[Opensim-dev] Updating attachment assets

[Dave Coyle]

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