Re: LSI supported mps(4) driver available

On 21 January 2012 09:58, Kenneth D. Merry <ken_at_freebsd.org> wrote:

> On Fri, Jan 20, 2012 at 23:14:20 -0000, Steven Hartland wrote:
> > ----- Original Message -----
> > From: "Kenneth D. Merry" <ken_at_freebsd.org>
> > To: <freebsd-scsi_at_freebsd.org>; <freebsd-current_at_freebsd.org>
> > Sent: Friday, January 20, 2012 8:44 PM
> > Subject: LSI supported mps(4) driver available
> >
> >
> > >
> > >The LSI-supported version of the mps(4) driver that supports their 6Gb
> SAS
> > >HBAs as well as WarpDrive controllers, is available here:
> > >
> > >http://people.freebsd.org/~ken/lsi/mps_lsi.20120120.1.txt
> > >
> > >I plan to check it in to head next week, and then MFC it into stable/9 a
> > >week after that most likely.
> >
> > Great to see this being done, thanks to everyone! Be even better to see
> > this MFC'ed to 8.x as well if all goes well. Do you think this will
> > possible?
>
> Yes, that should be doable as well.  It's unlikely that all of the CAM
> changes will get merged back, but the driver itself shouldn't be a problem.
>
> Ken
>

Has this driver been MFC to 8-STABLE yet ?

I'm asking because I updated my NAS on the 4th of March from 8-STABLE
r225723 to r232477 and am now seeing 157,000 interrupts per second on irq
16 where my SuperMicro AOC-USAS2-L8i resides (this card uses the LSI
SAS2008 chip).

More details are in a thread on the freebsd-stable mailing list entitled
"157k interrupts per second causing 60% CPU load on idle system".  The
first message is here:
http://www.freebsd.org/cgi/getmsg.cgi?fetch=152290+156717+/usr/local/www/db/text/2012/freebsd-stable/20120325.freebsd-stable

If this new driver isn't in 8-STABLE yet I think I'll try upgrading the
whole system to 9-STABLE.