Why is my file of lrdata of LR3 30 times larger than my LR2 version?

While trying to find ways to speed up performance in LR3.3 I noticed that my preview LR3.3 file catalog (lrdata) is 15 GB.  I looked at my LR2.7 catalog Preview file and it is 500 MB.  Anyone has an idea as to why my recently updated catalog has a lrdata of 15 GB file?  Could this adds to the downturn I knew?

Also, I threw all 1:1 previews it draws the menu drop down and the lrdata is always 15 GB.

The .lrcat file is actually houses two databases SQLite associated with previews. You can try these compact by hand, if you wish.

Probably what happened is that Lr 3's not as aggressive on the compaction of the unused space. They probably saw a good amount of unnecessary churn when you do it, and it can be a significant performance decrease. Allocate more space is expensive. So, when you know that you're probably going to use the space again, a good technique is to recycle the space you have already allocated.

It is a probably a space typical vs time performance tweak.

There is probably some great threshold that must be reached before the space is available and the compact DB.

Tags: Photoshop Lightroom

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