List of commands to validate the Boot Time data

  • systemd-analyze


# systemd-analyze

Startup finished in 1.190s (kernel) + 34.874s (userspace) = 36.065s


  • systemd-analyze blame 
    •  This command prints a list of all running units, ordered by the time they took to initialize.



  • systemd-analyze critical-chain
    • This command prints a tree of the time-critical chain of units. The time after the unit is active or started is printed after the "@" character. The time the unit takes to start is printed after the "+" character.
  • systemd-analyze plot > plot.svg
    • This command prints an SVG graphic detailing which system services have been started at what time, highlighting the time they spent on initialization.




  • systemd-bootchart
    By default,systemd-bootchart.service is disabled.In order to start the process,execute the following command
    • systemctl enable systemd-bootchart
    • systemctl start systemd-bootchart

      Systemd-bootchart command collects the CPU utilization, disk load, memory usage, as well as per-process information from a running system. Collected results are output as an SVG graph at /run/log. Systemd-bootchart is available only in  morty version (yocto 2.2)





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