Bug 1143014

FYI there is currently oneshot powertop.service in F21+ (powertop-2.7-1) handling the --auto-tune. It would be nice to have this update in RHEL-7.

There is also powertop2tuned utility in tuned-utils package (currently in RHEL) which can convert powertop tunings into tuned profile. This allows you to selectively enable individual powertop tunings (e.g. not enable USB PM for mouse).

Created attachment 1024287 [details]
Backported fix

QE results: Verified

:::::::::::::::
:: auto-tune ::
:::::::::::::::

[root@intel-wildcatpass-02 ~]# rpm -q powertop
powertop-2.3-9.el7.x86_64

[root@intel-wildcatpass-02 ~]# powertop --help | grep auto
--auto-tune 		 Sets all tunable options to their GOOD setting

[root@intel-wildcatpass-02 ~]# powertop --html
Loaded 0 prior measurements
Preparing to take measurements
Taking 1 measurement(s) for a duration of 20 second(s) each.
PowerTOP outputing using base filename powertop.html

[root@intel-wildcatpass-02 ~]# lynx --dump powertop.html
...
Software Settings in need of Tuning

   Description Script
   Enable SATA link power Managmenet for host0 echo 'min_power' >
   '/sys/class/scsi_host/host0/link_power_management_policy';
   VM writeback timeout echo '1500' >
   '/proc/sys/vm/dirty_writeback_centisecs';
   NMI watchdog should be turned off echo '0' >
   '/proc/sys/kernel/nmi_watchdog';
   Enable SATA link power Managmenet for host4 echo 'min_power' >
   '/sys/class/scsi_host/host4/link_power_management_policy';
   Enable SATA link power Managmenet for host5 echo 'min_power' >
   '/sys/class/scsi_host/host5/link_power_management_policy';
   ...

[root@intel-wildcatpass-02 ~]# powertop --auto-tune
Loaded 0 prior measurements
Leaving PowerTOP

[root@intel-wildcatpass-02 ~]# powertop --html
Loaded 0 prior measurements
Preparing to take measurements
Taking 1 measurement(s) for a duration of 20 second(s) each.
PowerTOP outputing using base filename powertop.html

[root@intel-wildcatpass-02 ~]# lynx --dump powertop.html
...
Optimal Tuned Software Settings

                                 Description
   VM writeback timeout
   Enable SATA link power Managmenet for host4
   Enable SATA link power Managmenet for host5
   Enable SATA link power Managmenet for host3
   Enable SATA link power Managmenet for host1
   NMI watchdog should be turned off
   Enable SATA link power Managmenet for host0
   Enable SATA link power Managmenet for host2
   ...


:::::::::::::::::::::::::
:: systemd integration ::
:::::::::::::::::::::::::

[root@intel-wildcatpass-02 ~]# rpm -ql powertop | grep systemd
/usr/lib/systemd/system/powertop.service

[root@intel-wildcatpass-02 ~]# cat /usr/lib/systemd/system/powertop.service
[Unit]
Description=PowerTOP autotuner

[Service]
Type=oneshot
ExecStart=/usr/sbin/powertop --auto-tune

[Install]
WantedBy=multi-user.target

[root@intel-wildcatpass-02 ~]# systemctl status powertop.service
● powertop.service - PowerTOP autotuner
   Loaded: loaded (/usr/lib/systemd/system/powertop.service; disabled; vendor preset: disabled)
   Active: inactive (dead)

[root@intel-wildcatpass-02 ~]# systemctl enable powertop.service
Created symlink from /etc/systemd/system/multi-user.target.wants/powertop.service to /usr/lib/systemd/system/powertop.service.

[root@intel-wildcatpass-02 ~]# reboot
...
...
...

[root@intel-wildcatpass-02 ~]# uptime
 18:03:55 up 0 min,  1 user,  load average: 0.12, 0.03, 0.01

[root@intel-wildcatpass-02 ~]# systemctl status -l powertop.service
● powertop.service - PowerTOP autotuner
   Loaded: loaded (/usr/lib/systemd/system/powertop.service; enabled; vendor preset: disabled)
   Active: inactive (dead) since Mon 2015-08-17 18:03:38 EDT; 34s ago
  Process: 1818 ExecStart=/usr/sbin/powertop --auto-tune (code=exited, status=0/SUCCESS)
 Main PID: 1818 (code=exited, status=0/SUCCESS)

Aug 17 18:03:34 intel-wildcatpass-02.lab.eng.rdu.redhat.com systemd[1]: Starting PowerTOP autotuner...
Aug 17 18:03:34 intel-wildcatpass-02.lab.eng.rdu.redhat.com powertop[1818]: Loaded 0 prior measurements
Aug 17 18:03:38 intel-wildcatpass-02.lab.eng.rdu.redhat.com powertop[1818]: Leaving PowerTOP
Aug 17 18:03:38 intel-wildcatpass-02.lab.eng.rdu.redhat.com systemd[1]: Started PowerTOP autotuner.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2225.html