Provided by: tuned_2.15.0-1_all 
NAME
tuned-profiles - description of basic tuned profiles
DESCRIPTION
These are the base profiles which are mostly shipped in the base tuned package. They are
targeted to various goals. Mostly they provide performance optimizations but there are
also profiles targeted to low power consumption, low latency and others. You can mostly
deduce the purpose of the profile by its name or you can see full description below.
The profiles are stored in subdirectories below /usr/lib/tuned. If you need to customize
the profiles, you can copy them to /etc/tuned and modify them as you need. When loading
profiles with the same name, the /etc/tuned takes precedence. In such case you will not
lose your customized profiles between tuned updates.
The power saving profiles contain settings that are typically not enabled by default as
they will noticeably impact the latency/performance of your system as opposed to the power
saving mechanisms that are enabled by default. On the other hand the performance profiles
disable the additional power saving mechanisms of tuned as they would negatively impact
throughput or latency.
PROFILES
At the moment we're providing the following pre-defined profiles:
balanced
It is the default profile. It provides balanced power saving and performance. At
the moment it enables CPU and disk plugins of tuned and it makes sure the
conservative governor is active (if supported by the current cpufreq driver). It
enables ALPM power saving for SATA host adapters and sets the link power management
policy to medium_power. It also sets the CPU energy performance bias to normal. It
also enables AC97 audio power saving or (it depends on your system) HDA-Intel power
savings with 10 seconds timeout. In case your system contains supported Radeon
graphics card (with enabled KMS) it configures it to automatic power saving.
powersave
Maximal power saving, at the moment it enables USB autosuspend (in case environment
variable USB_AUTOSUSPEND is set to 1), enables ALPM power saving for SATA host
adapters and sets the link power management policy to min_power. It also enables
WiFi power saving and makes sure the ondemand governor is active (if supported by
the current cpufreq driver). It sets the CPU energy performance bias to powersave.
It also enables AC97 audio power saving or (it depends on your system) HDA-Intel
power savings (with 10 seconds timeout). In case your system contains supported
Radeon graphics card (with enabled KMS) it configures it to automatic power saving.
On Asus Eee PCs dynamic Super Hybrid Engine is enabled.
throughput-performance
Profile for typical throughput performance tuning. Disables power saving mechanisms
and enables sysctl settings that improve the throughput performance of your disk
and network IO. CPU governor is set to performance and CPU energy performance bias
is set to performance. Disk readahead values are increased.
accelerator-performance
This profile contains the same tuning as the throughput-performance profile.
Additionally, it locks the CPU to low C states so that the latency is less than
100us. This improves the performance of certain accelerators, such as GPUs.
latency-performance
Profile for low latency performance tuning. Disables power saving mechanisms. CPU
governor is set to performance and locked to the low C states (by PM QoS). CPU
energy performance bias to performance.
network-throughput
Profile for throughput network tuning. It is based on the throughput-performance
profile. It additionally increases kernel network buffers.
network-latency
Profile for low latency network tuning. It is based on the latency-performance
profile. It additionally disables transparent hugepages, NUMA balancing and tunes
several other network related sysctl parameters.
desktop
Profile optimized for desktops based on balanced profile. It additionally enables
scheduler autogroups for better response of interactive applications.
hpc-compute
Profile optimized for high-performance computing. It is based on the
latency-performance profile.
virtual-guest
Profile optimized for virtual guests based on throughput-performance profile. It
additionally decreases virtual memory swappiness and increases dirty_ratio
settings.
virtual-host
Profile optimized for virtual hosts based on throughput-performance profile. It
additionally enables more aggressive writeback of dirty pages.
intel-sst
Profile optimized for systems with user-defined Intel Speed Select Technology
configurations. This profile is intended to be used as an overlay on other profiles
(e.g. cpu-partitioning profile), example: tuned-adm profile cpu-partitioning
intel-sst
optimize-serial-console
Profile which tunes down I/O activity to the serial console by reducing the printk
value. This should make the serial console more responsive. This profile is
intended to be used as an overlay on other profiles (e.g. throughput-performance
profile), example: tuned-adm profile throughput-performance optimize-serial-console
FILES
/etc/tuned/*
/usr/lib/tuned/*
SEE ALSO
tuned(8) tuned-adm(8) tuned-profiles-atomic(7) tuned-profiles-sap(7) tuned-profiles-sap-
hana(7) tuned-profiles-oracle(7) tuned-profiles-realtime(7) tuned-profiles-nfv-host(7)
tuned-profiles-nfv-guest(7) tuned-profiles-cpu-partitioning(7) tuned-profiles-compat(7)
tuned-profiles-postgresql(7)
AUTHOR
Jaroslav Škarvada <jskarvad@redhat.com>
Jan Kaluža <jkaluza@redhat.com>
Jan Včelák <jvcelak@redhat.com>
Marcela Mašláňová <mmaslano@redhat.com>
Phil Knirsch <pknirsch@redhat.com>