[fedora-arm] Testing CMA=64M on low memory devices (BeagleBones)

[Peter Robinson]

On Fri, Aug 15, 2014 at 5:40 PM, Nicolas Chauvet <kwizart at gmail.com> wrote:
> Hi,
>
> I would request beaglebones users (either Black or white) to do some tests
> about a possible
> cma=64M to be set on kernel cmdline:
>
> # sed -i 's/^ABC_BASEARGS="\(.*\)"/ABC_BASEARGS="\1 cma=64M\"/'
> /etc/sysconfig/arm-boot-config
> # a-b-c
> # reboot
>
> By default cma is set to 16 and is not enought for some cases: (see
> rhbz#1127000)
> The goal is to see how it behaves on bb
>
> Journalctl -b currently shows:
>   cma: CMA: reserved 16 MiB at 3e800000
> At should show 64 MiB on the next boot.
>
> What would be nice to test is for possible regression on memory usage or
> else.
> I let the cma conservative camp to provide any appropriate tests to support
> theirs arguments:
> https://bugzilla.redhat.com/show_bug.cgi?id=1127000#c15

I don't see why the reverse use case can't be done. It's not all about
just the devices you use.

I also don't see why you've moved this discussion from the BZ where it
was being discussed to the list all of a sudden

Peter