bootchart.conf — Boot performance analysis graphing tool configuration file
When starting, systemd-bootchart will read the
This configuration file determines logging parameters and
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 time=0.0.
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
Configures bootchart to run a non-standard
binary instead of
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 memory consumption.
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.