Messages in this thread | | | From | Kyle Moffett <> | Subject | Re: [PATCH] Add support for deferrable timers (respun-Mar28) | Date | Thu, 29 Mar 2007 07:51:15 -0400 |
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On Mar 29, 2007, at 07:41:12, Andi Kleen wrote: >> ondemand is the biggest offender and the patch below reduces the >> number of interrupts by 50% or more (depending on HZ) on different >> test systems here. > > Cool! > >> Yes. There are quite a few other timers inside kernel that can be >> migrated. I will use timer_stats and track others and send in the >> patches soon. > > Longer term it might make sense to even expose this as a option to > user space. Maybe as a new timer in setitimer()? This might safe > power with "wiggling desktop applets" too.
Might also be useful to add an extra option to "top" to reduce the polling frequency if the system is otherwise idle. A fixed 30-sec timer and a deferrable 1-sec timer or somesuch?
Cheers, Kyle Moffett
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