Ubuntu
linux package

  1. Bug #579117
  2. Comment #21

Comment 21 for bug 579117

Revision history for this message
Chris Hermansen (c-hermansen) wrote :

David, I was doing some further digging on the "scheduler: waiting for cpu" thing. There is this thread that is interesting:

https://patchwork.kernel.org/patch/52509/

where it seems others are seeing high-ish latencies in relation to this. I tried rebooting with the nohz=off but I saw no appreciable difference in the latencies. I'm completely reluctant to try to follow the kernel patching thing "on the off chance".

There also seem to be comments about big latencies with kondemand in relation to power management.

And I wonder if power management / ACPI might get into the problem here as most things ACPI-related don't seem to work very well on this Toshiba (eg suspend to RAM, and as I mentioned above my switch no longer seems to turn off the wireless network).

Does this just seem like a bunch of red herring?

Thanks for all your patience and thought on this problem.

I'm checking on the idea of a bios upgrade.