Discrepancy in measuring performance?
William E. Skeith III
wes_zilla at yahoo.com
Tue Apr 3 06:30:45 CEST 2012
Sorry for generating so much traffic in one day : ( I have (sort of)
figured out what the issue is. It turns out I am affected by a bug in
the linux kernel (or perhaps just my distribution):
I ran powertop, and noticed *tons* of interrupts from acpi. After
booting with acpi disabled, I got exactly the results I expected from my
test program. Sorry for wasting everyone's time.
p.s. I'm now extra impressed by the speed program for finding a way to
make itself immune to this.
More information about the gmp-discuss