reported timestamps during boot process?

Michael Grimm trashcan at
Sat Mar 12 08:18:38 UTC 2016

Erich Dollansky <erichsfreebsdlist at> wrote:
> Michael Grimm <trashcan at> wrote:

>> Is there a way to investigate the boot process by means of reported
>> timestamps in some logfile? dmesg doesn't seem to be the tool of
>> choice.

> you might find some hints in /var/log/messages.

Nope. It looks to me [1] that, whilst booting, kernel messages are written to that file in one batch after syslogd has been fired up. Timestamps of those messages are all showing the very same second.

Linux' dmesg has such a feature [2] I am looking for:

|	-d, --show-delta
|		Display the timestamp and the time delta spent between
|		messages.  If used together with —notimee then only the time
|		delta without the timestamp is printed.


[1] is that correct?

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