Another Test Run with Alternative pmap Implementation
Bernd Walter
ticso at cicely7.cicely.de
Thu Nov 27 18:26:29 UTC 2014
On Thu, Nov 27, 2014 at 10:09:53AM -0700, Ian Lepore wrote:
> On Wed, 2014-11-26 at 22:18 +0000, Weiß, Dr. Jürgen wrote:
> > I made a testrun with the updated source tree and the patches for
> > the jetson tk1 platform. With
> >
> > options ARM_NEW_PMAP
> > options DEBUG
> > options DIAGNOSTIC
> > options INVARIANTS # Enable calls of extra sanity checking
> > options INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIAN
> >
> > and no special sysctl settings.
> >
> > A make -j6 buildworld finishes successfully after 2h15m. There is
> > one kernel message
> > kernel: warning: pmap_remove_pages called with non-current pmap
> >
> > /usr/src and /usr/obj over nfs, /tmp on tmpfs
> >
> > Regards
>
> That's similar to my results. I changed to -j20 to see if that would
> recreate the problems that Ulrich is seeing, but buildworld runs fine
> for me, in about 2 hours. I've never seen the non-current pmap warning
> on the system that uses a usb ssd drive as root, but I've seen it with
> nfs root.
Probably USB related - he wrote that he is using an USB memory stick.
> BTW, the DIAGNOSTIC option adds a LOT of performance overhead to an arm
> system without adding a lot of value. I usually leave it off, sometimes
> turn it on when I encounter a problem to see if it generates more info
> (usually it doesn't).
>
> -- Ian
>
>
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--
B.Walter <bernd at bwct.de> http://www.bwct.de
Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.
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