On Sat, Nov 04, 2006 at 02:08:00AM +0100, O. Hartmann wrote: > Kris Kennaway wrote: > > On Fri, Nov 03, 2006 at 08:57:21PM +0100, O. Hartmann wrote: > > > >> Compiling FreeBSD's world with make -j2 was never a problem while playing > >> sound or doing other work on screen - but this seems to be a big problem > >> now, even when SCHED_4BSD is used! > >> > >> While compiling world mouse stops and jumps, sound gets distorted. I > >> recognise thsi behaviour also when box is doing minor HD access: mouse > >> pointer stops, keyboard input gets stuck, sound stops playing, window > >> operations (opening/closing) seems to freeze. This got even worse whithin > >> the last two weeks (date when it starts getting this worse unknown). > >> This phenomenon occurs on both i386 and amd64 but is much worse on amd64. > >> On AMD64 very short and small HD activities seems to trigger this > >> 'jumping' and stopping. > >> > >> Both boxes are singel core CPUs, AMD64 is a Athlon 3500+, i386 is a HTT > >> enabled P4 at 3.0 GHz. > >> > >> I do not get any error or system fault, simply this jumping and freezing. > >> > >> On both systems PREEMPTION is enabled in the kernel, but the problem also > >> occurs without this option. > >> > >> Any ideas, suggestion, maybe explanations? > >> > > > > Check for interrupt storms (vmstat -i). > > > > Kris > > > Already already checked, nothing suspicious ...
Use top -S to check what is using the CPU. Kris
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