Ubuntu
linux package

  1. Bug #1690085
  2. Comment #167

Comment 167 for bug 1690085

Revision history for this message
In , tom (tom-linux-kernel-bugs) wrote :

We have a machine (with Ryzen Threadripper 1950X) where this is happening even with rcu_nocbs=0-31 and I'd love to test the disabling C6 hypothesis except that as far as I can tell there's not such option in the BIOS (ASUS PRIME X399-A motherboard).

In fact it looks to me like there is only C1 and C2 and hence no C6 to disable - that's going both by powertop and looking at /sys/devices/system/cpu/cpu0/cpuidle/state*/name to see what states exist.