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other versions
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- jessie 215-17+deb8u7
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BOOTCHART.CONF(5) | bootchart.conf | BOOTCHART.CONF(5) |
NAME¶
bootchart.conf - Boot performance analysis graphing tool configuration fileSYNOPSIS¶
/etc/systemd/bootchart.confDESCRIPTION¶
When starting, systemd-bootchart will read the configuration file bootchart.conf. This configuration file determines logging parameters and graph output.OPTIONS¶
Samples=500Configure the amount of samples to record
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 folder 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=/usr/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.
SEE ALSO¶
systemd 204 |