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tcp.7: Document /proc file tcp_no_metrics_save (new in Linux 2.6.6) 

Text taken from Documentation/networking/ip-sysctl.txt

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2008-11-20 16:56:21 -05:00
parent 8efc4ff594
commit 98eaadb06b
1 changed files with 12 additions and 0 deletions
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man7/tcp.7
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@ -435,6 +435,18 @@ will allocate.
This value overrides any other limits
imposed by the kernel.
.TP
.IR tcp_no_metrics_save " (Boolean; default: disabled; since Linux 2.6.6)"
.\" The following is from 2.6.28-rc4: Documentation/networking/ip-sysctl.txt
By default, TCP saves various connection metrics in the route cache
when the connection closes, so that connections established in the
near future can use these to set initial conditions.
Usually, this increases overall performance,
but it may sometimes cause performance
degradation.
If
.I tcp_no_metrics_save
is enabled, TCP will not cache metrics on closing connections.
.TP
.IR tcp_orphan_retries " (integer; default: 8)"
The maximum number of attempts made to probe the other
end of a connection which has been closed by our end.