From: Wei Wang <wei...@google.com> Date: Tue, 31 Jul 2018 17:46:19 -0700
> From: Wei Wang <wei...@google.com> > > This patch series adds 3 RFC4898 stats: > 1. tcpEStatsPerfHCDataOctetsOut > 2. tcpEStatsPerfOctetsRetrans > 3. tcpEStatsStackDSACKDups > and an addtional stat to record the number of data packet reordering > events seen: > 4. tcp_reord_seen > > Together with the existing stats, application can use them to measure > the retransmission rate in bytes, exclude spurious retransmissions > reflected by DSACK, and keep track of the reordering events on live > connections. > In particular the networks with different MTUs make bytes-based loss stats > more useful. Google servers have been using these stats for many years to > instrument transport and network performance. > > Note: The first patch is a refactor to add a helper to calculate > opt_stats size in order to make later changes cleaner. Series applied, thank you.
