tuned-admコマンドでLinuxのパフォーマンスプロファイルを切り替える方法｜throughput・latency・virtual-guestの使い分け

この記事のポイント

・tuned-adm profileコマンド1行でパフォーマンスプロファイルを切り替えられる
・スループット重視はthroughput-performance、レイテンシ重視はlatency-performance
・仮想マシン内ではvirtual-guestを選ばないと逆にパフォーマンスが低下することがある
・tuned-adm verifyで設定が実際に適用されているかを確認できる

# check tuned service status
$ systemctl status tuned
* tuned.service - Dynamic System Tuning Daemon
     Loaded: loaded (/usr/lib/systemd/system/tuned.service; enabled; preset: enabled)
     Active: active (running) since Mon 2026-08-05 09:00:14 JST; 2h 15min ago
       Docs: man:tuned(8)
   Main PID: 1012 (tuned)
      Tasks: 4 (limit: 22901)
     Memory: 13.2M
     CGroup: /system.slice/tuned.service
             └─1012 /usr/bin/python3 -Es /usr/sbin/tuned -l -P

# enable and start tuned (also persists after reboot)
$ sudo systemctl enable --now tuned
Created symlink /etc/systemd/system/multi-user.target.wants/tuned.service ...

$ tuned-adm active
Current active profile: balanced

$ tuned-adm list
Available profiles:
- accelerator-performance     - Throughput performance based tuning with disabled
                                higher latency STOP states
- balanced                    - General non-specialized tuned profile
- desktop                     - Optimize for the desktop use case
- hpc-compute                 - Optimize for HPC compute workloads
- latency-performance         - Optimize for deterministic performance at the
                                cost of increased power consumption
- network-latency             - Optimize for deterministic performance at the
                                cost of increased power consumption, focused on
                                low latency network performance
- network-throughput          - Optimize for streaming network throughput,
                                generally only necessary on older CPUs or 10G+
                                networks
- powersave                   - Spin down storage devices, lower wakeups
- throughput-performance      - Broadly applicable tuning that provides excellent
                                performance across a variety of common server
                                workloads
- virtual-guest               - Optimize for running inside a virtual guest.
- virtual-host                - Optimize for running KVM guests
Current active profile: balanced

$ sudo tuned-adm profile throughput-performance
$ tuned-adm active
Current active profile: throughput-performance

$ tuned-adm recommend
throughput-performance

$ sudo tuned-adm profile throughput-performance
$ tuned-adm active
Current active profile: throughput-performance

$ sudo tuned-adm profile latency-performance
$ tuned-adm active
Current active profile: latency-performance

$ sudo tuned-adm profile virtual-guest
$ tuned-adm active
Current active profile: virtual-guest

$ tuned-adm active
Cannot talk to tuned daemon!

# start and enable tuned service
$ sudo systemctl start tuned
$ sudo systemctl enable tuned
$ tuned-adm active
Current active profile: throughput-performance

$ sudo tuned-adm verify
Verification succeeded, current settings match the preset profile.

# check transparent hugepage setting
$ cat /sys/kernel/mm/transparent_hugepage/enabled
always [madvise] never
# 角括弧[]が現在の設定。madviseはvirtual-guestプロファイルが適用されている状態

$ systemctl is-enabled tuned
disabled

$ sudo systemctl enable tuned
Created symlink /etc/systemd/system/multi-user.target.wants/tuned.service ...

# install tuned and additional profiles (RHEL/Rocky Linux/AlmaLinux)
$ sudo dnf install tuned tuned-profiles-cpu-partitioning

# restart tuned after installation
$ sudo systemctl restart tuned
$ tuned-adm list