Re: Memory fragmentation and kvm_alloc_stage2_pgd

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On Sun, Aug 10, 2014 at 02:24:04PM +0100, Richard W.M. Jones wrote:
> kvm_alloc_stage2_pgd has to do an order 9 allocation, ie. 512
> contiguous pages I think.
> 
> This often leads to problems running qemu when memory is relatively
> low -- eg. if you have one VM running, a healthy number of host
> applications, and perhaps "just" 4GB free; then you decide to run the
> libguestfs test suite.
> 
> Any suggestions how to deal with this?
> 
I'm not familiar with the libguestfs test suite, but are you saying you
have 4GB of free physical memory and when you start your first VM then
you get this error?  That sounds unlikely to me.

-Christoffer
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