RPM Builds and System Optimization
Nifty Hat Mitch
mitch48 at sbcglobal.net
Thu Aug 26 17:40:33 UTC 2004
On Thu, Aug 26, 2004 at 12:26:15PM -0400, David Cary Hart wrote:
> Most of the Fedora RPMS are provided as i386. These can easily be
> recompiled as:
>
> rpmbuild --target i686 --rebuild package.src.rpm
>
> a. Is it worth it? In other words, is there really a performance gain in
> packages like - say - KDE?
>
> b. Assuming that I installed the RPM sources and built from the spec
> file, as long as I am at it, could I also benefit by changing some of
> the FLAGS?
>
> For example:
> CHOST="i686-pc-linux-gnu"
> CFLAGS="-march=pentium4 -O3 -pipe -fomit-frame-pointer"
You will only know for sure if you try it.
However I look at the activity on my system and it is mostly
idle or when sluggish disk I/O bound. This tells me that
CPU specific optimizations are not critical for my use.
In my opinion the most productive place for code optimizations is
library functions not common application space.
A productive operational trick that feels like an optimization is a
little readahead script that keeps my commonly used bits (applications
and libraries) in DRAM. See /etc/init.d/readahead
--
T o m M i t c h e l l
Just say no to 74LS73 in 2004
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