Re: [Madwifi-devel] madwifi-ng in AP mode under high data flow hangs my routers

[Petr S. <si...@mu...>]

Hi Daniel,
   I've repeated crashs for madwifi-ng-r1474-20060314 in AP mode and I've
stored console outputs.

   When the same tests were performed for madwifi-ng-r1538-20060502 it 
was STABLE and at all rates and both data directions. Tested with two 
cards CM9 and sparklan WL-760A.

   All is described at my web
http://www.simandl.cz/stranky/linux/atheros/atherose.htm
http://www.simandl.cz/stranky/linux/atheros/atheros.htm

I've used netperf for data transfers and hotsanic for graphing.

For me and my FC5 test setup it seems to be stable now.

Many thanks
Petr



Daniel Wu napsal(a):
> 
> Hi,
> I looked through those pics, but its not very helpful since its missing 
> some of  the kernel panics.
> 
> Please take a look at http://madwifi.org/wiki/DevDocs/KernelOops 
> <http://madwifi.org/wiki/DevDocs/KernelOops>
> and see how to try and grab the whole panic.
> 
> thanks.
> 
> On 4/28/06, *Wang wenjuan* <wwj...@gm... 
> <mailto:wwj...@gm...>> wrote:
> 
>     Hi,
>     I've found this problem too in madwifi-ng-r1531-20060426.
>      
>     Xscale 4xx, linux 2.6.10, ap mode;
>     Always hung in down stream throughput test by NETIQ, and up steam is
>     good;
>      
>     BTW:Old madwifi version down stream test is good too. 
> 
>      
>     2006/4/26, Daniel Wu <dy...@gm... <mailto:dy...@gm...>>:
> 
>         1474 is a pretty old version,
>         please use the latest revision from svn.
> 
> 
> 
>         On 4/26/06, *Petr Simandl* <si...@mu...
>         <mailto:si...@mu...> > wrote:
> 
>             Hi all,
> 
>             short version:
>             I've found that the router in AP mode hangs under high data
>             flows.
>             Reproduced with madwifi-ng-r1474-20060314 and
>             madwifi-ng-0.9.4.5 on my
>             test PC. No log messages only some messages on the screen.
>             Snaps from the test router screen are on the web
>             http://81.0.245.33/data/fotky/madwifi-ng/
>             It behaves the same with CM9, CM10 and sparklan card so I
>             thing there is
>             a driver/system problem.
>             "Old" madwifi with CM9 are stable and it works well.
> 
> 
>             long version:
>                I've installed madwifi-ng for my Sparklan WL-760A and
>             I've installed
>             it on our iGW celeron 400MHz. The router (ip 81.0.245.33
>             <http://81.0.245.33/>) seemed to work
>             ok but it every day rebooted without any message in the log.
>               Then I've tried to transfer a cd image on the router and
>             it caused
>             freeze of the system. It is not critical for the router
>             because I'm
>             using watchdog
>             http://www.simandl.cz/stranky/elektro/resetator/resetator.htm
>             <http://www.simandl.cz/stranky/elektro/resetator/resetator.htm>
>               That time I thought it is a problem of sparklan so I've
>             just changed
>             the card to CM9 but it had the same problem. Any higher data
>             stream
>             locked router.
>             So I have changed back to the old madwifi and it works well
>             from that
>             time (all info can be found on the web http://81.0.245.33/ )
>                Then I've got CM10 and I've built a test machine PII 350
>             and I've
>             reproduced all what was observed in the field. _Any_ card in
>             AP mode
>             with madwifi-ng-r1474-20060314 and madwifi-ng-0.9.4.5
>             drivers locks
>             router with the only message on the screen. Screen shots are
>             located on web
>             http://81.0.245.33/data/fotky/madwifi-ng/
>             I've used FC3 2.6.12-1.1381_FC3 and FC5 2.6.16-1.2080_FC5
>             distribution
>             kernels with hand compiled madwifi and madwifi-ng drivers.
>             Only the router with a card in AP mode hangs. sta mode
>             router works well.
>             It seems like the drive ng in AP mode is unable to handle
>             all interrupts
>             or something like this.
> 
>             regards
>             Petr Simandl
>             http://www.simandl.cz <http://www.simandl.cz/>
>             http://www.simandl.cz/stranky/linux/atheros/atheros.htm
> 
> 
> 
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> 
> 
> 
> 
>     -- 
>     Regards,
>     Wang. 
> 
>