Another look at HPET High Precision Event Timer

Face-palm...

Read again what i wrote and you are wrong.

What i meant in my post is (look screenshot) qpc value 3.58 mhz instead of 10 mhz on win10 1909.

And "useplatformclock no" is not disabling hpet, this command depends on hpet in bios...

Hpet ON in bios with useplatformclock yes will force to use hpet only, useplatformclock no will force to use tsc only
Hpet off in bios with useplatformclock yes will give you way different timer, useplaformclock no will force to use tsc only.

I'm not even gonna mention about disabledynamictick that's not even related to hpet.

 

You seem to be a bit confused. Watch this video:

You need to keep HPET active in BIOS all of the time, then disable it on Windows. This gives the best O.S timers with less latency, if HPET is not enabled in BIOS, everything will sync worse. He explains it on that video.

 

He does not explain anything. He just shows some tools' windows with numbers and dots.

 

How did you manage to get the proper time without the Meltdown and Spectre protections which is usually 10 mhz?

Yea mate, I have AMD I just wanted to say both so incase someone didn't know SMT. and sometimes SMT/HT can cause an issue in games or even in windows. but not talking about that. everything works fine but I just want to understand why it happened. it must happen because I change settings with the cpu affinity priority and then disabled SMT. it must change something and I just want to know how to reset it. because for some weird reason even on Windows to Go it is exactly the same, so it must be something in bios for some weird reason, could be IMMOU or something else I disabled.

For the moment last tests I've discovered for mouse movement is don't change the Nvidia control panel settings. keep it on Quality and not High Quality. and set your Color settings to Use Nvidia color settings. and set prefer maximum performance.

I will test PCI-E Speed when it's idle 1.1 in windows, compare to forced 3.0 all the time. those power-saving screw everything! we had perfect mouse movement because we didn't have all these power savings.

 

Hpet off in bios with useplatformclock yes will give you way different timer.

It's called Local APIC timer. Better responsive, lower performance.

 

"Hpet off in bios with useplatformclock yes will give you way different timer, useplaformclock no will force to use tsc only."

lol, wrong.

 

Which part is wrong?

What is the point in replying so short and dry? Tell us your wisdom.

 

his claim that "no" does something.

all documentation shows it is the same thing as not having the bcdedit entry present at all.

 

It does. When "no" entry is not present OS decides. When "no" entry is present Windows can`t decide to use any platform timers.
On old rigs with CPU with faulty implementation of TSC OS will chose platform timer. If you specified to not use platform timers OS will use faulty TSC.
Of course on modern rigs two cases - without and with "no" entry - will give the same result.

 

Can someone test COD Modern Warfare 2019 alt-tabbing causing weird latency DPC issues? just test it, I know it doesn't say anything, I want to know if Alt-Tab while full screen causes this issue to everyone.

cause it doesn't happen with other games.

(FIXED) it's on the Thread of Nvidia what happened to DPC

Some nice information https://www.osr.com/nt-insider/2014-issue3/windows-real-time/

https://i.imgur.com/IzRpptz.png

 

Im stuck at 3.41 mhz and want to use TSC + hpet , i have HPET enabled in bios and tried theuseplatformclock no. Why am i still at 3.41?

 

You broke synthetic timer Widows was using before your manipulations.

 

so i need to reinstall?

 

just default your bcdedit config

 

Execute in elevated command prompt

bcdedit /enum

and see whether you forgot about some settings like "tscsyncpolicy".

 

I use Windows 7, btw. But how do i defualt by bdedit config?

I dont think i can use any command for tscsyncpolicy. They dont work

 

Are you kidding us? Only in Win10 QueryPerformanceFrequency returns 10MHz when not forced to use platform timers. In all older versions it always returns 3,(smth) MHz.

 

No im not. Im not that good on what does what. I just wanna try it for performance boost in csgo. So i cant any other than 3.4 and 14 in Windows 7?

 

But i read somewhere that TSC + Hpet was 3.9

 

If you will disable HPET in BIOS and then will force platform timer then you will get 2,(smth) MHz, IIRC, - LAPIC timer.

But believe me 3,4MHz (for TSC) is better option.