Anyone completed the exercise? [LWN.net]

Anyone completed the exercise?

Posted Apr 15, 2010 6:08 UTC (Thu) by nikanth (guest, #50093)
Parent article: The case of the overly anonymous anon_vma

the diagram for the 1000-child scenario which motivated this patch will be left as an exercise for the reader.
Has anyone completed the exercise. ;-)
Probably it shouldn't be daunting using the right tool + script. Even a video may be possible. :)

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Anyone completed the exercise?

Posted Apr 16, 2010 4:27 UTC (Fri) by pjm (subscriber, #2080) [Link]

I think the point is just that standard tools like to avoid nodes overlapping each other, so if you have a million nodes on screen then each node must occupy only about 1 pixel, and you wouldn't be able to get any information about the problem other than a million sure is a big number, isn't it?. But it wasn't really a serious suggestion for understanding the bug, which could be illustrated with just one or two child processes.

(I was hoping to be able to point people to a certain impressive tool I've seen for interactively exploring large graphs, but I see that the code isn't yet publicly available. However, it's expected to be redeveloped and GPL'd in a year or two, under the name Dunnart.)