09-30-2011
.profile is a shell script, shell scripts don't run in perl.
Creating a shell inside perl to run .profile in is pointless, environment variables don't work that way. The script and anything the script runs would get the vars, but perl wouldn't. Children get copies of your environment, parents don't get environment variables from children.
You should source .profile in a shell, and have that shell run the perl script. The perl script will inherit the vars from it.
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LEARN ABOUT CENTOS
tuned.conf
tuned.conf(5) tuned.conf file format description tuned.conf(5)
NAME
tuned.conf - Tuned profile definition
DESCRIPTION
This man page documents format of Tuned 2.0 profile definition files. Profile is stored in /etc/tuned/<profile_name>/tuned.conf or in
/usr/lib/tuned/<profile_name>/tuned.conf file where the /etc/tuned/ directory has higher priority.
The tuned.conf configures the profile and it is in ini-file format.
MAIN SECTION
The main section is called "[main]" and can contain following options:
include=
Includes config file defined as value. Config file can be defined as full path or by the profile name to which it belongs. If this
parameter is present, the histogram will be shown at the end of the measurement.
PLUGINS
Every other section defines one plugin. The name of the section is used as name for the plugin and is used in logs to identify the plugin.
There can be only one plugin of particular type tuning particular device. Conflicts are by default fixed by merging the options of both
plugins together. This can be changed by "replace" option.
Every plugin section can contain following sections:
type= Plugin type. Currently there are following plugins: disk, script, net, cpu, eeepc_she.
devices=
Comma separated list of devices which should be tuned by this plugin instance. If you omit this option, all found devices will be
tuned.
replace=1
If there is conflict between two plugins (meaning two plugins of the same type are trying to configure the same devices), then the
plugin defined as last replaces all options defined by the previosly defined plugin.
Plugins can also have plugin related options.
EXAMPLE
[main]
# Includes plugins defined in "included" profile.
include=included
# Define my_sysctl plugin
[my_sysctl]
type=sysctl
# This plugin will replace any sysctl plugin defined in "included" profile
replace=1
# 256 KB default performs well experimentally.
net.core.rmem_default = 262144
net.core.wmem_default = 262144
# Define my_script plugin
# Both scripts (profile.sh from this profile and script from "included"
# profile) will be run, because if there is no "replace=1" option the
# default action is merge.
[my_script]
type=script
script=profile.sh
SEE ALSO
tuned(8)
AUTHOR
Written by Jan Kaluza <jkaluza@redhat.com>.
REPORTING BUGS
Report bugs to <jkaluza@redhat.com>.
Jan Kaluza 13 Mar 2012 tuned.conf(5)