[Bug 279737] mpi3mr running out of chain in 14.1-RELEASE

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=279737

Kenneth D. Merry <ken@FreeBSD.org> changed:

           What    |Removed                     |Added
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             Status|New                         |Open

--- Comment #3 from Kenneth D. Merry <ken@FreeBSD.org> ---
Running out of chain frames is generally just a symptom of having a lot of I/O
going in parallel.  In and of itself, that isn't a bad thing.

The difference between 14.0 and 14.1 is probably just how hard the system is
pushing the controller.

You set the maximum number of chain frames to 16384, but that is actually the
default value in FreeBSD/head.  Assuming it is the same in 14, that means
nothing actually changed with the loader tunable.

Try going to 32768 and see if that fixes it.  It probably will, but if not,
double it again and see if that works.

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