Cc: Paul Rolland <rol@...>, David Newall <david@...>, H. Peter Anvin <hpa@...>, Krzysztof Halasa <khc@...>, Pavel Machek <pavel@...>, Andi Kleen <andi@...>, Alan Cox <alan@...>, David P. Reed <dpreed@...>, <linux-kernel@...>, Thomas Gleixner <tglx@...>, Ingo Molnar <mingo@...>, <rol@...>
Here's my results on a PIII Xeon, 550mhz, 440GX chipset, and an ISA
slot, which until recently was actually used with an 8 port serial
card:
jfsnew:~/src> sudo ./port80
out: 729
in : 348
jfsnew:~/src> sudo ./port80
out: 729
in : 354
jfsnew:~/src> sudo ./port80
out: 729
in : 350
jfsnew:~/src> sudo ./port80
out: 728
in : 346
jfsnew:~/src> sudo ./port80
out: 730
in : 340
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