diff options
| author | Philo Lu <[email protected]> | 2024-04-21 12:20:09 +0800 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2024-04-25 08:52:12 +0100 |
| commit | 2bf90a57f0e682872c5cfb66ffa45e432bb9c7ae (patch) | |
| tree | 3e523116c5e7de8d0a426fa022f7a4c13966e453 /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/SchedGui.py | |
| parent | 14b5fb2145caeb909a1cd57d9cd5e0c3cd005642 (diff) | |
tcp: update sacked after tracepoint in __tcp_retransmit_skb
Marking TCP_SKB_CB(skb)->sacked with TCPCB_EVER_RETRANS after the
traceopint (trace_tcp_retransmit_skb), then we can get the
retransmission efficiency by counting skbs w/ and w/o TCPCB_EVER_RETRANS
mark in this tracepoint.
We have discussed to achieve this with BPF_SOCK_OPS in [0], and using
tracepoint is thought to be a better solution.
[0]
https://lore.kernel.org/all/[email protected]/
Signed-off-by: Philo Lu <[email protected]>
Reviewed-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/SchedGui.py')
0 files changed, 0 insertions, 0 deletions