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Anton Aksola e29a8e0537 iproute2: build nsid-name cache only for commands that need it
The calling of netns_map_init() before command parsing introduced
a performance issue with large number of namespaces.

As commands such as add, del and exec do not need to iterate through
/var/run/netns it would be good not no build the cache before executing
these commands.

Example:
unpatched:
time seq 1 1000 | xargs -n 1 ip netns add

real    0m16.832s
user    0m1.350s
sys    0m15.029s

patched:
time seq 1 1000 | xargs -n 1 ip netns add

real    0m3.859s
user    0m0.132s
sys    0m3.205s

Signed-off-by: Anton Aksola <aakso@iki.fi>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
2016-10-09 18:56:47 -07:00
bash-completion tc: add bash-completion function 2016-05-03 09:53:26 -07:00
bridge Merge branch 'master' into net-next 2016-10-09 18:53:52 -07:00
devlink devlink: whitespace cleanup 2016-08-29 11:17:38 -07:00
doc doc/tc-filters.tex: Drop overly subjective paragraphs 2016-03-27 10:34:40 -07:00
etc/iproute2 {f, m}_bpf: allow for user-defined object pinnings 2015-11-29 11:55:16 -08:00
examples tc, bpf: add support for map pre/allocation 2016-04-11 21:54:47 +00:00
genl Replace malloc && memset by calloc 2016-07-20 12:05:24 -07:00
include update headers from pre 4.9 (net-next) 2016-10-09 18:55:58 -07:00
ip iproute2: build nsid-name cache only for commands that need it 2016-10-09 18:56:47 -07:00
lib Merge branch 'master' into net-next 2016-10-09 18:53:52 -07:00
man tipc: update man page for link monitor 2016-09-20 09:13:09 -07:00
misc misc/ss: tcp cwnd should be unsigned 2016-09-22 16:38:22 -07:00
netem scrub out whitespace issues 2016-03-27 10:50:14 -07:00
schema bridge: add json schema for bridge fdb show 2016-07-20 12:02:02 -07:00
tc Merge branch 'master' into net-next 2016-10-09 18:53:52 -07:00
testsuite iproute2: build nsid-name cache only for commands that need it 2016-10-09 18:56:47 -07:00
tipc tipc: cleanup style issues 2016-09-20 09:25:42 -07:00
.gitignore gitignore: Ignore 'tags' file generated by ctags 2016-09-08 14:30:44 -07:00
COPYING Update address of FSF in license 2008-03-08 13:31:03 -08:00
Makefile Makefile: Allow to override CC 2016-07-20 12:05:24 -07:00
README README: update mail address and download location 2013-01-18 09:54:58 -08:00
README.decnet Decnet documentation update 2005-06-13 18:47:56 +00:00
README.devel iproute2: fix minor typo in comments 2011-07-11 10:11:09 -07:00
README.distribution README cleanup's 2012-01-03 15:04:55 -08:00
README.iproute2+tc tc, bpf: finalize eBPF support for cls and act front-end 2015-04-10 13:31:19 -07:00
README.lnstat Rename: misc/README.lnstat -> README.lnstat 2004-10-19 20:24:47 +00:00
configure Make builds default to quiet mode 2016-05-31 12:13:07 -07:00

README

This is a set of utilities for Linux networking.

Information:
    http://www.linuxfoundation.org/collaborate/workgroups/networking/iproute2

Download:
    http://www.kernel.org/pub/linux/utils/net/iproute2/

Repository:
    git://git.kernel.org/pub/scm/linux/kernel/git/shemminger/iproute2.git

How to compile this.
--------------------
1. libdbm

arpd needs to have the db4 development libraries. For Debian
users this is the package with a name like libdb4.x-dev.
DBM_INCLUDE points to the directory with db_185.h which
is the include file used by arpd to get to the old format Berkeley
database routines.  Often this is in the db-devel package.

2. make

The makefile will automatically build a Config file which
contains whether or not ATM is available, etc.

3. To make documentation, cd to doc/ directory , then
   look at start of Makefile and set correct values for
   PAGESIZE=a4		, ie: a4 , letter ...	(string)
   PAGESPERPAGE=2	, ie: 1 , 2 ...		(numeric)
   and make there. It assumes, that latex, dvips and psnup
   are in your path.

4. This package includes matching sanitized kernel headers because
   the build environment may not have up to date versions. See Makefile
   if you have special requirements and need to point at different
   kernel include files.

Stephen Hemminger
stephen@networkplumber.org

Alexey Kuznetsov
kuznet@ms2.inr.ac.ru