Difference in wainting time between update of base/doc/ports tree

[Adam Vande More]

On Sun, Jan 28, 2018 at 2:07 AM, Yasuhiro KIMURA <yasu at utahime.org> wrote:

> From: Adam Vande More <amvandemore at gmail.com>
> Subject: Re: Difference in wainting time between update of base/doc/ports
> tree
> Date: Sat, 27 Jan 2018 18:15:45 -0600
>
> > It is most likely due to IO.  There are tools to profile processes if you
> > want empirical verification.
>
> I would like to know why this happens. So would you please tell me
> what tools can be used to investigate it? FreeBSD version of my box is
> 11.1-RELEASE amd64.
>

pcmstat or dtrace might be a good starting place. Then you can use
something like

https://github.com/brendangregg/FlameGraph

to produce a more visual output if desired.

-- 
Adam