Advanced Search

I no longer have the HPC option in my bios settings.  I'm guessing it went away when I switched to the X6 1090T processor (instead of the fx 8350).  The 1090T didn't have hyperthreading, so I'm not using it.  With the real time kernel, for some reason /sys/devices/system/cpu/smt/active isn't there, but I'm sure I don't have hyperthreading now.

I tried the core performance boost.  It seemed to work for a bit, but restarting without changing settings made it go away.  I seem to have some random really good performance every once in a while, but it isn't repeatable.  Even restarting just the latency-histogram makes it go away sometimes.

Here's one of the times it looked pretty good for awhile.
 

I also tried adding the following commands to try to help things, but it is hard to tell if they really did anything.

swap off --all
systemctl --user stop pulseaudio.socket
systemctl --user stop pulseaudio.service

I also moved the rcu_sched to processor affinity 1,2,3,4,5.  That helped until I started firefox, and I could never get it back.


I think I'm gonna just try to move foreward without getting that last bit of jitter out.  I'm consistently below 40us, which sounds like it is good enough.  (I'll come back to it if I get some motors moving.) 

Oh, and for completeness, I tried the blocking of sound modules described here:
forum.linuxcnc.org/18-computer/39371-res...th-linuxcnc?start=90

Thanks royka,
Do you happen to know the names of the base and servo processes? I see migration/0 through migration/5 and rtkit-daemon listed as RT in htop. They don't seem to increase in time though, so I'd guess they aren't being used. There are some -20 priority processes too.

I tried removing each ram module, and it seemed to work for a bit, but I'd restart the latency-histogram (without restarting anything else), and it would stop helping, so I guess really some other random thing was happening that I can't find.

I am using a cheap SSD. I tried playing around with bios settings for it, and it seems to make no difference. I don't have any CD/DVD or SD-readers.

www.rocketronics.de/shop/en/micropod1.ht...tPslSBwzVmltalID63TW