http://bugzilla.suse.com/show_bug.cgi?id=1131437
http://bugzilla.suse.com/show_bug.cgi?id=1131437#c5
--- Comment #5 from Jan Kara ---
OK, when the machine is booted with intel_idle.max_cstate=1, the numbers are
much more stable (did run just for 1, 2, and 4 clients):
Amean 1 36.13 ( 0.00%) 35.76 ( 1.03%) 36.18 (
-0.14%
) 36.44 ( -0.86%) 36.43 ( -0.82%)
Amean 2 34.63 ( 0.00%) 31.68 ( 8.50%) 31.83 (
8.08%
) 31.59 ( 8.77%) 31.70 ( 8.45%)
Amean 4 40.73 ( 0.00%) 38.24 ( 6.13%) 39.73 (
2.46%
) 40.53 ( 0.51%) 40.29 ( 1.09%)
Stddev 1 4.65 ( 0.00%) 4.17 ( 10.35%) 4.44 (
4.43%
) 3.59 ( 22.76%) 4.39 ( 5.45%)
Stddev 2 6.42 ( 0.00%) 6.18 ( 3.81%) 6.16 (
4.09%) 6.38 ( 0.58%) 6.10 ( 4.97%)
Stddev 4 5.94 ( 0.00%) 5.57 ( 6.11%) 5.89 (
0.80%) 5.76 ( 2.97%) 5.64 ( 4.97%)
I'm going to verify now how stock 4.20 dbench numbers are / aren't stable to
see whether this instability is a recent thing.
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