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The rack stack, with respect to the rack bits in it, was originally built based on an early I-D of rack. In fact at that time the TLP bits were in a separate I-D. The dynamic reordering window based on DSACK events was not present in rack at that time. It is now part of the RFC and we need to update our stack to include these features. However we want to have a way to control the feature so that we can, if the admin decides, make it stay the same way system wide as well as via socket option. The new sysctl and socket option has the following meaning for setting: 00 (0) - Keep the old way, i.e. reordering window is 1 and do not use DSACK bytes to add to reorder window 01 (1) - Change the Reordering window to 1/4 of an RTT but do not use DSACK bytes to add to reorder window 10 (2) - Keep the reordering window as 1, but do use SACK bytes to add additional 1/4 RTT delay to the reorder window 11 (3) - reordering window is 1/4 of an RTT and add additional DSACK bytes to increase the reordering window (RFC behavior) The default currently in the sysctl is 3 so we get standards based behavior. Reviewed by: tuexen Sponsored by: Netflix Inc. Differential Revision: https://reviews.freebsd.org/D31506
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README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. If you are receiving this as part of a GDB release, see the file gdb/README. If with a binutils release, see binutils/README; if with a libg++ release, see libg++/README, etc. That'll give you info about this package -- supported targets, how to use it, how to report bugs, etc. It is now possible to automatically configure and build a variety of tools with one command. To build all of the tools contained herein, run the ``configure'' script here, e.g.: ./configure make To install them (by default in /usr/local/bin, /usr/local/lib, etc), then do: make install (If the configure script can't determine your type of computer, give it the name as an argument, for instance ``./configure sun4''. You can use the script ``config.sub'' to test whether a name is recognized; if it is, config.sub translates it to a triplet specifying CPU, vendor, and OS.) If you have more than one compiler on your system, it is often best to explicitly set CC in the environment before running configure, and to also set CC when running make. For example (assuming sh/bash/ksh): CC=gcc ./configure make A similar example using csh: setenv CC gcc ./configure make Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems.
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