freebsd with flexible iflib nic queues
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Bruce Evans 0249823ecb Align the offset in vn_rdwr_inchunks() so that at most the first and
the last chunk are misaligned relative to a MAXBSIZE byte boundary.
vn_rdwr_inchunks() is used mainly for elf core dumps, and elf sections
are usually perfectly misaligned relative to MAXBSIZE, and chunking
prevents the file system from doing much realigning.

This gives a surprisingly large speedup for core dumps -- from 50 to
13 seconds for a 512MB core dump here.  The pessimization was mostly
from an interaction of the misalignment with IO_DIRECT.  It increased
the number of i/o's for each chunk by a factor of 5 (3 writes and 2
read-before-writes instead of 1 write).
2004-03-13 02:56:27 +00:00
bin And a bandaid so that the output of "available space" is correct when 2004-03-09 10:02:44 +00:00
contrib This commit was generated by cvs2svn to compensate for changes in r126854, 2004-03-11 18:04:03 +00:00
crypto Update VersionAddendum in config files and man pages. 2004-02-26 11:54:03 +00:00
etc If /conf/diskless_remount exists, use it to remount the entire /conf 2004-03-12 04:40:16 +00:00
games Label @ as being AC (since it's constructed like a prosign). 2004-02-20 13:46:39 +00:00
gnu Just pass -DCRT_BEGIN as an option to mkdep(1), no need to override 2004-03-06 07:34:51 +00:00
include Add skeleton build dirs for pf userland: 2004-02-28 21:50:50 +00:00
kerberos5 style.Makefile(5). 2004-02-05 18:51:52 +00:00
lib Initial support for C99's (or is it POSIX.1-2001's?) MATH_ERRNO, 2004-03-12 12:02:03 +00:00
libexec Link pf to the build and install: 2004-03-08 22:03:29 +00:00
release New errata: SA-04:04. Also fix a typo in the URL for SA-04:03. 2004-03-05 04:19:06 +00:00
rescue Add id(1) (aka groups(1) aka whoami(1)) since it is used by install.sh. 2004-03-12 13:10:04 +00:00
sbin Fix 10 year old size-of-bcopy bug. 2004-03-13 00:11:05 +00:00
secure Update for 3.8p1, including workaround for a bug in gss-genr.c. 2004-02-26 11:26:46 +00:00
share Capitalize I/O 2004-03-13 00:12:09 +00:00
sys Align the offset in vn_rdwr_inchunks() so that at most the first and 2004-03-13 02:56:27 +00:00
tools - Use variable names instead of numbers for the script arguments to 2004-03-11 18:12:48 +00:00
usr.bin Do not print a warning about net.inet.pim.stats if errno is 2004-03-12 11:22:50 +00:00
usr.sbin Move newsyslog.conf.5 to usr.sbin/newsyslog. There is no real history 2004-03-12 16:03:26 +00:00
COPYRIGHT Update the COPYRIGHT file to include FreeBSD's compilation copyright 2003-12-31 22:35:22 +00:00
installworld_newk Commit the first set of files for changing time_t on freebsd/sparc64 2004-03-03 19:36:20 +00:00
installworld_oldk Commit the first set of files for changing time_t on freebsd/sparc64 2004-03-03 19:36:20 +00:00
MAINTAINERS Update for reality. 2004-03-01 16:34:39 +00:00
Makefile Protect shell expansions. 2004-03-02 14:32:23 +00:00
Makefile.inc1 Hide internal implementation details of UID/GID checks from the user. 2004-03-12 13:24:17 +00:00
README
UPDATING Change time_t from a 32-bit value to a 64-bit value, on FreeBSD/sparc64 2004-03-10 17:39:05 +00:00
UPDATING.64BTT Change time_t from a 32-bit value to a 64-bit value, on FreeBSD/sparc64 2004-03-10 17:39:05 +00:00

This is the top level of the FreeBSD source directory.  This file
was last revised on:
$FreeBSD$

For copyright information, please see the file COPYRIGHT in this
directory (additional copyright information also exists for some
sources in this tree - please see the specific source directories for
more information).

The Makefile in this directory supports a number of targets for
building components (or all) of the FreeBSD source tree, the most
commonly used one being ``world'', which rebuilds and installs
everything in the FreeBSD system from the source tree except the
kernel, the kernel-modules and the contents of /etc.  The
``buildkernel'' and ``installkernel'' targets build and install
the kernel and the modules (see below).  Please see the top of
the Makefile in this directory for more information on the
standard build targets and compile-time flags.

Building a kernel is a somewhat more involved process, documentation
for which can be found at:
   http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html
And in the config(8) man page.
Note: If you want to build and install the kernel with the
``buildkernel'' and ``installkernel'' targets, you might need to build
world before.  More information is available in the handbook.

The sample kernel configuration files reside in the sys/<arch>/conf
sub-directory (assuming that you've installed the kernel sources), the
file named GENERIC being the one used to build your initial installation
kernel.  The file NOTES contains entries and documentation for all possible
devices, not just those commonly used.  It is the successor of the ancient
LINT file, but in contrast to LINT, it is not buildable as a kernel but a
pure reference and documentation file.


Source Roadmap:
---------------
bin		System/user commands.

contrib		Packages contributed by 3rd parties.

crypto		Cryptography stuff (see crypto/README).

etc		Template files for /etc.

games		Amusements.

gnu		Various commands and libraries under the GNU Public License.
		Please see gnu/COPYING* for more information.

include		System include files.

kerberos5	Kerberos5 (Heimdal) package.

lib		System libraries.

libexec		System daemons.

release		Release building Makefile & associated tools.

sbin		System commands.

secure		Cryptographic libraries and commands.

share		Shared resources.

sys		Kernel sources.

tools		Utilities for regression testing and miscellaneous tasks.

usr.bin		User commands.

usr.sbin	System administration commands.


For information on synchronizing your source tree with one or more of
the FreeBSD Project's development branches, please see:

  http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html