tslog
is a boot-time event tracing facility.
It is suitable for tracing recursive events
based on function entries and exits.
Its purpose is to ease pinpointing and reducing the overall
FreeBSD
boot time by generating detailed timing information.
tslog
is able to trace the boot loader, kernel initialization, and userland processes.
In userland, it records the following details for each process ID:
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The timestamp of the
fork(2)
which creates the given process ID and the parent process ID.
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The path passed to
execve(2),
if any.
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The first path resolved by
namei(9),
if any.
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The timestamp of the
exit(3)
which terminates the process.
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