Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1466365

Re: SCHED_DEADLINE cpudeadline.{h,c} fixup

Show all headers | View raw

On Sun, Aug 14, 2016 at 04:27:05PM +0200, Tommaso Cucinotta wrote:
> Hi,
> 
> this is a rework of the cpudeadline bugfix and speed-up patch-set, that
> integrates all comments received so far from Luca, Juri and Peter.
> 
> Compared with the previous post, here:
> -) I'm keeping out the minimally invasive bugfix, as it's already been
>    merged in tip/sched/core
> -) I moved some little code refactory around change_key_dl() out of the
>   (now) 2nd patch, to the 1st one. Now the 2nd (speed-up) patch just
>   changes the heapify_up/down() functions
> -) I rebased on top of commit f0b22e39
> -) I repeated an extensive set of tests through the framework published
>    separately at: https://github.com/tomcucinotta/cpudl-bench
>    repeating new no-behavior-change tests, new heap-consistency tests,
>    and new a/b benchmarks (I'm working on a new i5 laptop now), results at:
>      https://github.com/tomcucinotta/cpudl-bench/blob/master/cpudl-100000.pdf
>    highlighting up to a 14% speed-up when averaging over 100K ops. See the
>    enclosed README in that repo for more info.

Thanks!

Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

SCHED_DEADLINE cpudeadline.{h,c} fixup Tommaso Cucinotta <tommaso.cucinotta@sssup.it> - 2016-08-14 16:30 +0200
  [RFC PATCH 2/3] sched/deadline: make cpu heap faster avoiding real swaps on heapify Tommaso Cucinotta <tommaso.cucinotta@sssup.it> - 2016-08-14 16:30 +0200
  [RFC PATCH 3/3] sched/deadline: split cpudl_set() into cpudl_set() and cpudl_clear() Tommaso Cucinotta <tommaso.cucinotta@sssup.it> - 2016-08-14 16:30 +0200
  Re: SCHED_DEADLINE cpudeadline.{h,c} fixup Peter Zijlstra <peterz@infradead.org> - 2016-08-19 15:00 +0200

csiph-web