Z690 usb/timer issue

[kokkatc]

1ms vs 0.5ms
deletevalue tick/clock

It was my understanding DPC latency checker does not work on any OS newer than Windows 7. You would have to use latency monitor. Are you on windows 7 or other?

win10. latency monitor is latencymon?

Yep, I'm referencing latencymon from resplendence. You stoked my curiosity by using DPC latency checker because most people are running windows 10 these days and it's my understanding dpc latency checker does not work on windows 10/11. Perhaps I'm mistaken on this which is why I asked.

[xdropz]

i dnt need to reinstall the whole os? I just need to use grub and change the setting in bios ?

yes, just use grub.

how can i change hidden bios settings with grub?
i dont find any information on google. i want disable hpet in bios

https://www.youtube.com/watch?v=pMKPwNpDcpM&t=2s use this guide

[Unreazz]

You probaly need to turn off LUA in Windows or disabling secure boot in bios. Im not 100%sure, give it a try

[Slender]

1ms vs 0.5ms
deletevalue tick/clock

It was my understanding DPC latency checker does not work on any OS newer than Windows 7. You would have to use latency monitor. Are you on windows 7 or other?

win10. latency monitor is latencymon?

Yep, I'm referencing latencymon from resplendence. You stoked my curiosity by using DPC latency checker because most people are running windows 10 these days and it's my understanding dpc latency checker does not work on windows 10/11. Perhaps I'm mistaken on this which is why I asked.

im really dont know, maybe this program not work normally with windows 10, or new windows timer after 1809. But u can see difference between timer resolution

[netarangi]

Do we make the low latency io change with Grub?

[F1zus]

It was my understanding DPC latency checker does not work on any OS newer than Windows 7. You would have to use latency monitor. Are you on windows 7 or other?

win10. latency monitor is latencymon?

Yep, I'm referencing latencymon from resplendence. You stoked my curiosity by using DPC latency checker because most people are running windows 10 these days and it's my understanding dpc latency checker does not work on windows 10/11. Perhaps I'm mistaken on this which is why I asked.

im really dont know, maybe this program not work normally with windows 10, or new windows timer after 1809. But u can see difference between timer resolution

Hello. Have you solved your problem with unstable mouse polling rate?
I'm going to get myself an external pci-e usb card on the msc9990 chip. I think this is the best chip among all usb 2.0 controllers.
Compared to usb 3.0/3.1/3.2 it has lower input lag which is what I want.
Another question - where is the mouse delay less, in the built-in ports of the z690 motherboard or in an external pci-e usb card?

[Slender]

win10. latency monitor is latencymon?

Yep, I'm referencing latencymon from resplendence. You stoked my curiosity by using DPC latency checker because most people are running windows 10 these days and it's my understanding dpc latency checker does not work on windows 10/11. Perhaps I'm mistaken on this which is why I asked.

im really dont know, maybe this program not work normally with windows 10, or new windows timer after 1809. But u can see difference between timer resolution

Hello. Have you solved your problem with unstable mouse polling rate?
I'm going to get myself an external pci-e usb card on the msc9990 chip. I think this is the best chip among all usb 2.0 controllers.
Compared to usb 3.0/3.1/3.2 it has lower input lag which is what I want.
Another question - where is the mouse delay less, in the built-in ports of the z690 motherboard or in an external pci-e usb card?

on z390/z490 mcs9990 works good, but on z690 and z790 work very bad
4-5 ISR on z390 vs 10-15 ISR on z690/z790.
new gen intel is very bad.
better to find nec v2 m2 usb card and connect it to cpu m2 slot.
but my best way - use internal GL usb 2.0 controller for mice, z790 usb for another.

[kyube]

Yep, I'm referencing latencymon from resplendence. You stoked my curiosity by using DPC latency checker because most people are running windows 10 these days and it's my understanding dpc latency checker does not work on windows 10/11. Perhaps I'm mistaken on this which is why I asked.

im really dont know, maybe this program not work normally with windows 10, or new windows timer after 1809. But u can see difference between timer resolution

Hello. Have you solved your problem with unstable mouse polling rate?
I'm going to get myself an external pci-e usb card on the msc9990 chip. I think this is the best chip among all usb 2.0 controllers.
Compared to usb 3.0/3.1/3.2 it has lower input lag which is what I want.
Another question - where is the mouse delay less, in the built-in ports of the z690 motherboard or in an external pci-e usb card?

on z390/z490 mcs9990 works good, but on z690 and z790 work very bad
4-5 ISR on z390 vs 10-15 ISR on z690/z790.
new gen intel is very bad.
better to find nec v2 m2 usb card and connect it to cpu m2 slot.
but my best way - use internal GL usb 2.0 controller for mice, z790 usb for another.

The tools you are using are completely irrelevant for testing any kind of timers or polling rate precision on anything past Windows 7
Use xperf (detailed analysis) or latencymon (faster check, usually reserved for nasty drivers lingering around) for proper DPC latency analysis on a Server 2022 or Windows 11 install, which have working timer resolution.
They've broken timers past 2004, as per: https://github.com/amitxv/PC-Tuning/blo ... ule-change

Drivers are extremely important for DPC latency when it comes to USB devices, newer motherboards only have microsoft drivers which can cause ISR issues.

As an example, the uPD720202 PCI-E card I got doesn't cause any kind of ISR stutter regardless of what device is on it (tested USB mic, mouse, keyboard, didn't test USB DAC), but has interrupt moderation which doesn't allow for proper 1kHz use, let alone higher polling rates. This is not a specific PCI-E card issue, it's a driver issue as multiple users have reported similar graphs that I've got on mousetester.
500hz is extremely stable on it though.
All of this is on Renesas specific drivers. Microsoft stock drivers cause ISR stutters like mad.

[Slender]

im really dont know, maybe this program not work normally with windows 10, or new windows timer after 1809. But u can see difference between timer resolution

Hello. Have you solved your problem with unstable mouse polling rate?
I'm going to get myself an external pci-e usb card on the msc9990 chip. I think this is the best chip among all usb 2.0 controllers.
Compared to usb 3.0/3.1/3.2 it has lower input lag which is what I want.
Another question - where is the mouse delay less, in the built-in ports of the z690 motherboard or in an external pci-e usb card?

on z390/z490 mcs9990 works good, but on z690 and z790 work very bad
4-5 ISR on z390 vs 10-15 ISR on z690/z790.
new gen intel is very bad.
better to find nec v2 m2 usb card and connect it to cpu m2 slot.
but my best way - use internal GL usb 2.0 controller for mice, z790 usb for another.

The tools you are using are completely irrelevant for testing any kind of timers or polling rate precision on anything past Windows 7
Use xperf (detailed analysis) or latencymon (faster check, usually reserved for nasty drivers lingering around) for proper DPC latency analysis on a Server 2022 or Windows 11 install, which have working timer resolution.
They've broken timers past 2004, as per: https://github.com/amitxv/PC-Tuning/blo ... ule-change

Drivers are extremely important for DPC latency when it comes to USB devices, newer motherboards only have microsoft drivers which can cause ISR issues.

As an example, the uPD720202 PCI-E card I got doesn't cause any kind of ISR stutter regardless of what device is on it (tested USB mic, mouse, keyboard, didn't test USB DAC), but has interrupt moderation which doesn't allow for proper 1kHz use, let alone higher polling rates. This is not a specific PCI-E card issue, it's a driver issue as multiple users have reported similar graphs that I've got on mousetester.
500hz is extremely stable on it though.
All of this is on Renesas specific drivers. Microsoft stock drivers cause ISR stutters like mad.

DPC latency checker shows Kernel Timer latency, it work on all windows ver.
and uses ExSetTimerResolution function for timer call.

[F1zus]

Yep, I'm referencing latencymon from resplendence. You stoked my curiosity by using DPC latency checker because most people are running windows 10 these days and it's my understanding dpc latency checker does not work on windows 10/11. Perhaps I'm mistaken on this which is why I asked.

im really dont know, maybe this program not work normally with windows 10, or new windows timer after 1809. But u can see difference between timer resolution

Hello. Have you solved your problem with unstable mouse polling rate?
I'm going to get myself an external pci-e usb card on the msc9990 chip. I think this is the best chip among all usb 2.0 controllers.
Compared to usb 3.0/3.1/3.2 it has lower input lag which is what I want.
Another question - where is the mouse delay less, in the built-in ports of the z690 motherboard or in an external pci-e usb card?

on z390/z490 mcs9990 works good, but on z690 and z790 work very bad
4-5 ISR on z390 vs 10-15 ISR on z690/z790.
new gen intel is very bad.
better to find nec v2 m2 usb card and connect it to cpu m2 slot.
but my best way - use internal GL usb 2.0 controller for mice, z790 usb for another.

Thanks for the explanation. Now I'm thinking which pci-e card to buy. There are two versions. One with a long board and the other with a short board and short contact lines. I think which one will be better in terms of delays. One costs $14, the other $22, but both have a msc9900 chip, the same capacitors.