Touch Screen Recommendations

I'm afraid it is turned off already and I do not use WiFi.
I remember when I installed Debian the first time it made a big difference to turn power saving off. Had latency around 80 000, but this is a factor 100 times higher.
I though I found something yesterday and recompiled the kernal again, but it got even worse.

I have found that one shall activate CONFIG_PREEMPT_RT in xconfig, but I can not find that parameter. My previous attempt was to activate PREEMPT_RT_FULL, and now I have tried PREEMPT_RT_LL, that I hoped should do the trick, but it did not.

Shall I try an other version of the Kernal? I'm so far off with the latency now so small changes does not help. Now I'm off with a factor of 1000! With Debian I have around 20 000 and now it is 20 000 000
The worst thing about this is that it takes so long time to try things.

Latency now:

Forgot to say that latency now is with one processor. With four the cpu's latency is about the same as my previous attempt around 8 200 000

You must set the "Fully Preemptable Kernel" option

This may not solve your latency issues buts its necessary to build a real time kernel

In my experience, isolcpus typically makes things worse with Preempt-RT

Yes, I have spent a couple of hours on google now and I understand that it is the "Fully Preemptable Kernel" that shall be used.
I think I will start from scrach with a new Mint 17.3 installation again and take one of the newer RT kernals.
I just found out that a friend of mine has used 4.6.7 and it works fine for him on a Supermicro board with J1900 cpu.

Now, finally getting close to something that can work.
Installed LMDE (Linux Mint Debian Edition) from scratch today after work and compiled the latest RT Kernal 4.8.9
With default settings in xconfig, just set "Fully Preemptable Kernel" I now have 96 000/118 000 in latency.
I hope it shall be possible to tweek the kernal and lower the latency a bit.
Touchscreen works

perra_e wrote: Now, finally getting close to something that can work.
Installed LMDE (Linux Mint Debian Edition) from scratch today after work and compiled the latest RT Kernal 4.8.9
With default settings in xconfig, just set "Fully Preemptable Kernel" I now have 96 000/118 000 in latency.
I hope it shall be possible to tweek the kernal and lower the latency a bit.
Touchscreen works

If you are using a Mesa ethernet card, that level of latency is fine according to PCW.
Make sure the C1/C7 wait times are disabled in the BIOS and you''ll be good to go.