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Optimizing Linux kernel, libraries, software

Posted on 2004-04-14
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Last Modified: 2013-12-15
I've installed Linux Slackware 9.1. This distribution is compiled for 486 architecture. I've got P4 class processor and want use this machine as production server, so I would like to know, how to optimize the system for best performance. I want to compile all the software from source code, let these use all P4 processor features. But I think, I have to recompile libc/glibc frst, because these are compiled for 486, too (don't know how to do it). Then I have to compile new kernel with P4 support (this is not problem, but I don't know, wheter linux kernel uses libc/glibc). I have no idea about order of these steps. Short, what I need to know:
a) Do I have to recompile libc/glibc, how?
b) Does the kernel use libc/glibc?(have to compile kernel after libc/glibc recompilation?)
c) How to compile programs to force compiler to use P4 features and newly recompiled libc/glibc libraries
Every idea or links will help.
Thanx
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Question by:karelrambousek
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by:bobgunzel
ID: 10831059
Basically compiling for a specific processor affects only the kernel. You don't need to recompile the software. So you only have to build a new kernel.

Bob Gunzel
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by:karelrambousek
ID: 10831565
This is not true!!! If I use old libc/glibc compiled for 486 CPUs, the performance won't be the best. This question is not easy, I know.
So waiting for your answers. EXPERTS !!! :)
Thanx
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bobgunzel earned 500 total points
ID: 10831944
In that case you'll have to get the sources and the slackware build-files, like gcc.SlackBuild, change the options parameter to O3 and use pentium4 for the -march and -mcpu options.
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