Re: Wakeup latency measured with SCHED_TRACER depends on HZ

2012-11-04 Thread Shawn Guo
On Fri, Nov 02, 2012 at 03:29:50PM +0100, Stanislav Meduna wrote: > On 31.10.2012 22:41, Stanislav Meduna wrote: > > > on an embedded platform using a Freescale i.MX28 ARM processor > > I am experiencing a strange phenomenon - the latencies reported > > are dependent of HZ > > OK, the problem is

Re: Wakeup latency measured with SCHED_TRACER depends on HZ

2012-11-02 Thread Stanislav Meduna
On 31.10.2012 22:41, Stanislav Meduna wrote: > on an embedded platform using a Freescale i.MX28 ARM processor > I am experiencing a strange phenomenon - the latencies reported > are dependent of HZ OK, the problem is that the MXS platform does not setup the scheduler clock so the scheduler only s