Re: Ksoftirqd/0 eating all my CPU while transfer

Thanks for your response Brett, 

   I tried disable Interference Mitigation but the problem still occurs.
   
   Thanks in advance,

    Gleidson

  ----- Original Message ----- 
  From: Brett Wright 
  To: Gleidson Antônio Henriques ; [email protected] 
  Sent: Tuesday, December 15, 2009 12:23 AM
  Subject: RE: [Madwifi-users] 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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