Re: [ACPI] [PATCH] i386 No Idle HZ aka dynticks v051205

[Pavel Machek <pavel@ucw.cz>]

Hi!

> > The main change to this version is the inclusion of Dominik's patches to
> > cpufreq ondemand, acpi c-states and bus mastering which should start making
> > the potential power saving features of dyntick a reality (thanks!).
> > One buildfix for !CONFIG_NO_IDLE_HZ as well.
> > 
> > If you get strange stalls with this patch then almost certainly it is a
> > problem with dynticks and your apic so booting with the "noapic" option
> > should fix it.
> > 
> > Split out patches, timertop and pmstats utilities and latest patch available
> > here:
> > http://ck.kolivas.org/patches/dyn-ticks/
> > 
> > FAQ:
> > What Hz should I use with dynticks in the config?
> > 1000 to realise the benefits of the power saving features and low latency.
> > 
> > Should I enable timer statistics?
> > Only if you're planning on using the timertop utility to help you recognise
> > the biggest sources of timers currently in use to help you improve power
> > savings.
> 
> Strange. It works okay here (thinkpad x32, configured SMP), but
> something strange is going on with cursor. I use softcursor (normal
> underline but highlight background), and underline no longer blinks
> over it.
> 
> Try:
> 
>     echo -e "\33[10;5000]\33[11;50]\33[?18;0;136c\33[?102m"
> 
> on vanilla and no-idle-hz kernels to see what I mean. I'm using
> framebuffer console here.

Ok, so the problem is in -rc5 mainline, not in dynticks... Perhaps it
is time to get dynticks merged to -mm tree?
								Pavel
-- 
Thanks, Sharp!