Re: clocksource_watchdog causing scheduling of timers every second (was [v13] support "task_isolation" mode)

On 8/11/2016 7:58 AM, Frederic Weisbecker wrote:

quoted

Arguably we should issue a boot time warning if NOHZ_FULL is configured

quoted

and the TSC watchdog is running.

That's a very good idea! We do that when tsc is unstable but indeed we can't
seriously run NOHZ_FULL on a non-reliable tsc.

I'll take care of that warning.

Thanks.  So I will drop Christoph's patch to run the TSC watchdog on just
housekeeping cores and we will rely on the "boot time warning" instead.

-- 
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com