Re: highres timers break cpu hotplug in 2.6.23-rc5 [was Re: cpu hotplug support broken in 2.6.23-rc3]

2007-09-03 Thread Jeff Chua
On 9/3/07, Pavel Machek <[EMAIL PROTECTED]> wrote: > It gets weirder. With "nohz=off" on commandline, I have to press any > key (generate interrupt?) for echo 1 > online to finish. 2.6.23-rc5 > kernel... but hotplug/unplug works reliably now. > > With nohz=off highres=off I can unplug/replug cpus

highres timers break cpu hotplug in 2.6.23-rc5 [was Re: cpu hotplug support broken in 2.6.23-rc3]

2007-09-03 Thread Pavel Machek
Hi! > > Can you try 20-or-so tests? Mine hangs randomly, so it survived 4 or > > so cycles at one point. > > Mine still survives with this ... with sleep 1 ... > > # for((i=0; i<100; i++)); do echo $i; echo $((i % 2)) > >/sys/devices/system/cpu/cpu1/online; sleep 1; done > > and this as well ..