_algo
modparam for mac80211.
--
Bob Copeland %% www.bobcopeland.com
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: Changing from Minstrel to PID
[not found] ` <cec7b3dc0911081339g5f838527nf76a15889ecaddbd@mail.gmail.com>
@ 2009-11-08 23:38 ` Hin-Tak Leung
2009-11-10 2:18 ` Martín Ernesto Barreyro
0 siblings, 1 reply; 14+ messages in thread
From: Hin-Tak Leung @ 2009-11-08 23:38 UTC (permalink / raw)
To: Martín Ernesto Barreyro; +Cc: John W. Linville, linux-wireless
On Sun, Nov 8, 2009 at 9:39 PM, Martín Ernesto Barreyro
<barreyromartin@gmail.com> wrote:
> I don't know, I'll post the minstrel statistics, maybe it'll help you.Some
> months ago the rate control wasn't working at all, and Larry took care of
> it. Since that both algorithms started working, the count of retrys was
> missing at that time.
> Both algorithms started working, but minstrel sometimes works for while but
> then goes to the max rate, in my case 54mbps if i a don't change it to other
> with iwconfig, e.g iwconfig wlan0 rate 11M auto
I am sure somebody with more experience with tuning mistrel can give
you some help...
>> The other thing is, you can probably patch compat-wireless to do
>> something similiar or at least experiment with it, as long as your
>> kernel is configured with most of them as modules. Switching
>> compat-wireless is quite easy, and particularly with the
>> 'driver-select rtl818x' option you just rebuild about 6 kernel modules
>> instead of the usual 50+, which makes it quite quick and painless.
>
>
> You are saying that i could give it a try for adding the option that i was
> asking for?
> Iill give it a shot but i don't know how many time will it take me
Yes, compat-wlreless is useful for trying out small patches. Adding a
module parameter isn't too much trouble, i think - and there are
plenty of examples (many kernel module do parameters).
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: Changing from Minstrel to PID
2009-11-07 13:42 ` John W. Linville
@ 2009-11-09 12:11 ` Martín Ernesto Barreyro
2009-11-09 15:57 ` Hin-Tak Leung
0 siblings, 1 reply; 14+ messages in thread
From: Martín Ernesto Barreyro @ 2009-11-09 12:11 UTC (permalink / raw)
To: John W. Linville; +Cc: linux-wireless
2009/11/7 John W. Linville <linville@tuxdriver.com>:
> On Fri, Nov 06, 2009 at 08:01:33PM -0300, Martín Ernesto Barreyro wrote:
>> El vie, 06-11-2009 a las 16:48 -0500, John W. Linville escribió:
>> > On Fri, Nov 06, 2009 at 06:29:16PM -0300, Martín Ernesto Barreyro wrote:
>> > > Hello, I have a rtl8187 wireless card and I've allways have problems
>> > > with the rate control using minstrel. So everytime my kernel updates
>> > > (recently it went from 2.30 to 2.31) i have to recompile mi kernel
>> > > setting pid as my default rate control algorithm.
>> > >
>> > > Is there a way to change that without compiling the kernel?
>> >
>> > No, but I wish there were...patches? Anyone?
>> >
>> > John
>>
>> I've been searching and it seems that it could be added something like
>> modprobe mac80211 rc='pid'
>>
>> Would it be a good idea?
>
> Well if you are happy with a module option, we already have
> ieee80211_default_rc_algo.
>
> John
> --
> John W. Linville Someday the world will need a hero, and you
> linville@tuxdriver.com might be all we have. Be ready.
>
Yes I'm happy, I'll try it.
Is there any other way that it can be approached?
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: Changing from Minstrel to PID
2009-11-09 12:11 ` Martín Ernesto Barreyro
@ 2009-11-09 15:57 ` Hin-Tak Leung
0 siblings, 0 replies; 14+ messages in thread
From: Hin-Tak Leung @ 2009-11-09 15:57 UTC (permalink / raw)
To: Martín Ernesto Barreyro; +Cc: John W. Linville, linux-wireless
On Mon, Nov 9, 2009 at 12:11 PM, Martín Ernesto Barreyro
<barreyromartin@gmail.com> wrote:
> 2009/11/7 John W. Linville <linville@tuxdriver.com>:
>> On Fri, Nov 06, 2009 at 08:01:33PM -0300, Martín Ernesto Barreyro wrote:
>>> El vie, 06-11-2009 a las 16:48 -0500, John W. Linville escribió:
>>> > On Fri, Nov 06, 2009 at 06:29:16PM -0300, Martín Ernesto Barreyro wrote:
>>> > > Hello, I have a rtl8187 wireless card and I've allways have problems
>>> > > with the rate control using minstrel. So everytime my kernel updates
>>> > > (recently it went from 2.30 to 2.31) i have to recompile mi kernel
>>> > > setting pid as my default rate control algorithm.
>>> > >
>>> > > Is there a way to change that without compiling the kernel?
>>> >
>>> > No, but I wish there were...patches? Anyone?
>>> >
>>> > John
>>>
>>> I've been searching and it seems that it could be added something like
>>> modprobe mac80211 rc='pid'
>>>
>>> Would it be a good idea?
>>
>> Well if you are happy with a module option, we already have
>> ieee80211_default_rc_algo.
>>
>> John
>> --
>> John W. Linville Someday the world will need a hero, and you
>> linville@tuxdriver.com might be all we have. Be ready.
>>
>
> Yes I'm happy, I'll try it.
> Is there any other way that it can be approached?
> --
> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
I suppose echo something into the /proc file system as john suggested
in an earlier post would be even better than a module option. That's a
bit more difficult to module option (module option is pretty much the
blunt hammer and you can replace any behavior with any other bahavor
with it, I think) as it makes the algorithm switch-able at run-time,
and that might be a little more tricky as one has to probably stop a
few things and restart a few things in the kernel... and I don't mean
debugfs, although since it is already in debugfs it might be easier
just to move that code out to general use.
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: Changing from Minstrel to PID
2009-11-08 23:38 ` Hin-Tak Leung
@ 2009-11-10 2:18 ` Martín Ernesto Barreyro
0 siblings, 0 replies; 14+ messages in thread
From: Martín Ernesto Barreyro @ 2009-11-10 2:18 UTC (permalink / raw)
To: Hin-Tak Leung; +Cc: John W. Linville, linux-wireless
El dom, 08-11-2009 a las 23:38 +0000, Hin-Tak Leung escribió:
> On Sun, Nov 8, 2009 at 9:39 PM, Martín Ernesto Barreyro
> <barreyromartin@gmail.com> wrote:
>
> > I don't know, I'll post the minstrel statistics, maybe it'll help you.Some
> > months ago the rate control wasn't working at all, and Larry took care of
> > it. Since that both algorithms started working, the count of retrys was
> > missing at that time.
> > Both algorithms started working, but minstrel sometimes works for while but
> > then goes to the max rate, in my case 54mbps if i a don't change it to other
> > with iwconfig, e.g iwconfig wlan0 rate 11M auto
>
> I am sure somebody with more experience with tuning mistrel can give
> you some help...
>
> >> The other thing is, you can probably patch compat-wireless to do
> >> something similiar or at least experiment with it, as long as your
> >> kernel is configured with most of them as modules. Switching
> >> compat-wireless is quite easy, and particularly with the
> >> 'driver-select rtl818x' option you just rebuild about 6 kernel modules
> >> instead of the usual 50+, which makes it quite quick and painless.
> >
> >
> > You are saying that i could give it a try for adding the option that i was
> > asking for?
> > Iill give it a shot but i don't know how many time will it take me
>
> Yes, compat-wlreless is useful for trying out small patches. Adding a
> module parameter isn't too much trouble, i think - and there are
> plenty of examples (many kernel module do parameters).
I've my 2.31 kernel running (from archlinux repositories) and
compat-wireless 2009-11-06 and now not even with pid i get it working
good. It goes to the max rate available.
>From the distance that I'm from the AP i have to limit the rate to
11Mbps
I'll compile wireless testing and i'll post the statistics, or if
someone tell the information they need to debug it i'll post it.
--
Martín Ernesto Barreyro <barreyromartin@gmail.com>
Analista Universitario en Redes de Datos.
^ permalink raw reply [flat|nested] 14+ messages in thread
end of thread, other threads:[~2009-11-10 2:16 UTC | newest]
Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2009-11-06 21:29 Changing from Minstrel to PID Martín Ernesto Barreyro
2009-11-06 21:48 ` John W. Linville
2009-11-06 22:13 ` Martín Ernesto Barreyro
2009-11-06 22:24 ` Bob Copeland
2009-11-06 22:40 ` Martín Ernesto Barreyro
2009-11-07 13:43 ` John W. Linville
2009-11-07 17:26 ` Bob Copeland
2009-11-06 23:01 ` Martín Ernesto Barreyro
2009-11-07 12:18 ` Hin-Tak Leung
[not found] ` <cec7b3dc0911081339g5f838527nf76a15889ecaddbd@mail.gmail.com>
2009-11-08 23:38 ` Hin-Tak Leung
2009-11-10 2:18 ` Martín Ernesto Barreyro
2009-11-07 13:42 ` John W. Linville
2009-11-09 12:11 ` Martín Ernesto Barreyro
2009-11-09 15:57 ` Hin-Tak Leung
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