Well i was talking about this on other site generally for all processors, so i took into account this number, given that intel cpus have lowest polling interval - 50us (so i heard). Let me ask you a question, i though usb controller was located on a motherboard, but than i heard someone talking about cpu. As you can find specifications for that in Intel datasheets per chipset - ucode said. This would imply it is in motherboard. Just to clear this up, so i refer to this correctly!Feel free to elaborate on your calcs.
Yep i couldn't find these anywhere too, ucode listed this for x99 chipset, or how it calls. But i found this in specification of XHCI controller from 2019 in my previous post listed.I couldn't find anything about "Interrupt Threshold Control" in the data sheets for Z3xx PCH. Ctrl-f "micro-frame" yielded no similar-kind option either
https://www.intel.com/content/www/us/en/products/docs/chipsets/300-series-chipset-pch-datasheet-vol-1.html?wapkw=Chipset Platform Controller Hub (PCH) Datasheet
https://www.intel.com/content/www/us/en/products/docs/chipsets/300-series-chipset-pch-datasheet-vol-2.html?wapkw=Chipset Platform Controller Hub (PCH) Datasheet
maybe you would find this interesting, doesn't seem useful for my polling rate though, unless I wanted to cheat or something.Has anyone tried using a logic analyzer to measure a mouse's polling precision? Seem to me like if the difference between mice comes from the actual mice themselves then a logic analyzer would be a superior tool to a PC running an OS. They can be found fairly cheap too compared to other external HW benchmark solutions.
A random one from Aliexpress for $7
10.51US $ |Debug Microcontroller Mini FPGA 24M 8CH Professional Portable Measuring Data Upload USB Powered Tool Logic Analyzer Arm Black|Oscilloscopes| - AliExpressSmarter Shopping, Better Living! Aliexpress.comwww.aliexpress.com
Edit: Buy a USB extension cable as well. Cut the extension cable open and hook it up to the logic analyzer. Now testing different mice should be as easy as plug and play. Unless the mice have to be connected to an OS, in which case you can still branch out from the extension cable and record the signals being sent back and forth between the mice and PC.