Re: pros/cons of installing from source
Biggest contenders for optimisation are the kernel and libc. Most
applications are mainly a series of calls to these two so won't directly
benefit from by being compiled with *magical* flags.
Debian supply both optimised kernels and to a lesser degree optimised
libc packages. Use of SIMD extensions etc is something totally
different, and compiler flags aren't going to do all that much there
really...
Think of all the dolphins that will die because of the electricity
wasted pointlessly compiling packages. ^^
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