01:45 <bertje__> hi guys

01:46 <bertje__> does anyone know what happened to the way threads are scheduled, between 4.8.1 mainline and 4.10 mainline? I have an application that does realtime audio and was running fine on 4.8.1 but on 4.10 i had audio dropouts ... changing the IO scheduler to noop improved things but still not 100% fixed so wondering what's going on

02:01 <stdint> bertje__, I heard this problem before

02:01 <stdint> but it is about someone want a realtime linux on rockchip

02:01 <stdint> are you using jack?

02:02 <bertje__> @stdint i'm using alsa

02:03 <bertje__> @stdint with the default alsa audio output on 4.8.1 i had no problem, with 4.10 a lot of audio dropouts in my application

02:03 <bertje__> @stdint so I switched to the direct hardware output which improved things, and then I did the IO scheduler change to noop

02:03 <bertje__> @stdint but still, I have some audio dropouts so it's still not fixed... wondering what else to configure in the kernel and why this is now a problem with 4.10

02:04 <stdint> bertje__, I will check the mail

02:05 <bertje__> @stdint great, thanks for helping

02:05 <stdint> I only know the 4.10 introduce the deadline scheduler, but I am not familiar with scheduler within kernel

02:06 <bertje__> @stdint should i try deadline instead of noop? some people only wrote that noop is the best for audio but no idea really

02:11 <stdint> I didn't have a try on it

02:24 <bertje__> @stdint just tried with deadline, similar performance to noop

02:24 <bertje__> @stdint i still think something is going on with the way threads are scheduled or maybe there was a change to the alsa system i'm not aware of that can play a role...

02:30 <bertje__> @stdint my application was built in a debian jessie chroot ... could it be i have to update to 4.10 there as well, or shouldn't this matter?

09:51 <cnxsoft> This link http://weixin.qq.com/r/4UiDmwzEEFFvrUj49x3z is supposed to redirect to some info about Rockchip. I got it from a QR code on the web.

09:51 <cnxsoft> But it only goes to wechat.com website homepage.

09:52 <cnxsoft> Do I need to register an account to access it?

10:02 <cnxsoft> Trying on mobile phone... need to install WeChat. Done. The app crashes when I launch it, reboot phone, start the app, registration required

10:03 <cnxsoft> App stuck in infinite loop during registration :(

10:08 <cnxsoft> Installation success. Share links in wechat, click on it in wechat, starts Google Play asking me to install WeChat...

10:08 <cnxsoft> Why oh why?

15:55 <cinifr_> hi all, I have test GPU in RK3399 with firefly board. I get a poor result: glmark get 15 fps,and glmark-es2 get 50 fps. but if i use glmark-es2 --off-screen, the result is 233 fps, and this time, GPU's freq is running at 800Mhz. I guess that poor result is becaus of rockchip-drm. how about it? thanks.

15:56 <phh> well glmark isn't supposed to work, mali can only do opengles, not opengl

15:56 <phh> (let's dream of a mesa mali driver with opengl \o/)

15:57 <phh> (there are some libraries which does api translation from opengl to opengles if you're interested)

15:57 <phh> as for on-screen vs off-screen, I remember mali API doesn't respect vsync off