so many applications wake up so often
Using strace, I discovered many programs are constantly busy these
days. No wonder one can't seem to save power. There ought to be a law...
Subject: Re: silent PC vs. emacs
From: Dan Nicolaescu <email@example.com>
...The OLPC/Fedora people are working on eliminating application
wakeups in order to save power. I cite here from one of the bug
reports about this:
"We're working with RH engineers on a tickless idle kernel, which
has the goal of reducing power and hypervisor loads when the system
is idle. This is done by removing the regular ticking clock when
the system is idle, so that in theory long sleep periods are
possible for the hardware (or hypervisor). The kernel portion of
this works great, however when using a gnome desktop there are many
however when using a gnome desktop there are many timers going off
all the time for userspace, so many that the actual savings are not
so great (about 250 events per second)."
Given that so many applications wake up so often, what emacs does
might not be measurable at this point, but it might make a difference
in the future.
(If anyone is interested in more details, the bug tracking this