Intermittent system hangs on 7.2-RELEASE-p1

[Linda Messerschmidt]

On Fri, Sep 11, 2009 at 11:02 AM, John Baldwin <jhb at freebsd.org> wrote:
> Try turning off KTR_LOCK for spin mutexes (just force LO_QUIET on in
> mtx_init() if MTX_SPIN is set)

I have *no* idea what you just said. :)

Which is fine.  But more to the point, I have no idea how to do it. :)

> A more recently schedgraph.py might also
> fix the bugs you were seeing with the idle threads looking too long (esp. at
> the start and end of graphs).

We are already on RELENG_7 due to the KTR-enabling rebuild, so that'd
be the version we're using unless, as Julian observed, it's been fixed
in the past week or so.

Thanks!