On Tue, Oct 28, 2025 at 7:58 AM Matthieu Baerts (NGI0) <[email protected]> wrote: > > From: Eric Dumazet <[email protected]> > > While chasing yet another receive autotuning bug, > I found useful to add rcv_ssthresh, window_clamp and rcv_wnd. > > tcp_stream 40597 [068] 2172.978198: tcp:tcp_rcvbuf_grow: time=50307 > rtt_us=50179 copied=77824 inq=0 space=40960 ooo=0 scaling_ratio=219 > rcvbuf=131072 rcv_ssthresh=107474 window_clamp=112128 rcv_wnd=110592 > tcp_stream 40597 [068] 2173.028528: tcp:tcp_rcvbuf_grow: time=50336 > rtt_us=50206 copied=110592 inq=0 space=77824 ooo=0 scaling_ratio=219 > rcvbuf=509444 rcv_ssthresh=328658 window_clamp=435813 rcv_wnd=331776 > tcp_stream 40597 [068] 2173.078830: tcp:tcp_rcvbuf_grow: time=50305 > rtt_us=50070 copied=270336 inq=0 space=110592 ooo=0 scaling_ratio=219 > rcvbuf=509444 rcv_ssthresh=431159 window_clamp=435813 rcv_wnd=434176 > tcp_stream 40597 [068] 2173.129137: tcp:tcp_rcvbuf_grow: time=50313 > rtt_us=50118 copied=434176 inq=0 space=270336 ooo=0 scaling_ratio=219 > rcvbuf=2457847 rcv_ssthresh=1299511 window_clamp=2102611 rcv_wnd=1302528 > tcp_stream 40597 [068] 2173.179451: tcp:tcp_rcvbuf_grow: time=50318 > rtt_us=50041 copied=1019904 inq=0 space=434176 ooo=0 scaling_ratio=219 > rcvbuf=2457847 rcv_ssthresh=2087445 window_clamp=2102611 rcv_wnd=2088960 > > Signed-off-by: Eric Dumazet <[email protected]> > Signed-off-by: Matthieu Baerts (NGI0) <[email protected]> > ---
Reviewed-by: Neal Cardwell <[email protected]> Thanks, Eric and Matthieu! neal
