Re: [RFC PATCH RT] x86/tsc: Add option to disable tsc clocksource watchdog

2019-03-20 Thread Sebastian Andrzej Siewior
On 2019-03-14 08:09:51 [+0100], Juri Lelli wrote: > Hi, > > On 07/03/19 13:09, Juri Lelli wrote: > > Clocksource watchdog has been found responsible for generating latency > > spikes (in the 10-20 us range) when woken up to check for TSC stability. > > > > Add an option to disable it at boot. >

Re: [RFC PATCH RT] x86/tsc: Add option to disable tsc clocksource watchdog

2019-03-14 Thread Juri Lelli
Hi, On 07/03/19 13:09, Juri Lelli wrote: > Clocksource watchdog has been found responsible for generating latency > spikes (in the 10-20 us range) when woken up to check for TSC stability. > > Add an option to disable it at boot. Gentle ping. Does this make any sense? Thanks, - Juri

[RFC PATCH RT] x86/tsc: Add option to disable tsc clocksource watchdog

2019-03-07 Thread Juri Lelli
Clocksource watchdog has been found responsible for generating latency spikes (in the 10-20 us range) when woken up to check for TSC stability. Add an option to disable it at boot. Signed-off-by: Juri Lelli --- Sending this out as an RFC after yesterday discussion with Thomas on IRC. AFAICT, CL