Hi folks,
I've been pushing a PR to introduce a tool that is able to render a fio
script file as a graphviz graph.
That's first release, it works pretty well, feedback welcome.
If you want to see a sample output :
https://raw.githubusercontent.com/axboe/fio/d61215e076fe3b51c0ed92dd985101b84bbcd757/examples/e4defrag2.png
https://github.com/axboe/fio/pull/1240
|----- Reading a fio file can be sometimes tricky when : - you have lots
of jobs - jobs override some options - jobs have dependencies
Understanding which jobs are running at the same time, which one waits
for which is sometimes difficult and could easily lead to mistakes. It's
pretty common to find jobs where people think jobs are sequential while
some run in parallel. For ease the understanding of the scheduling and
what's the configuration status (local + global variables), this tool
will use some graphical helpers to enlighten things. The configuration
file can be used to adjust the rendering but by default : - jobs are
defined in a blue rounded box - jobs running at the same time are inside
the same gray background - time & size variables are shown as a self
arrow - dependencies between jobs are shown by up->down black arrows -
specific engines options are written in blue (top of the job box) -
standard options are printed in green (bottom of the job box) - pre/post
actions are printed in red (head/tail of the job box) - numjobs is
replaced by a 'x' multiplicator on the job name Several output formats
can be defined via --format : list can be found here
https://graphviz.org/docs/outputs/ if --view option is used, the
rendered file will be immediately shown. if --keep is used, the grapvhiz
file will be kept. This commit also adds the rendering of the examples
jobs. If a newcomer gets into the repository, they can immediately
better understand what the jobs do.|
Erwan,
