Re: [Xen-devel] 5x dom0 memory increase from Xen/Linux 3.4/2.6.18 to 4.1/3.0.0

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Wed, Jun 22, 2011 at 03:22:30PM +0100, Anthony Wright wrote:
> On 22/06/2011 14:32, Konrad Rzeszutek Wilk wrote:
> > On Wed, Jun 22, 2011 at 02:15:35PM +0100, Anthony Wright wrote:
> >> Maybe I'm misreading the output, but I couldn't see any numbers that
> >> look like memory being assigned. I've attached the dmesg output. Do I
> >> need to enable a CONFIG variable to get the output I need or am I
> >> missing something.
> > The memblock=debug should give you some idea of what is Reserved. The
> > Reserved includes memory that is allocated by boot-time services (P2M,
> > pagetables, NUMA) and by real reservations (for example ACPI space).
> > Using the 'memblock=debug' can give you an idea of what services are
> > reserving the most. Then we can narrow down who or what is eating the gobs
> > of memory.
> >
> > see the 'Memory: ".. numbers. Also you might want to eliminate
> > the balloon usage space algother by doing two things:
> >
> > Xen command line: dom0_mem=max:512MB
> >
> > Linux command line: mem=512MB
> >
> > That will effectivly remove any balloon space (so your Dom0 will _never_
> > grow up).
> The problem is I can't see any lines in the kernel dmesg output
> (attached to previous email) that start "Memory: ", or anything else
> that looks hopeful. Is there anything else I should add to the command

dmesg | grep Memory: ?


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