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List:       ubuntu-devel
Subject:    update-manager behaviour [was: Auto-launching of applications]
From:       mark () ubuntu ! com (Mark Shuttleworth)
Date:       2009-02-25 10:01:03
Message-ID: 49A516DF.8050902 () ubuntu ! com
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Aigars Mahinovs wrote:
> 2009/2/23 Colin Watson <cjwatson at ubuntu.com>:
>   
>> This question assumes that opening unfocused in the background is
>> sufficient to cause it not to interfere with running applications. This
>> is not an obviously correct assumption. A 100MB footprint with
>> non-trivial extra I/O out of the blue (not in response to an explicit
>> user action) is more than enough to interfere with other things you're
>> doing regardless of focus, particularly the performance-critical things
>> given as examples above.
>>     
>
> This should be an important concern. It should be simple to write a
> very small C program that would start up, look at the system load
> running applications and available RAM and then only start a secondary
> application (such as an automatic update) when some conditions are
> met, for example system load <0.5 over last 15 minutes, 200Mb of free
> RAM (including cache RAM at 2:1 ratio). Then automatic security
> updates could be done in the background (if user so chooses) and also
> a button could be added to the update-manager to "Upgrade when idle".
>   

Yes, this is an approach we can pursue. Michael Vogt and MPT are looking
at low-hanging fruit in this regard for 9.04, and we can make a bigger
push to improve it in 9.10.

Mark
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