diff options
| author | Eric Dumazet <[email protected]> | 2012-07-29 20:52:21 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2012-08-10 16:52:54 -0700 |
| commit | 2359a47671fc4fb0fe5e9945f76c2cb10792c0f8 (patch) | |
| tree | 2ff0ca201a2797f26414dcfe5df90ededb94375b /tools/perf/util/trace-event-scripting.c | |
| parent | 55461ddbcb0b36d1575e01fb4f130c609ca1cfee (diff) | |
codel: refine one condition to avoid a nul rec_inv_sqrt
One condition before codel_Newton_step() was not good if
we never left the dropping state for a flow. As a result
rec_inv_sqrt was 0, instead of the ~0 initial value.
codel control law was then set to a very aggressive mode, dropping
many packets before reaching 'target' and recovering from this problem.
To keep codel_vars_init() as efficient as possible, refine
the condition to make sure rec_inv_sqrt initial value is correct
Many thanks to Anton Mich for discovering the issue and suggesting
a fix.
Reported-by: Anton Mich <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions