freebsd with flexible iflib nic queues
Go to file
Pawel Jakub Dawidek 1698a6aec9 Dramatically optimize listing snapshots when user requests only snapshot
names and wants to sort them by name, ie. when executes:

	# zfs list -t snapshot -o name -s name

Because only name is needed we don't have to read all snapshot properties.

Below you can find how long does it take to list 34509 snapshots from a single
disk pool before and after this change with cold and warm cache:

before:

	# time zfs list -t snapshot -o name -s name > /dev/null
	cold cache: 525s
	warm cache: 218s

after:

	# time zfs list -t snapshot -o name -s name > /dev/null
	cold cache: 1.7s
	warm cache: 1.1s

MFC after:	1 week
2012-01-21 21:12:53 +00:00
bin sh: Remove "kill" example function, which is superseded by the kill builtin 2012-01-21 20:39:17 +00:00
cddl Dramatically optimize listing snapshots when user requests only snapshot 2012-01-21 21:12:53 +00:00
contrib Pull in r148240 from upstream llvm trunk: 2012-01-20 19:18:11 +00:00
crypto Fix a problem whereby a corrupt DNS record can cause named to crash. [11:06] 2011-12-23 15:00:37 +00:00
etc When creating the jails /dev/log symlink, do it by full path to avoid 2012-01-20 22:55:19 +00:00
games Reencode morse.c to UTF-8. This does not make it Unicode aware. 2012-01-15 13:23:01 +00:00
gnu Adopt to new layout of struct pcb. 2012-01-21 17:50:14 +00:00
include Only use the static assertion when __generic is available. 2012-01-17 20:22:10 +00:00
kerberos5 Don't support OpenLDAP during lib32 build. 2011-12-06 12:03:01 +00:00
lib Use getcontextx(3) internal API instead of getcontext(2) to provide 2012-01-21 18:06:18 +00:00
libexec Remove unneeded dtv variable. 2012-01-17 21:55:20 +00:00
release Add support for the Em command. This restores a missing 'not' in the 2012-01-19 17:29:54 +00:00
rescue -lreadline is not required anymore. 2011-11-29 03:27:09 +00:00
sbin Fix minor memory leak. 2012-01-21 20:13:37 +00:00
secure Force linker error when created shared library contains a relocation 2011-12-06 11:28:17 +00:00
share Reflect tunable name change made in r230337. 2012-01-19 20:31:29 +00:00
sys Dramatically optimize listing snapshots when user requests only snapshot 2012-01-21 21:12:53 +00:00
tools These tests check whether the compiler evaluates floating-point 2012-01-20 06:57:21 +00:00
usr.bin Map foreign architecture names to FreeBSD naming convention. 2012-01-20 18:55:56 +00:00
usr.sbin Fix warning when compiling with gcc46: 2012-01-20 01:39:26 +00:00
COPYRIGHT Happy 2012 to FreeBSD users in Samoa. 2011-12-31 04:38:04 +00:00
LOCKS
MAINTAINERS Farewall, sysinstall! You served us well for many years, but 10.0 is one 2011-10-03 15:13:09 +00:00
Makefile Replace 'chflags' with 'file flags' in a comment, since 'chflags' 2011-11-20 20:05:47 +00:00
Makefile.inc1 Restore functionality to pack several kernels into release. All 2012-01-15 08:36:25 +00:00
Makefile.mips Retire TARGET_ABI. 2011-01-07 20:26:33 +00:00
ObsoleteFiles.inc Remove wtmpcvt(1). 2012-01-13 15:40:49 +00:00
README
UPDATING For the mass rc.d changes, add a command line to make the update easier 2012-01-14 23:19:10 +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 ``world''
target should only be used in cases where the source tree has not
changed from the currently running version.  See:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html
for more information, including setting make(1) variables.

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.

cddl		Various commands and libraries under the Common Development
		and Distribution License.

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.

rescue		Build system for statically linked /rescue utilities.

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