gzip performance test

[Jean Francois Martinez]

In my previous post I forgot to mention that when benchmarkiing gzip you
should alao check for code size: probably not a problem for gzip but  in 
other programs increases in code size can cause slowdowns due to cache and 
TLB exhaustion.   Also in real world there are other programs competing for 
memory, TLB and cache so generalized use of a compiler who generates faster 
but bigger code can make the whole load running slower.

			JFM