control channel usermode polling vs runtime "IO check" kernel thread

[Frank Ch. Eigler]

f-turgis wrote:

> [...]  While using systemtap on a SoC with power management enabled
> and "tickless" kernel, I have observed regular wake-ups of
> systemtap/0 kernel thread ever> y scheduler tick. I have related
> that to below observations/conclusions:

I believe all of your observations are correct.  We haven't
sufficiently tuned this aspect of the system, and would appreciate
further advice or help.


- FChE