Re: Ksoftirqd/0 eating all my CPU while transfer

Hi,

 

I have seen similar things on an AP when interference mitigation is turned on.

You can try turning this off using something like:

 

echo 0 > /proc/sys/net/dev/wifi0/intmit

 

(your proc file location might be slightly different). This should free up your CPU but your throughput may suffer depending on the level of interference.

 

Brett

 

________________________________

From: Gleidson Antônio Henriques [mailto:[email protected]] 
Sent: Tuesday, 15 December 2009 10:18 AM
To: [email protected]
Subject: [Madwifi-users] Ksoftirqd/0 eating all my CPU while transfer

 

Hi all,

 

    I'd encountered a problem with different versions of Madwifi + different versions of kernels and I'm totally lost.

    My scenario is: 2 - Alix.2D2 ( One configured as AP and another configured as Station )

                           2 - Wireless Card ( Model: CM9-GP )

                           Madwifi driver version 0.9.4 ( but already tested with latest trunk version )

                           Kernel 2.6.21 ( but already tested against other versions of kernel )

                           

    If i grab one file from AP using the Station, ksoftirqd at AP starts to eat all my CPU until the transfer stops.

    I achieve  3,1 MB/s throughtput rate but I lost my entire CPU.

    

    I don't know how it could be possible but if I install voyage-linux distro 0.6.2 ( with madwifi driver version 0.9.4+r4022.20090513-1+6.0-3 ), I can

    achieve the same throughput without the stress on CPU.

 

    Is there anyone that encountered this kind of problem ?

    

    Thanks in advance,

 

    Gleidson Antonio Henriques

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