| BOOTCHART.CONF(5) - phpMan
BOOTCHART.CONF(5) bootchart.conf BOOTCHART.CONF(5)
NAME
bootchart.conf - Boot performance analysis graphing tool configuration file
SYNOPSIS
/etc/systemd/bootchart.conf
DESCRIPTION
When starting, systemd-bootchart will read the configuration file bootchart.conf. This
configuration file determines logging parameters and graph output.
OPTIONS
Samples=500
Configure the amount of samples to record in total before bootchart exits. Each sample
will record at intervals defined by Frequency=.
Frequency=25
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.
Relative=no
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 time=0.0.
Filter=no
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.
Output=[path]
Configures the output directory for writing the graphs. By default, bootchart writes
the graphs to /run/log.
Init=[path]
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
init=/lib/systemd/systemd-bootchart.
PlotMemoryUsage=no
If set to yes, enables logging and graphing of processes' PSS memory consumption.
PlotEntropyGraph=no
If set to yes, enables logging and graphing of the kernel random entropy pool size.
ScaleX=100
Horizontal scaling factor for all variable graph components.
ScaleY=20
Vertical scaling factor for all variable graph components.
ControlGroup=no
Display process control group.
SEE ALSO
systemd-bootchart(1), systemd.directives(7)
systemd 215 BOOTCHART.CONF(5)
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