BOOTCHART.CONF(5)bootchart.confBOOTCHART.CONF(5)NAMEbootchart.conf - Boot performance analysis graphing tool configuration
When starting, systemd-bootchart will read the configuration file
bootchart.conf. This configuration file determines logging parameters
and graph output.
Configure the amount of samples to record in total before bootchart
exits. Each sample will record at intervals defined by Frequency=.
Configure the sample log frequency. This can be a fractional
number, but must be larger than 0.0. Most systems can cope with
values under 25-50 without impacting boot time severely.
Configures whether the left axis of the output graph equals
time=0.0 (CLOCK_MONOTONIC start). This is useful for using
bootchart at post-boot time to profile an already booted system,
otherwise the graph would become extremely large. If set to yes,
the horizontal axis starts at the first recorded sample instead of
Configures whether the resulting graph should omit tasks that did
not contribute significantly to the boot. Processes that are too
short-lived (only seen in one sample) or that do not consume any
significant CPU time (less than 0.001sec) will not be displayed in
the output graph.
Configures the output directory for writing the graphs. By default,
bootchart writes the graphs to /run/log.
Configures bootchart to run a non-standard binary instead of
/sbin/init. This option is only relevant if bootchart was invoked
from the kernel command line with
If set to yes, enables logging and graphing of processes' PSS
If set to yes, enables logging and graphing of the kernel random
entropy pool size.
Horizontal scaling factor for all variable graph components.
Vertical scaling factor for all variable graph components.
SEE ALSOsystemd-bootchart(1), systemd.directives(7)systemd 208BOOTCHART.CONF(5)