Cc: Jeremy Fitzhardinge <jeremy@...>, Andi Kleen <andi@...>, Thomas Gleixner <tglx@...>, Linus Torvalds <torvalds@...>, Steven Rostedt <rostedt@...>, LKML <linux-kernel@...>, Ingo Molnar <mingo@...>, Peter Zijlstra <peterz@...>, Andrew Morton <akpm@...>, David Miller <davem@...>, Roland McGrath <roland@...>, Ulrich Drepper <drepper@...>, Rusty Russell <rusty@...>, Gregory Haskins <ghaskins@...>, Arnaldo Carvalho de Melo <acme@...>, Luis Claudio R. Goncalves <lclaudio@...>, Clark Williams <williams@...>
Just a curious run of Mathieu's micro benchmark:
NR_TESTS 10000000
test empty cycles : 182500444
test 2-bytes jump cycles : 195969127
test 5-bytes jump cycles : 197000202
test 3/2 nops cycles : 201333408
test 5-bytes nop with long prefix cycles : 205000067
test 5-bytes P6 nop cycles : 205000227
test Generic 1/4 5-bytes nops cycles : 200000077
test K7 1/4 5-bytes nops cycles : 197549045
And this was on a Pentium III 847.461 MHz box (my old toshiba laptop)
The jumps here played the best, but that could just be cache issues. But
interesting to see that of the nops, the K7 1/4 faired the best.
-- Steve
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