diff options
| author | Yuchung Cheng <[email protected]> | 2022-05-18 17:34:10 -0700 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2022-05-19 18:49:50 -0700 |
| commit | 9ad084d666194c20a30e3589cbfaf971dae55c24 (patch) | |
| tree | 59657475684dfced6cdf223b3eddbdea038396dd /tools/perf/scripts/python/bin/flamegraph-record | |
| parent | 7ebe52f555de21a1f239b963aa49972a6916a49a (diff) | |
tcp: improve PRR loss recovery
This patch improves TCP PRR loss recovery behavior for a corner
case. Previously during PRR conservation-bound mode, it strictly
sends the amount equals to the amount newly acked or s/acked.
The patch changes s.t. PRR may send additional amount that was banked
previously (e.g. application-limited) in the conservation-bound
mode, similar to the slow-start mode. This unifies and simplifies the
algorithm further and may improve the recovery latency. This change
still follow the general packet conservation design principle and
always keep inflight/cwnd below the slow start threshold set
by the congestion control module.
PRR is described in RFC 6937. We'll include this change in the
latest revision rfc6937-bis as well.
Reported-by: Neal Cardwell <[email protected]>
Signed-off-by: Yuchung Cheng <[email protected]>
Signed-off-by: Neal Cardwell <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/bin/flamegraph-record')
0 files changed, 0 insertions, 0 deletions