linux-kernel - Re: [PATCH] x86_32: trim memory by updating e820 v2

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Message-ID: <86802c440801251616wb50fa15j8671de0200dad922@mail.gmail.com>
Date:	Fri, 25 Jan 2008 16:16:20 -0800
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Justin Piszcz" <jpiszcz@...idpixels.com>
Cc:	"Jesse Barnes" <jesse.barnes@...el.com>, "Andi Kleen" <ak@...e.de>,
	"Ingo Molnar" <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"Andrew Morton" <akpm@...ux-foundation.org>
Subject: Re: [PATCH] x86_32: trim memory by updating e820 v2

On Jan 25, 2008 4:01 PM, Justin Piszcz <jpiszcz@...idpixels.com> wrote:
>
>
...
> Tried it, it worked successfully!
>
> With stock kernel, previous way I had to use it was mem=8832M and top
> showed this:
>
> top - 18:53:52 up 1 min,  2 users,  load average: 1.03, 0.30, 0.10
> Tasks: 169 total,   1 running, 168 sleeping,   0 stopped,   0 zombie
> Cpu(s):  6.1%us,  2.6%sy,  4.5%ni, 81.3%id,  5.5%wa,  0.0%hi,  0.0%si,  0.0%st
> Mem:   8039464k total,  1288948k used,  6750516k free,     3640k buffers
> Swap: 16787768k total,        0k used, 16787768k free,   178528k cached
>
> With kernel you mentioned and use e820 v3:
>
> top - 18:48:13 up 3 min,  6 users,  load average: 1.67, 0.68, 0.25
> Tasks: 195 total,   2 running, 193 sleeping,   0 stopped,   0 zombie
> Cpu(s): 18.5%us,  1.2%sy,  1.6%ni, 74.8%id,  3.9%wa,  0.0%hi,  0.0%si,  0.0%st
> Mem:   8037668k total,  1438732k used,  6598936k free,     6844k buffers
> Swap: 16787768k total,        0k used, 16787768k free,   273928k cached
>
> No append mem= required.
>


thanks

any chance to try 32 bit with higemem64 option?

YH
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