Date: Fri, 27 Aug 2010 10:16:32 +0000 (UTC) From: Andre Oppermann <andre@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/netinet tcp_input.c tcp_output.c tcp_var.h Message-ID: <201008271016.o7RAGpBf066318@repoman.freebsd.org>
next in thread | raw e-mail | index | archive | help
andre 2010-08-27 10:16:32 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_7)
sys/netinet tcp_input.c tcp_output.c tcp_var.h
Log:
SVN rev 211871 on 2010-08-27 10:16:32Z by andre
MFC r211464:
If a TCP connection has been idle for one retransmit timeout or more
it must reset its congestion window back to the initial window.
RFC3390 has increased the initial window from 1 segment to up to
4 segments.
The initial window increase of RFC3390 wasn't reflected into the
restart window which remained at its original defaults of 4 segments
for local and 1 segment for all other connections. Both values are
controllable through sysctl net.inet.tcp.local_slowstart_flightsize
and net.inet.tcp.slowstart_flightsize.
The increase helps TCP's slow start algorithm to open up the congestion
window much faster.
Reviewed by: lstewart
MFC after: 1 week
Revision Changes Path
1.370.2.20 +1 -1 src/sys/netinet/tcp_input.c
1.141.2.16 +26 -15 src/sys/netinet/tcp_output.c
1.157.2.11 +1 -0 src/sys/netinet/tcp_var.h
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201008271016.o7RAGpBf066318>