[Opensim-dev] Updating attachment assets

[Justin Clark-Casey]

Hi Bo.  You're not to know, but we have a long standing policy of not putting features into Mantis.  This hasn't been 
clear and has lapsed a bit.

So I cleaned up [1] a bit, which is the wiki place for feature proposals.  However, any proposal should be run by this 
list here.  And either the proposer will have to be prepared to implement it themselves (which still doesn't guarantee 
inclusion) or persuade other people to implement it (which is difficult).  If they don't do these things then it will 
almost certainly simply be ignored.

At some point possibly very soon I will be closing all the feature requests in the wiki and redirecting people to this 
list and that wiki location.

[1] http://opensimulator.org/wiki/Developer_Documentation#Feature_Proposals

On 05/10/11 08:18, Bo wrote:
> Hello,
> i put my idea about live and backup assets tables which i mentioned here
> before into a Mantis.
> http://opensimulator.org/mantis/view.php?id=5730
>
> I think that we don't really need to purge assets. Only what we need is have
> unused assets, inventory folders and inventory items in separate backup tables
> so most of the operations is done within small tables and even grids with rich
> history can have very fast assets servers.
>
> Bo
>
> On Wednesday 05 of October 2011 01:06:55 Dave Coyle wrote:
>> On Oct 3, 2011, at 8:01 PM, Justin Clark-Casey wrote:
>>> Needless to say, distributed garbage collection is extremely hard.
>>
>> A year ago I broke out the 20 million assets OSGrid had by file size[1],
>> and 50% of them were<= 4KB uncompressed.  With deduplication and
>> compression those 20 million assets would've taken up about 125GB of space
>> on disk.  That was 3 years of stuff from tens of thousands of users.  It
>> was easier and cheaper just to throw hardware at the problem and not worry
>> about it than to come up with a mechanism to cull unused assets.
>>
>> Granted, that was before mesh started picking up steam, and another grid's
>> experience won't necessarily mirror that of OSGrid's.  But it's a data
>> point.
>>
>> [1] -- http://coyled.com/2010/09/23/osgrid-asset-sizes/ (those are
>> uncompressed file sizes)
>>
>> -coyled
>>
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-- 
Justin Clark-Casey (justincc)
http://justincc.org/blog
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