[#35446] [Ruby 1.9 - Bug #4477][Open] Kernel:exec and backtick (`) don't work for certain system commands — Joachim Wuttke <j.wuttke@...>

10 messages 2011/03/07

[#35476] [Ruby 1.9 - Bug #4489][Open] [PATCH] Encodings with /-(unix|dos|mac)\Z/ — "James M. Lawrence" <quixoticsycophant@...>

20 messages 2011/03/10

[#35552] [Ruby 1.9 - Feature #4523][Open] Kernel#require to return the path of the loaded file — Alex Young <alex@...>

14 messages 2011/03/24

[#35565] [Ruby 1.9 - Feature #4531][Open] [PATCH 0/7] use poll() instead of select() in certain cases — Eric Wong <normalperson@...>

33 messages 2011/03/28

[#35566] [Ruby 1.9 - Feature #4532][Open] [PATCH] add IO#pread and IO#pwrite methods — Eric Wong <normalperson@...>

12 messages 2011/03/28

[#35586] [Ruby 1.9 - Feature #4538][Open] [PATCH (cleanup)] avoid unnecessary select() calls before doing I/O — Eric Wong <normalperson@...>

9 messages 2011/03/29

[ruby-core:35448] Re: Power consumption of timer thread

From: Mark Somerville <mark@...>
Date: 2011-03-07 10:15:37 UTC
List: ruby-core #35448
Hi Chris!

On Tue, Nov 16, 2010 at 01:29:31AM +0900, Chris Mason wrote:
> Excerpts from SASADA Koichi's message of 2010-11-14 16:34:20 -0500:
> > 
> 
> Thank you for spending time on this issue.
> 
> If you're running an unplugged laptop, powertop will show actual power
> consumption from the battery.  But, your power meter results are also
> going to be accurate.
 
<snip>

> The power consumption is only really increased if the machine is
> otherwise idle.  If the machine is able to power down a CPU, waking that
> CPU up for the timer thread is fairly expensive.  If the CPU is already
> awake doing other tasks, the timer thread has a fairly small cost.

In case you missed it, you may be interested in checking out a different
thread/patch[1] on ruby-core. It would be great to hear some more
feedback about this.

[1] - http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-core/33456

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