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tcp.7: Change default value of tcp_frto 

The default changed in c96fd3d461fa495400df24be3b3b66f0e0b152f9
(Linux 2.6.24).

Signed-off-by: Ruben Kerkhof <ruben@rubenkerkhof.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Ruben Kerkhof 2017-05-19 12:03:09 +02:00 committed by Michael Kerrisk
parent a42c0776f2
commit d6a42783c8
1 changed files with 4 additions and 1 deletions
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man7/tcp.7
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@ -472,7 +472,7 @@ In Linux 2.2, the default value was 180.
.\"
.\" The following is from 2.6.12: Documentation/networking/ip-sysctl.txt
.TP
.IR tcp_frto " (integer; default: 0; since Linux 2.4.21/2.6)"
.IR tcp_frto " (integer; default: see below; since Linux 2.4.21/2.6)"
.\" Since 2.4.21/2.5.43
Enable F-RTO, an enhanced recovery algorithm for TCP retransmission
timeouts (RTOs).
@ -485,13 +485,16 @@ This file can have one of the following values:
.RS
.IP 0 3
Disabled.
This was the default up to and including Linux 2.6.23.
.IP 1
The basic version F-RTO algorithm is enabled.
.IP 2
.\" commit c96fd3d461fa495400df24be3b3b66f0e0b152f9
Enable SACK-enhanced F-RTO if flow uses SACK.
The basic version can be used also when
SACK is in use though in that case scenario(s) exists where F-RTO
interacts badly with the packet counting of the SACK-enabled TCP flow.
This value is the default since Linux 2.6.24.
.RE
.IP
Before Linux 2.6.22, this parameter was a Boolean value,