On Oct 19, 2006, at 9:02 AM, Jimi Xenidis wrote:

On Oct 19, 2006, at 2:30 AM, Amos Waterland wrote:

On a JS21 with 8GB of RAM, we attempt 8 runs with the following dom0
memory requests: 128M 192M 256M 512M 700M 1G 2G 7G.

Ok, we know that > 2G of dom0 is not currently supported with the way we track memory today, described in:

I'm surprised we need as much as 256M just to load dom0, but happy
that 2G works now.

I'm surprised that any amount from 64M to 2G (currently forced in 16M increments) does not allow for Dom0 to successfully make it thru init. If fact, the maples (which only have 512M) give 192M to dom0 by default.

These are OOM issues with the kernel?
If you cap Linux (without Xen) to these memory limits does Linux succeed?
lets pick on 192, can you post a complete log?

*sigh* it occurs to me that now that VIO is turned on we basically have allocated a struct page for every page on the machine in addition to the normal pages that dom0 will use, this would indeed have an impact on how much memory Dom0 has.


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