linux-kernel - Re: arcmsr & areca-1660 - strange behaviour under heavy load

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Date:	Tue, 26 Feb 2008 14:04:12 -0700
From:	Zan Lynx <zlynx@....org>
To:	Nikola Ciprich <extmaillist@...uxbox.cz>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	Nick Cheng <nick.cheng@...ca.com.tw>,
	Erich Chen <erich@...ca.com.tw>, kopi@...uxbox.cz
Subject: Re: arcmsr & areca-1660 - strange behaviour under heavy load


On Tue, 2008-02-26 at 20:29 +0100, Nikola Ciprich wrote:
> Hi Andrew,
> no, right now I have the machine in the weird state, swap is empty (3GB), 
> and so is bigger part of RAM (~100MB free), and the gcc crashes even when 
> trying to compile c program with empty main function. so it doesn't seem 
> to be problem with memory exhaustion.

Maybe memory fragmentation?  Perhaps the driver tries to allocate a
large block of memory and cannot find a continuous block of the right
size.

Maybe the driver developers used different kernel .config options than
you are using.  

Try increasing the value in /proc/sys/vm/min_free_kbytes.

Try switching some things like SLAB or SLUB, try booting with
kernelcore=512M to enable the Movable memory zone, or try 64-bit vs
32-bit kernels. 
-- 
Zan Lynx <zlynx@....org>

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