[CentOS] Odd issue: power_saving

Mon Jun 16 15:49:14 UTC 2014
m.roth at 5-cent.us <m.roth at 5-cent.us>

On a running system, I was just logging in, and it took for-bloody-ever. I
run top, and ok, a load of 5 still shouldn't do that; we have folks that
do put real loads on these systems. But top shows me power_saving
frequently coming to the top, with a 94% - 100% CPU usage, and there's two
threads of power_saving. Add to this that I don't *ever* remember seeing
such a kernel thread.

So, can I kill either or both threads? Googling some, I see someone
acpi_pad.disable=1 already added in grub.conf ;-) (after having `modprobe
-r acpi_pad`, which solves directly the load issue)

Good idea or not?