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| author |   Eric Dumazet <edumazet@google.com> | 2020-04-30 10:35:43 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-04-30 13:24:01 -0700 |
| commit | a70437cc09a11771870e9f6bfc0ba1237161daa8 (patch) | |
| tree | 2160cfb6274072fcc4350afbbd5aa7ebf1580a4c /net/ipv4/sysctl_net_ipv4.c | |
| parent | tcp: tcp_sack_new_ofo_skb() should be more conservative (diff) | |
| download | linux-dev-a70437cc09a11771870e9f6bfc0ba1237161daa8.tar.xz linux-dev-a70437cc09a11771870e9f6bfc0ba1237161daa8.zip | |
tcp: add hrtimer slack to sack compression
Add a sysctl to control hrtimer slack, default of 100 usec.
This gives the opportunity to reduce system overhead,
and help very short RTT flows.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/sysctl_net_ipv4.c')
| -rw-r--r-- | net/ipv4/sysctl_net_ipv4.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index 95ad71e76cc3..3a628423d27b 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -1330,6 +1330,13 @@ static struct ctl_table ipv4_net_table[] = { .proc_handler = proc_doulongvec_minmax, }, { + .procname = "tcp_comp_sack_slack_ns", + .data = &init_net.ipv4.sysctl_tcp_comp_sack_slack_ns, + .maxlen = sizeof(unsigned long), + .mode = 0644, + .proc_handler = proc_doulongvec_minmax, + }, + { .procname = "tcp_comp_sack_nr", .data = &init_net.ipv4.sysctl_tcp_comp_sack_nr, .maxlen = sizeof(int), |