Speed tests - G4-400 and PIII-600

[jlquinn at us.ibm.com]

I realized after sending off my reply that I hadn't bothered to read your
email completely before responding.  For starters, you should try
rebuilding your test program with gcc-2.95.2 or perhaps with a recent
snapshot of the development branch of gcc.  This will at least get you the
latest compiler optimizations available.

How intensive is the computation on the image?  If you are running through
a large image with short computations at each pixel, you may be limited by
memory bandwidth.  Both of those machines have 100Mhz busses, right?  In
this case, you'd be roughly even at the start from a raw hardware viewpoint
and then the fact that x86 tends to receive more optimization work in the
compiler might push it into the lead.

Jerry Quinn
jlquinn at us.ibm.com


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/