[kwlug disc.] any folks using tricks for better linux performance?

[Robert P. J. Day]

On Sat, 25 Aug 2007, Chris Bruner wrote:

> Robert P. J. Day wrote:
> >   i'm perusing some online docs related to speeding up (primarily
> > embedded) linux systems, and i'm curious how many people on this list
> > are using any of the following in a practical way to either increase
> > speed or save space:
> >
> > 1) running the kernel XIP (execute in place)
> > 2) booting without sysfs
> > 3) using "kexec" for reboots
> >
> > or any other somewhat atypical techniques for better performance.
> > like i said, i'm just curious.
> >
> > rday
> >
> >
> Check out powertop, from Intel. It is a power savings tool, which
> surprisingly has speed things up as well (for me). It gives
> suggestions on kernel configurations as well as sound card and a few
> other things.

amusingly, i was just looking at that earlier in the day.  but while
it's great for identifying wasted cycles, i was more interested in
tricks like the ones above, where you actually do something a little
off the beaten path to try to speed things up to save space.

i've known about XIP for a while but, with the cheapness of RAM these
days, i'm not convinced that it's all that useful anymore.  perhaps
once upon a time, but not now.  and, certainly, only in the context of
embedded systems, if even that.

rday
-- 
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Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry
Waterloo, Ontario, CANADA

http://crashcourse.ca
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