Error finishing read... *sigh*

Will post a latency histogram on Thursday after a business trip.

Which hardware/ pc are you using?

cheap Pentium J2900. i just posted my test results with settings few days ago in a thread called Pentium J2900 fanless pc test results, you can compare it with yours.

SebastianM wrote:

No idea if I did anything wrong, but after I applied that line from above and rebooted, Debian won’t launch the desktop environment anymore. I can manually start xfce. Never mind 

Did you get xfce to start automatically at boot again?  If so what did you need to do?
below is what my Grub file looks like, if there is something in here i can change, please let me know:
GRUB_CMDLINE_LINUX_DEFAULT="quiet isolcpus= 3 pcie.aspm=0 r8125.eee_enable=0  modprobe.blacklist=r8169 pcie_aspm=off idle=poll"
GRUB_CMDLINE_LINUX=""

These changes worked great by the way.  I can't thank everyone enough. I went from 10ms max ping down to 0.105ms

Yes, I did.
After I applied the lines that DMNZ suggested, xfce started again automatically

Thanks that worked for me as well, other than changing the driver to r8125