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From: Gene Heskett <gene.heskett@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: Kyle Moffett <mrmacman_g4@mac.com>
Subject: Re: mmap error?
Date: Mon, 02 Apr 2007 15:35:17 -0400	[thread overview]
Message-ID: <200704021535.17567.gene.heskett@gmail.com> (raw)
In-Reply-To: <8EF5AE61-FC1C-4BA2-BB8D-B55221D8846B@mac.com>

On Monday 02 April 2007, Kyle Moffett wrote:
>On Apr 02, 2007, at 13:54:28, Gene Heskett wrote:
>> Ahh, thank you very much.  But I have 7.0, supposedly fixed,
>> sigh...  That did fix it, the dvd is burning as I type, again thanks.
>>
>> ???? Can I put this into rc.local so its global?  I guess I will
>> just for effects.  Or is there an option in a make xconfig to reset
>> this to a usable sized limit?, because I can see cups also having
>> problems since I have its render cache set for 127 megs, which
>> should also trigger this.
>
>Well, that's not a limit on how much memory you can map, it's a limit
>on how many pages you can lock into memory (as in, cannot be swapped
>out or written back to disk and reused).  For low-latency
>applications (IE: cd burning) you need to have all memory mlocked so
>that you don't get a low-latency wakup and then promptly lose all
>latency guarantees by swapping madly, but something like CUPS doesn't
>have a problem because it doesn't use mlock() or mlockall().
>
Ah, that clarifies that then, thanks Kyle.

>Cheers,
>Kyle Moffett



-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
The perversity of nature is nowhere better demonstrated by the fact that, 
when
exposed to the same atmosphere, bread becomes hard while crackers become 
soft.

      reply	other threads:[~2007-04-02 19:35 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-04-02 14:30 Gene Heskett
2007-04-02 17:35 ` Ken Moffat
2007-04-02 17:54   ` Gene Heskett
2007-04-02 18:02     ` Kyle Moffett
2007-04-02 19:35       ` Gene Heskett [this message]

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