diff options
| author | Bruno Randolf <[email protected]> | 2010-12-02 19:50:37 +0900 |
|---|---|---|
| committer | John W. Linville <[email protected]> | 2010-12-06 15:58:43 -0500 |
| commit | af5568843594fb71055debe36e521fa8072fcecc (patch) | |
| tree | 4f35966cb4e1018b05c87d7a10c337d888949e22 /tools/perf/scripts/python/netdev-times.py | |
| parent | 5dcc03fe29537edd7819f5b121bf3d779693f37b (diff) | |
lib: Improve EWMA efficiency by using bitshifts
Using bitshifts instead of division and multiplication should improve
performance. That requires weight and factor to be powers of two, but i think
this is something we can live with.
Thanks to Peter Zijlstra for the improved formula!
Signed-off-by: Bruno Randolf <[email protected]>
--
v2: use log2.h functions
Signed-off-by: John W. Linville <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/netdev-times.py')
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