schedgraph.py

[Julian Elischer]

Jeff Roberson wrote:
> I took a break from working on VFS to implement a tool that will help me
> further refine the ULE scheduler.  This may also be interesting in
> understanding application behavior under load, analyzing lock contention
> and preemption in the kernel, etc.
>
[...]

robert watson has been doing some work in a similar (but not as detailed)
vein.  he has some code that produces some quite nice graphs
of threads and cpus using KTR.