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

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Message-ID: <CAE9FiQWue3rBVTmXAMoBpWCTgFQ1VP+bkm-k_v1wx4U94ctPBA@mail.gmail.com>
Date:	Mon, 18 Nov 2013 11:34:04 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Vivek Goyal <vgoyal@...hat.com>
Cc:	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...nel.org>,
	jerry.hoemann@...com, Pekka Enberg <penberg@...nel.org>,
	Rob Landley <rob@...dley.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	x86 maintainers <x86@...nel.org>,
	Matt Fleming <matt.fleming@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"list@...ederm.org:DOCUMENTATION" <linux-doc@...r.kernel.org>,
	"list@...ederm.org:MEMORY MANAGEMENT" <linux-mm@...ck.org>,
	linux-efi@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/3] Early use of boot service memory

On Mon, Nov 18, 2013 at 7:32 AM, Vivek Goyal <vgoyal@...hat.com> 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.

Thanks

Yinghai
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