Re: [PATCH 0/3] Early use of boot service memory

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On Mon, Nov 18, 2013 at 11:34:04AM -0800, Yinghai Lu wrote:
> On Mon, Nov 18, 2013 at 7:32 AM, Vivek Goyal <vgoyal@xxxxxxxxxx> wrote:
> >> You may need bunch of PCIe cards installed.
> >>
> >> The system with 6TiB + 16 PCIe cards, second kernel OOM.
> >> The system with 4.5TiB + 16 PCIe cards, second kernel works with vmcore dumped.
> >
> > What's the distro you are testing with? Do you have latest bits of
> > makeudmpfile where we use cyclic mode by default and one does not need
> > more reserved memory because of more physical memory present in the
> > box. I suspect that might be the problem in your testing environment
> > and old makedumpfile wil try to allocate larger memory on large
> > RAM machines and OOM.
> 
> Default RHEL 6.4.
> 
> Will check if i can enable cyclic mode.

6.4 does not have makedumpfile cyclic mode support. 6.5 does and it
is enabled by default and no user intervention is required to enable it.

Thanks
Vivek

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