linux-kernel - Re: [TuxOnIce-devel] [RFC] TuxOnIce

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Date:	Tue, 12 May 2009 00:10:40 +0400
From:	Vladislav Bolkhovitin <vst@...b.net>
To:	Pavel Machek <pavel@....cz>
CC:	Shannon McMackin <smcmackin@...il.com>,
	linux-kernel@...r.kernel.org, tuxonice-devel@...ts.tuxonice.net
Subject: Re: [TuxOnIce-devel] [RFC] TuxOnIce


Pavel Machek, on 05/10/2009 09:38 AM wrote:
> Hi!
> 
>>>> To summarise disadvantages:
>>>>
>>>> - only core has 8000 LoC
>>>> - it does stuff that can be easily done in userspace
>>>>     (and that todays distros _do_ in userspace).
>>>> - it duplicates uswsusp functionality.
>>>> - compared to [u]swsusp, it received little testing
>>>>
>>> To summarise advatages - for me tuxonice is the only hibernation method that works.
>>> (Till now I've had 3 machines - no one of them able to resume with in-kernel swsusp.)
>>>
>> Just to add my 2 cents as a user of TOI.  Every distro and release I've  
>> tried has one major issue with kernel hibernation.  Upon resume when  
>> hibernating large images, there's a residual footprint in swap.  Every  
>> further hibernation creates a larger footprint, to the order of an  
>> additional 5-7% each time.  Nobody has ever cared in any forum to  
>> explain why or how I might change that.
> 
> Maybe you should explain why it is a 'major issue'?
> 
> (Use swapoff -a; swapon -a to 'cure' it).

Great advice if you have used memory > physical memory!

Just run two firefox's and thunderbird and you will get that pretty quickly:

# free
              total       used       free     shared    buffers     cached
Mem:       2060560    2040656      19904          0      31452     360580
Swap:      5358296    1475504    3882792



> 								Pavel
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