On Mon, Apr 05, 2010 at 08:38:41AM -0600, Sverre Froyen wrote: > Monitoring the number-of-free-rbufs counter during network traffic, I find > that > it normally stays at 32, occasionally dropping into the twenties. Sometimes, > however, the count will abruptly jump to zero. At this point, the free count > does not recover but remains at zero for a *long* time. The interface does > not > receive any packets as long as the driver has no free rbufs. After about ten > minutes, I see a flurry of calls to iwn_free_rbuf and the free count returns > to > 32. At this point the interface is working properly again.
During the flurry of calls to iwn_free_rbuf(), can you get a backtrace in iwn_free_rbuf()? I hope that will show us what mechanism frees them in a flurry. Dave -- David Young OJC Technologies dyo...@ojctech.com Urbana, IL * (217) 278-3933
