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Add a sentence on the TCP retransmission timer changes

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and the TCP bandwidth delay product window limiting features.

note: the -current version of the retransmit timer defaults
to 200ms while the -stable version defaults to 1 second for now.
MFC after:	3 days
This commit is contained in:
Matthew Dillon 2002-08-25 01:59:07 +00:00
parent 667137d174
commit 89bed25f9f
2 changed files with 28 additions and 0 deletions
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14
release/doc/en_US.ISO8859-1/relnotes/article.sgml
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@ -336,6 +336,20 @@
pasting, by default bound to
<keycap>Shift</keycap>-<keycap>Insert</keycap>.</para>
<para>The &man.tcp.4; protocol's retransmission timer can now be
manipulated with two sysctl's,
<varname>net.inet.tcp.rexmit_min</varname> and
<varname>net.inet.tcp.rexmit_slop</varname>. The default has
been reduced from one second to 200ms (similar to the Linux default)
in order to better handle hicups over interactive connections and
improve recovery over lossy fast connections such as wireless links.</para>
<para>The &man.tcp.4; protocol now has the ability to dynamically
limit the send-side window to maximize bandwidth and minimize
round trip times. The feature can be enabled via the
<varname>net.inet.tcp.inflight_enable</varname>
sysctl.</para>
<para role="historic">Support for USB devices was added to the
<filename>GENERIC</filename> kernel and to the installation
programs to support USB devices out of the box. Note that SRM

14
release/doc/en_US.ISO8859-1/relnotes/common/new.sgml
View file

@ -336,6 +336,20 @@
pasting, by default bound to
<keycap>Shift</keycap>-<keycap>Insert</keycap>.</para>
<para>The &man.tcp.4; protocol's retransmission timer can now be
manipulated with two sysctl's,
<varname>net.inet.tcp.rexmit_min</varname> and
<varname>net.inet.tcp.rexmit_slop</varname>. The default has
been reduced from one second to 200ms (similar to the Linux default)
in order to better handle hicups over interactive connections and
improve recovery over lossy fast connections such as wireless links.</para>
<para>The &man.tcp.4; protocol now has the ability to dynamically
limit the send-side window to maximize bandwidth and minimize
round trip times. The feature can be enabled via the
<varname>net.inet.tcp.inflight_enable</varname>
sysctl.</para>
<para role="historic">Support for USB devices was added to the
<filename>GENERIC</filename> kernel and to the installation
programs to support USB devices out of the box. Note that SRM