1TUNED_PROFILES(7) tuned TUNED_PROFILES(7)
2
6 tuned-profiles - description of basic tuned profiles
7
10 These are the base profiles which are mostly shipped in the base tuned
11 package. They are targeted to various goals. Mostly they provide per‐
12 formance optimizations but there are also profiles targeted to low
13 power consumption, low latency and others. You can mostly deduce the
14 purpose of the profile by its name or you can see full description
15 below.
16 The profiles are stored in subdirectories below /usr/lib/tuned. If you
18 need to customize the profiles, you can copy them to /etc/tuned and
19 modify them as you need. When loading profiles with the same name, the
20 /etc/tuned takes precedence. In such case you will not lose your cus‐
21 tomized profiles between tuned updates.
22 The power saving profiles contain settings that are typically not
24 enabled by default as they will noticeably impact the latency/perfor‐
25 mance of your system as opposed to the power saving mechanisms that are
26 enabled by default. On the other hand the performance profiles disable
27 the additional power saving mechanisms of tuned as they would nega‐
28 tively impact throughput or latency.
29
32 At the moment we're providing the following pre-defined profiles:
33 balanced
36 It is the default profile. It provides balanced power saving and
37 performance. At the moment it enables CPU and disk plugins of
38 tuned and it makes sure the conservative governor is active (if
39 supported by the current cpufreq driver). It enables ALPM power
40 saving for SATA host adapters and sets the link power management
41 policy to medium_power. It also sets the CPU energy performance
42 bias to normal. It also enables AC97 audio power saving or (it
43 depends on your system) HDA-Intel power savings with 10 seconds
44 timeout. In case your system contains supported Radeon graphics
45 card (with enabled KMS) it configures it to automatic power sav‐
46 ing.
47 powersave
50 Maximal power saving, at the moment it enables USB autosuspend
51 (in case environment variable USB_AUTOSUSPEND is set to 1),
52 enables ALPM power saving for SATA host adapters and sets the
53 link power management policy to min_power. It also enables WiFi
54 power saving and makes sure the ondemand governor is active (if
55 supported by the current cpufreq driver). It sets the CPU energy
56 performance bias to powersave. It also enables AC97 audio power
57 saving or (it depends on your system) HDA-Intel power savings
58 (with 10 seconds timeout). In case your system contains sup‐
59 ported Radeon graphics card (with enabled KMS) it configures it
60 to automatic power saving. On Asus Eee PCs dynamic Super Hybrid
61 Engine is enabled.
62 throughput-performance
65 Profile for typical throughput performance tuning. Disables
66 power saving mechanisms and enables sysctl settings that improve
67 the throughput performance of your disk and network IO. CPU gov‐
68 ernor is set to performance and CPU energy performance bias is
69 set to performance. Disk readahead values are increased.
70 latency-performance
73 Profile for low latency performance tuning. Disables power sav‐
74 ing mechanisms. CPU governor is set to performance and locked
75 to the low C states (by PM QoS). CPU energy performance bias to
76 performance.
77 network-throughput
80 Profile for throughput network tuning. It is based on the
81 throughput-performance profile. It additionally increases kernel
82 network buffers.
83 network-latency
86 Profile for low latency network tuning. It is based on the
87 latency-performance profile. It additionally disables transpar‐
88 ent hugepages, NUMA balancing and tunes several other network
89 related sysctl parameters.
90 desktop
93 Profile optimized for desktops based on balanced profile. It
94 additionally enables scheduler autogroups for better response of
95 interactive applications.
96 virtual-guest
99 Profile optimized for virtual guests based on throughput-perfor‐
100 mance profile. It additionally decreases virtual memory swappi‐
101 ness and increases dirty_ratio settings.
102 virtual-host
105 Profile optimized for virtual hosts based on throughput-perfor‐
106 mance profile. It additionally enables more aggressive write‐
107 back of dirty pages.
108
111 /etc/tuned/*
112 /usr/lib/tuned/*
113
116 tuned(8) tuned-adm(8) tuned-profiles-atomic(7) tuned-profiles-sap(7)
117 tuned-profiles-sap-hana(7) tuned-profiles-oracle(7) tuned-pro‐
118 files-realtime(7) tuned-profiles-nfv-host(7) tuned-pro‐
119 files-nfv-guest(7) tuned-profiles-cpu-partitioning(7) tuned-pro‐
120 files-compat(7)
121
123 Jaroslav Škarvada <jskarvad@redhat.com>
124 Jan Kaluža <jkaluza@redhat.com>
125 Jan Včelák <jvcelak@redhat.com>
126 Marcela Mašláňová <mmaslano@redhat.com>
127 Phil Knirsch <pknirsch@redhat.com>
128Fedora Power Management SIG 30 Mar 2017 TUNED_PROFILES(7)