06:09 <mszyprow> memeka: please check with disabled exynos5422-dmc driver

06:10 <mszyprow> memeka: 933MHz is fake

06:10 <mszyprow> memeka: the memory chips supports only 800MHz

06:10 <memeka> mszyprow: I added the patches for DMC, ASV

06:10 <memeka> latest ones

06:10 <mszyprow> memeka: uboots configures bus at 933MHz, but leaves memory chips in self-refresesh mode

06:10 <memeka> set all governors to performance

06:11 <mszyprow> memeka: which is still slower than the real (synchronous) 800MHz

06:11 <mszyprow> memeka: I would start disabling devfreq at all

06:11 <mszyprow> memeka: there are too many issues with it

06:12 <memeka> on wayland, I still get limited to 20fps refresh, and offline glmark2 can go up to 50fps (i remember much higher values ~80fps with individual tests in the hundreds on 5.0 kernel

06:12 <memeka> mszyprow: mali is set to run on devfreq :D

06:13 <mszyprow> then disable exynos-bus and exynos5422-dmc drivers

06:13 <memeka> mszyprow: the issue was present before adding all the DMC/ASV patches anyway

06:13 <memeka> and it's weird to have a nice cutoff on-screen for 20fps

06:13 <memeka> is it possible there is an issue with the DRM?

06:13 <mszyprow> this way you will be sure that hw runs at be performance

06:14 <memeka> i didn't see any big exynos drm change (maybe DRMPRIME getting out)

06:14 <mszyprow> frankly I have no idea, afair nothing has changed in drm since v5.0...

06:15 <mszyprow> memeka: if you have a good test environment, you can bisect that issue ;P

06:17 <memeka> mszyprow: I don’t have a good test env :)

06:17 <memeka> also, i am not really sure where the issue is or how to debug it :P

06:18 <memeka> clocks? drm? gpu? bus? .... ?!

06:18 <memeka> heck even CPU has an influence - running egl on big or little cores behave VERY differently

06:19 <memeka> in terms of speed

06:19 <memeka> mszyprow: can even be some other software (e.g. i am running ubuntu 17.10, maybe too old e.g. libdrm or other lib....)

06:20 <memeka> (although it is running faster with older kernel, so maybe not that)

06:20 <memeka> mszyprow: but i do like this: https://pastebin.com/jKPrut7U

06:20 <mszyprow> memeka: if it is related to scheduling, then try 'taskset' based test

06:21 <mszyprow> memeka: please disable devfreq

06:21 <memeka> mszyprow: i did try taskset of course, still slow :P

06:21 <memeka> ok i will try with that next

06:21 <mszyprow> memeka: there have been a few changes to exynos-bus

06:21 <memeka> hmm maybe that?

06:22 <mszyprow> memeka: we are trying to make it more reliable, but there is a lot of things to be fixed first

06:26 <memeka> mszyprow: I will try porting some more of what I had from 5.0 first, then try check performance with devfreq disabled

06:27 <memeka> but again, being limited to 20fps seems fishy (and related to DRM...)

06:30 <mszyprow> memeka: that really sounds strange, I don't suspect any exynos related patch for that, maybe something in the drm core?

06:31 <memeka> mszyprow: yes when i said DRM i didn't mean exynos drm, i meant drm core :(

06:32 <memeka> maybe next RCs will fix that .....