From f423e12e98b4ad30e14f7b1ab259f36d75cb1c04 Mon Sep 17 00:00:00 2001 From: Stefano Brivio Date: Mon, 8 Dec 2025 08:02:01 +0100 Subject: tcp: Change usage factor of sending buffer in tcp_get_sndbuf() to 75% Now that we have a new clamped_scale() function, which makes it simple to specify a precise usage factor, change the amount of sending buffer we want to use at and above 4 MiB: 75% looks perfectly safe. Signed-off-by: Stefano Brivio --- tcp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tcp.c b/tcp.c index 026546a..37aceed 100644 --- a/tcp.c +++ b/tcp.c @@ -773,7 +773,7 @@ static void tcp_rtt_dst_check(const struct tcp_tap_conn *conn, } /** - * tcp_get_sndbuf() - Get, scale SO_SNDBUF between thresholds (1 to 0.5 usage) + * tcp_get_sndbuf() - Get, scale SO_SNDBUF between thresholds (1 to 0.75 usage) * @conn: Connection pointer */ static void tcp_get_sndbuf(struct tcp_tap_conn *conn) @@ -788,7 +788,7 @@ static void tcp_get_sndbuf(struct tcp_tap_conn *conn) return; } - v = clamped_scale(sndbuf, sndbuf, SNDBUF_SMALL, SNDBUF_BIG, 50); + v = clamped_scale(sndbuf, sndbuf, SNDBUF_SMALL, SNDBUF_BIG, 75); SNDBUF_SET(conn, MIN(INT_MAX, v)); } -- cgit v1.2.3