最後更新: 2017-08-07

介紹

tuned is a daemon that monitors the use of system components and

dynamically tunes system settings based on that monitoring information.

Program: python

目錄

• Configure
• Cmd
• Profile
• ktune

Configure

Config file

/etc/tuned/tuned-main.conf

Running Process

/usr/bin/python -Es /usr/sbin/tuned -l -P

# Disable tuned Service

# C7

systemctl disable tuned

systemctl stop tuned

# C6

chkconfig tuned off

service tuned stop

Cmd

list profiles

tuned-adm list

Available profiles:
- balanced
- desktop
- latency-performance
- network-latency
- network-throughput
- powersave
- throughput-performance
- virtual-guest
- virtual-host

Current active profile

tuned-adm active

Switching profile

# "balanced" profile

tuned-adm profile balanced

To disable all tuning

tuned-adm off

Profile

virtual-guest

 * based on the enterprise-storage profile
 + decreases the swappiness of virtual memory

virtual-host

 * Based on the enterprise-storage profile
 + decreases the swappiness of virtual memory
 + enables more aggressive writeback of dirty pages.
 + Non-root and non-boot file systems are mounted with barrier=0

ktune

Ｉntroduced in Red Hat Enterprise Linux 5.3 as a framework and

service to optimize the performance of a machine for a specific use cases.

Please have a look at /etc/sysconfig/ktune and /etc/sysctl.ktune for tuning parameters.