On 11-Jan 16:44, Pavan Kondeti wrote:
Hi Viresh,
On Tue, Jan 9, 2018 at 12:12 PM, Viresh Kumar viresh.kumar@linaro.org wrote:
On 05-01-18, 16:13, Viresh Kumar wrote:
Hello,
I did some comparisons of Pelt and Walt and have some very interesting performance results that I wanted to share with all of you. I haven't got any power numbers as I don't have setup for that.
I ran the janbench tests from sched-evaluation-full.yaml agenda (attached).
Results updated in: https://goo.gl/eCx4Pk
Average across 30 iterations:
+-----------------+---------+--------+----------------------+ | Test | Pelt(8)| Walt | Pelt Improvement % | +-----------------+---------+--------+----------------------+ | list_view | 8 | 17 | 52.94 | | | | | | | image_list_view | 11 | 24 | 54.17 | | | | | | | shadow_grid | 18 | 27 | 33.33 | | | | | | | low_hitrate_text| 39 | 45 | 13.33 | | | | | | | edit_text | 5 | 7 | 28.57 | | | | | | +-----------------+---------+--------+----------------------+--
What is the WALT window size (walt_ravg_window) in your setup? I see it is 20 msec here [1], but just want to double confirm. Reducing WALT
Good point, 10ms is actually the default value on Pixel2 devices too.
window size makes it more responsive. Have you tried with different window size like 10 msec?
[1] https://git.linaro.org/people/vireshk/mylinux.git/tree/kernel/sched/walt.c?h...
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Patrick Bellasi