Silk.NET•3y ago

Applications technically not using a billion CPU is reported as 100% and so on

KingOP•8/6/23, 7:39 PM

Maybe pausepause is simply not taken into account

Aqua•8/6/23, 7:40 PM

meanwhile htop reporting cpu usage as 130% when

Aqua•8/6/23, 7:41 PM

KingOP•8/6/23, 7:41 PM

Oh yeah I remember that from back when I poked around in linux

KingOP•8/6/23, 7:41 PM

always so confusing seeing "cpu usage: 400%" and stuff

TechPizza•8/6/23, 7:41 PM

you all don't measure watt consumption at the wall? when

Perksey•8/6/23, 7:42 PM

you mean you don’t have a ChipWhisperer?

KKing Applications technically not using a billion CPU is reported as 100% and so on

KingOP•8/6/23, 7:42 PM

Also sadly this isn't the case... I just checked CPU temps/wattage while running and it is indeed loading the CPU to the point where it heats up and starts chewing more watts

KingOP•8/6/23, 7:42 PM

Boo

TechPizza•8/6/23, 7:59 PM

just do cpuid in a loop, surely that's going to keep things cool when

Perksey•8/6/23, 9:42 PM

@clawthorn try copying and pasting this into your program: https://github.com/dotnet/Silk.NET/blob/hotfix/fidgity-spinny/src/Core/Silk.NET.Core/Miscellaneous/BreakneckSleep.cs
and then doing:

const double loopsPerSecond = 10000;

var timer = new BreakneckSleep(TimeSpan.FromSeconds(1 / loopsPerSecond));
window.Initialize();
while (!window.IsClosing)
{
    window.DoEvents();
    if (!window.IsClosing)
    {
        window.DoUpdate();
    }
    if (!window.IsClosing)
    {
        window.DoRender();
    }
    timer.Sleep();
}
window.DoEvents();
window.Reset();

const double loopsPerSecond = 10000;

var timer = new BreakneckSleep(TimeSpan.FromSeconds(1 / loopsPerSecond));
window.Initialize();
while (!window.IsClosing)
{
    window.DoEvents();
    if (!window.IsClosing)
    {
        window.DoUpdate();
    }
    if (!window.IsClosing)
    {
        window.DoRender();
    }
    timer.Sleep();
}
window.DoEvents();
window.Reset();

Perksey•8/6/23, 9:42 PM

we're not 100% confident in the accuracy yet (see #team-talk) but something similar to this will end up shipping eventually

KingOP•8/6/23, 9:43 PM

Hmm... lets see

KingOP•8/6/23, 9:48 PM

Oh! That does seem to work

KingOP•8/6/23, 9:49 PM

Though it does make the GPU usage behave oddly

Maxine•8/6/23, 9:49 PM

that's what HAPPENS when you're not RENDERING FRAMES ALL THE TIME

khitiara•8/6/23, 9:49 PM

gpu usage in task manager is absurdly unreliable

khitiara•8/6/23, 9:50 PM

but yeah you are just kinda leaving the gpu alone between frames now which will confuse the usage meter

KingOP•8/6/23, 9:50 PM

Starts off at like... 1% gpu usage, and then slowly climbs to around 17%

KingOP•8/6/23, 9:50 PM

over like... 10 seconds

chairclr•8/6/23, 9:51 PM

shouldn't the swapchain do the sleeping for you..? unless you're not targeting vsync*

Maxine•8/6/23, 9:51 PM

correct

Maxine•8/6/23, 9:51 PM

they're not targeting vsync

chairclr•8/6/23, 9:51 PM

ah i see

KingOP•8/6/23, 9:51 PM

And yeah accuracy is a bit off too, I specify 500 loops per second, and it gives me around 330fps/ups

Maxine•8/6/23, 9:52 PM

so it's around 3ms?

Perksey•8/6/23, 9:52 PM

in my experience running in release mode helps

Maxine•8/6/23, 9:52 PM

wait is that how numbers work

KingOP•8/6/23, 9:52 PM

Maxine•8/6/23, 9:52 PM

oh yeah debug jit will introduce unnecessary guards

chairclr•8/6/23, 9:52 PM

windows actually has an api for this, called a WaitableTimer

chairclr•8/6/23, 9:52 PM

for precision sleeping

KingOP•8/6/23, 9:52 PM

Oh right... yeah, lets try release

Cchairclr windows actually has an api for this, called a WaitableTimer

Lyris the Kitori•8/6/23, 9:52 PM

we are fully aware

LLyris the Kitori we are fully aware

chairclr•8/6/23, 9:53 PM

good

Lyris the Kitori•8/6/23, 9:53 PM

infact thats like half the discussion

Perksey•8/6/23, 9:53 PM

also if you change this
https://github.com/dotnet/Silk.NET/blob/hotfix/fidgity-spinny/src/Core/Silk.NET.Core/Miscellaneous/BreakneckSleep.cs#L168
to always be the FromMicroseconds branch and this https://github.com/dotnet/Silk.NET/blob/hotfix/fidgity-spinny/src/Core/Silk.NET.Core/Miscellaneous/BreakneckSleep.cs#L104
to always run it will be improved

Cchairclr windows actually has an api for this, called a WaitableTimer

Perksey•8/6/23, 9:53 PM

if you looked at the file you will see it's using that

KingOP•8/6/23, 9:53 PM

Nope, release mode didn't change anything

Maxine•8/6/23, 9:54 PM

that's fair

Maxine•8/6/23, 9:54 PM

disable tiered compilation

KingOP•8/6/23, 9:54 PM

500 lps results in between... I guess 330 and 400fps/ups

PPerksey if you looked at the file you will see it's using that

chairclr•8/6/23, 9:54 PM

i tried

KKing Nope, release mode didn't change anything

Perksey•8/6/23, 9:54 PM

try this help-and-questions

chairclr•8/6/23, 9:54 PM

just loads forever, thanks gh

MMaxine disable tiered compilation

Perksey•8/6/23, 9:54 PM

and good point none of these are aggropt

MMaxine disable tiered compilation

KingOP•8/6/23, 9:56 PM

That doesn't seem to have done anything. It's <TieredCompilation>false</TieredCompilation><TieredCompilation>false</TieredCompilation> into the project file, right?

Maxine•8/6/23, 9:57 PM

if i recall, yes

KingOP•8/6/23, 9:57 PM

Lemmie try rebuild

Maxine•8/6/23, 9:57 PM

and then do what the smart man said

const double loopsPerSecond = 10000; var timer = new BreakneckSleep(TimeSpan.FromSeconds(1 / loopsPerSecond)); window.Initialize(); while (!window.IsClosing) { window.DoEvents(); if (!window.IsClosing) { window.DoUpdate(); } if (!window.IsClosing) { window.DoRender(); } timer.Sleep(); } window.DoEvents(); window.Reset();

Applications technically not using a billion CPU is reported as 100% and so on

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