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 <[email protected] > wrote: > Hi... :) > > On Tue, Jun 26, 2012 at 12:10 PM, solmac john <[email protected]> > wrote: > > I am using ARM multicore board and by default > > okay, I am answering it from what I know about HZ impact on x86... > > > CONFIG_HZ=250 > > looks good... a middle safe number, not too high not too low... > > > Query: - 1- How to decide HZ for particular hardware > > it's you who decide...do you want finer grained timer? or coarse one? > > the impact is usually toward latency and responsiveness....together > with preemption model you choose actually. > > > 2- Which is the best open source tool to test system > > performance from given HZ. > > run your application in that platform and see if it gives you impact. > 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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