[ovs-build] Failed: istokes/ovs#675 (freq_number - a46e79b)

Travis CI builds at travis-ci.org
Wed Oct 10 11:42:41 UTC 2018


Build Update for istokes/ovs
-------------------------------------

Build: #675
Status: Failed

Duration: 50 mins and 40 secs
Commit: a46e79b (freq_number)
Author: Ilya Maximets
Message: dpif-netdev-perf: Clarify frequency number.

'dpif-netdev/pmd-perf-show' command prints the frequency number
calculated from the total number of cycles spent for iterations
for the measured period. This number could be confusing, because
users may think that it should be equal to CPU frequency, especially
on non-x86 systems where TSC frequency likely does not match with
CPU one.

Moreover, counted TSC cycles could differ from the HW TSC cycles
in case of a large number of PMD reloads, because cycles spent
outside of the main polling loop are not taken into account anywhere.
In this case the frequency will not match even TSC frequency.

Let's clarify the meaning in order to avoid this misunderstanding.
'Cycles' replaced with 'Used TSC cycles', which describes how many TSC
cycles consumed by the main polling loop. % of the total TSC cycles
now printed instead of GHz frequency, because GHz is unclear for
understanding, especially without knowing the exact TSC frequency.

Signed-off-by: Ilya Maximets <i.maximets at samsung.com>
Acked-by: Flavio Leitner <fbl at sysclose.org>

View the changeset: https://github.com/istokes/ovs/compare/35fe9efb2f02^...a46e79be4279

View the full build log and details: https://travis-ci.org/istokes/ovs/builds/439579412?utm_medium=notification&utm_source=email

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