I'm trying to enable sysstat to take temperature readings, so that I have past temperature information to diagnose host failures in the future.

I tried this command to get temperature information:

$ sar -m TEMP
Requested activities not available in file /var/log/sysstat/sa22

Here's what the sar man page has to say about this:

-m { keyword [,...] | ALL }
       Report power management statistics.  Note that these statistics depend on sadc's option "-S  POWER"  to
       be collected.

       Possible keywords are CPU, FAN, FREQ, IN, TEMP and USB.


       With  the  TEMP  keyword,  statistics about devices temperature are reported.  The following values are

According to this, power management information (which temperature is a subset of) is not logged by default. So, I changed the file /etc/sysstat/sysstat to enable it. I changed this:

# Parameters for the system activity data collector (see sadc(8) manual page)
# which are used for the generation of log files.
# By default contains the `-S DISK' option responsible for generating disk
# statisitcs. Use `-S XALL' to collect all available statistics.

into this:


Another issue on the sysstat issue tracker said that sysstat requires lm-sensors to function, so I installed that package too. Here's the output of sensors:

$ sensors
Adapter: ACPI interface
temp1:        +27.8°C  (crit = +119.0°C)
temp2:        +29.8°C  (crit = +119.0°C)

Adapter: ISA adapter
Package id 0:  +89.0°C  (high = +82.0°C, crit = +100.0°C)
Core 0:        +86.0°C  (high = +82.0°C, crit = +100.0°C)
Core 1:        +88.0°C  (high = +82.0°C, crit = +100.0°C)
Core 2:        +89.0°C  (high = +82.0°C, crit = +100.0°C)
Core 3:        +89.0°C  (high = +82.0°C, crit = +100.0°C)
Core 4:        +88.0°C  (high = +82.0°C, crit = +100.0°C)
Core 5:        +87.0°C  (high = +82.0°C, crit = +100.0°C)

Adapter: PCI adapter
Composite:    +38.9°C  (low  = -273.1°C, high = +84.8°C)
                       (crit = +84.8°C)
Sensor 1:     +38.9°C  (low  = -273.1°C, high = +65261.8°C)
Sensor 2:     +37.9°C  (low  = -273.1°C, high = +65261.8°C)

So this does seem to correctly detect my temperature sensors.

I also tried waiting ten minutes for another collection to happen. (My system is configured to log every ten minutes, at :05, :15, :25, etc.)

Unfortunately, after all that, I still get the same error:

$ sar -m TEMP
Requested activities not available in file /var/log/sysstat/sa22

1 Answer 1


I managed to get this working, through three steps:

  1. Do all of the setup in the question above.

  2. Remove the sysstat log file for the day.

    root@host:~# sar -m TEMP
    Requested activities not available in file /var/log/sysstat/sa30
    root@host:~# rm /var/log/sysstat/sa30
  3. Run the script /usr/lib/sysstat/debian-sa1 1 1 (may be different on non Debian/Ubuntu systems)

After this, running sar -m TEMP works.

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