Hardware latency tests, used PC's

Thanks Tommy... I'll give it a try.

I checked the settings you listed above. I was able to find everything you listed except hyper-threading. Under Advanced; CPU configuration, I only have the following:
Active Processor Cores (All)
Intel Virtualization Technology (Disabled)
Vt-d (Enabled)
Intel Text Support (Disabled)
SW Guard Extensions (Enabled)
Enhanced Speedstep (Enabled)
Turbo Mode (Disabled)
Package C State Limit (Auto)

The active core options I have is All, 1, 2 or 3. Would it help to reduce the number of cores?

garja wrote:

Vt-d (Enabled) ==== disable



Package C State Limit (Auto) ===== can this be disabled or turned off?

The active core options I have is All, 1, 2 or 3. Would it help to reduce the number of cores?

Reducing the number of cores might help but would make the PC sluggish to some degree.
You can certainly give it a try and see how it influences latency.

also disable Enhanced Speedstep

Somehow with my mini pc with a N100 cpu I had a better result with turbo enabled, so that is something you could try. Sometimes a newer kernel version can help. This one works well with that mini pc:
drive.google.com/drive/folders/1L28lG0zD...2XQJx?usp=drive_link

royka wrote:

Somehow with my mini pc with a N100 cpu I had a better result with turbo enabled, so that is something you could try. Sometimes a newer kernel version can help. This one works well with that mini pc:
drive.google.com/drive/folders/1L28lG0zD...2XQJx?usp=drive_link
 

Please tell the exact maker/model of the pc.

At that moment the cheapest Chinese model: Firebat T8 plus LPDDR 5 16gb

HP Z600 WorkStation
forum.linuxcnc.org/18-computer/57073-hp-...or-use-with-linuxcnc