Thanks for reply
what is CONFIG_NO_HZ
can we enable CONFIG_NO_HZ and CONFIG_HZ both in our config
and what the drawback of dynamic CONFIG_NO_HZ tick.
On Tue, Jun 26, 2012 at 10:47 AM, Mulyadi Santosa <mulyadi.santosa@xxxxxxxxx> wrote:
Hi... :)
okay, I am answering it from what I know about HZ impact on x86...
On Tue, Jun 26, 2012 at 12:10 PM, solmac john <johnsolmac@xxxxxxxxx> wrote:
> I am using ARM multicore board and by default
> CONFIG_HZ=250
looks good... a middle safe number, not too high not too low...
it's you who decide...do you want finer grained timer? or coarse one?
> Query: - 1- How to decide HZ for particular hardware
the impact is usually toward latency and responsiveness....together
with preemption model you choose actually.
run your application in that platform and see if it gives you impact.
> 2- Which is the best open source tool to test system
> performance from given HZ.
from my experience, unless you need application that is sensitive in
timing such as MIDI sequencer, you won't notice the difference.
--
regards,
Mulyadi Santosa
Freelance Linux trainer and consultant
blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com
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