On Monday 28 May 2007, Thomas Gleixner wrote: > On Mon, 2007-05-28 at 19:44 +0200, Maximilian Engelhardt wrote: > > > Can you please keep CONFIG_HIGH_RES_TIMERS and CONFIG_NOHZ and try the > > > following combinations on the kernel command line: > > > > > > 1) highres=off nohz=off (should be the same as your working config) > > > 2) highres=off > > > 3) nohz=off > > > > I tested this with my 2.6.22-rc3 kernel, here are the results: > > > > without any special boot parameters: problem does appear > > highres=off nohz=off: problem does not appear > > highres=off: problem does not appear > > nohz=off: problem does appear > > Is there any other strange behavior of the high res enabled kernel than > the b44 problem ?
I didn't notice anything in the past (as I wrote). But today I did some tests for an updated version of the p54 mac80211 wlan driver and I noticed exactly the same problem: when booting with highres=off everything is fine. But when I boot an highres enabled kernel and I do the iperf-test with the p54 driver, my systems becomes unresponsive during the test. It seems to be exactly the same problem I have with the b44 driver. So this might not be a bug in the b44 code but a bug somewhere in the linux networking code. I did the test with an 2.6.22-rc3-git4 kernel and the p54 driver built external as module. Maxi
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