hi,
On Wed, Dec 31, 2014 at 10:32 AM, Matthias Bodenbinder <
[email protected]> wrote:
> Hello Jo,
>
> it was just this week again where I was complaining to myself about the
> slow thumbnail build up of DT. From that point of view I give you a big
> thumb up for your proposal.
> Any speed up in this area is highly appreciated.
>
> Regarding the cache size of 4 GB thumbnails for 20k pictures: It would be
> nice if one could set a maximum value for this cache.
>
max cache value would be substantial amount of work. what would be easy is
to limit the resolution of the on-disk thumbnails to smaller mip map
levels. out of the 4GB my complete cache for my 20k images, 2.7G are for
the largest scale, and 856MB are for the next smaller one. the remaining
400somethingMB are pretty reasonable for 20k images i think.
still this is the area where there is still some work to be done (currently
it doesn't even check for full disk before write).
>
> By the way, what about BPG file format for thumbnails?
> http://bellard.org/bpg/lena.html
> http://bellard.org/bpg/
>
might be a good usecase for this, if compression and decompression speed
are no slower than jpg. i wouldn't consider it a priority.
-jo
>
>
> Kind regards
> Matthias
>
>
>
>
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