diff options
| author | Yuchung Cheng <[email protected]> | 2017-10-04 12:59:59 -0700 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2017-10-05 21:24:47 -0700 |
| commit | 043b87d7599ed8e86a33f4cbc3f062d57e263711 (patch) | |
| tree | 349714731b8aab5ab172b8c199c0f084ff54dc53 /tools/perf/scripts/python | |
| parent | e2080072ed2d98a55ae69d95dea60ff7a17cddd5 (diff) | |
tcp: more efficient RACK loss detection
Use the new time-ordered list to speed up RACK. The detection
logic is identical. But since the list is chronologically ordered
by skb_mstamp and contains only skbs not yet acked or sacked,
RACK can abort the loop upon hitting skbs that were sent more
recently. On YouTube servers this patch reduces the iterations on
write queue by 40x. The improvement is even bigger with large
BDP networks.
Signed-off-by: Yuchung Cheng <[email protected]>
Signed-off-by: Neal Cardwell <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions