Re: [BUG] perf: multiplexing and hotplug CPU problem

2012-09-12 Thread Stephane Eranian
On Wed, Sep 12, 2012 at 4:47 PM, Peter Zijlstra wrote: > On Wed, 2012-09-12 at 16:40 +0200, Stephane Eranian wrote: >> Hi, >> >> As I was debugging my hrtimer patch, I ran a few tests >> with hotplug CPU. In others words, I offline a CPU while >> there is an active monitoring session which causes

Re: [BUG] perf: multiplexing and hotplug CPU problem

2012-09-12 Thread Peter Zijlstra
On Wed, 2012-09-12 at 16:40 +0200, Stephane Eranian wrote: > Hi, > > As I was debugging my hrtimer patch, I ran a few tests > with hotplug CPU. In others words, I offline a CPU while > there is an active monitoring session which causes multiplexing. > > When the CPU goes down, all is well. But wh

[BUG] perf: multiplexing and hotplug CPU problem

2012-09-12 Thread Stephane Eranian
Hi, As I was debugging my hrtimer patch, I ran a few tests with hotplug CPU. In others words, I offline a CPU while there is an active monitoring session which causes multiplexing. When the CPU goes down, all is well. But when it comes back, things go wrong. No kernel crashes but wrong results an

cpu problem

2001-05-15 Thread vivek ramachandran
i am not suscribed to this list so please cc the comments and replies to vivek_ramachandran@rediffmailcom i have an amd k6-2(?) processor.i compiled the latest 2.4.4 kernel with cpu ak k6-2.i got the following error "loading linux uncompressing linux.. ok,booting kernel" an