Re: [Madwifi-users] Ksoftirqd/0 eating all my CPU while transfer
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From: Gleidson A. H. <gle...@pr...> - 2009-12-15 17:09:19
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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 ; mad...@li... 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:gle...@pr...] Sent: Tuesday, 15 December 2009 10:18 AM To: mad...@li... 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 |