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Enable the following TCP options by default to give it more exposure:

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rfc3042  Limited retransmit
 rfc3390  Increasing TCP's initial congestion Window
 inflight TCP inflight bandwidth limiting

All my production server have it enabled and there have been no
issues.  I am confident about having them on by default and it gives
us better overall TCP performance.

Reviewed by:	sam (mentor)
This commit is contained in:
Andre Oppermann 2004-01-06 23:29:46 +00:00
parent 87c3bd2755
commit dba7bc6a65
4 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
sys/netinet/tcp_input.c
View File

@ -125,11 +125,11 @@ SYSCTL_INT(_net_inet_tcp, OID_AUTO, drop_synfin, CTLFLAG_RW,
&drop_synfin, 0, "Drop TCP packets with SYN+FIN set");
#endif
static int tcp_do_rfc3042 = 0;
static int tcp_do_rfc3042 = 1;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, rfc3042, CTLFLAG_RW,
&tcp_do_rfc3042, 0, "Enable RFC 3042 (Limited Transmit)");
static int tcp_do_rfc3390 = 0;
static int tcp_do_rfc3390 = 1;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, rfc3390, CTLFLAG_RW,
&tcp_do_rfc3390, 0,
"Enable RFC 3390 (Increasing TCP's Initial Congestion Window)");

4
sys/netinet/tcp_reass.c
View File

@ -125,11 +125,11 @@ SYSCTL_INT(_net_inet_tcp, OID_AUTO, drop_synfin, CTLFLAG_RW,
&drop_synfin, 0, "Drop TCP packets with SYN+FIN set");
#endif
static int tcp_do_rfc3042 = 0;
static int tcp_do_rfc3042 = 1;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, rfc3042, CTLFLAG_RW,
&tcp_do_rfc3042, 0, "Enable RFC 3042 (Limited Transmit)");
static int tcp_do_rfc3390 = 0;
static int tcp_do_rfc3390 = 1;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, rfc3390, CTLFLAG_RW,
&tcp_do_rfc3390, 0,
"Enable RFC 3390 (Increasing TCP's Initial Congestion Window)");

2
sys/netinet/tcp_subr.c
View File

@ -159,7 +159,7 @@ SYSCTL_INT(_net_inet_tcp, OID_AUTO, isn_reseed_interval, CTLFLAG_RW,
* 1024 exists only for debugging. A good production default would be
* something like 6100.
*/
static int tcp_inflight_enable = 0;
static int tcp_inflight_enable = 1;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, inflight_enable, CTLFLAG_RW,
&tcp_inflight_enable, 0, "Enable automatic TCP inflight data limiting");

2
sys/netinet/tcp_timewait.c
View File

@ -159,7 +159,7 @@ SYSCTL_INT(_net_inet_tcp, OID_AUTO, isn_reseed_interval, CTLFLAG_RW,
* 1024 exists only for debugging. A good production default would be
* something like 6100.
*/
static int tcp_inflight_enable = 0;
static int tcp_inflight_enable = 1;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, inflight_enable, CTLFLAG_RW,
&tcp_inflight_enable, 0, "Enable automatic TCP inflight data limiting");