[rc5] RC5-64 v2.6401 client speed vs RC5-56 v2.004

Joey Sum jpsum1 at pop.uky.edu
Thu Oct 23 02:21:52 EDT 1997


While running the RC5-64 v2.6401 client on my Win95/Cyrix 6x86 machine,
I've noticed 2 things:

1. The speed of the RC5-64 v2.6401 client (262 kk/s) is slower than the RC5-56
v2.004 (280 kk/s) on my Cyrix 6x86-166+.  In both cases, I use the Cyrix
specific code.

2. The nice settings seem to be different in the RC5-64 v2.6401 client.  I ran
the RC5-56 v2.004 client on nice 2 (normal) and never noticed any slowdown or
lag.  Running the RC5-64 v2.6401 client on nice 2 shows a bit of lag and
slower performance when trying to run something else.  (Nice 1 is fine).

Is this normal, or are there more assembler optimizations that could be done
to make the RC5-64 client faster and better performing (as Remi's work did to
the RC5-56 v2.x clients?

Joey

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