How to speed up thumbnail building

jrosen2

Newbie

Posts: 8

How to speed up thumbnail building

« on: July 09, 2014, 05:54:46 PM »

It takes a very long time to display thumbs on my version (the latest) of qimage ultimate. My photos are from a Sony A7r and raw files are 36 mb in size. They take over a 10 seconds to load just 2. I have set thumb quality to low and size to small, but that doesn't appear to change anything. Is there a setting I am missing? It seems much slower lately, although I can't say exactly when the slowing started. I have emptied the cache, but no improvement.
Thanks in advance.


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Fred A

Forum Superhero

Posts: 5644

Re: How to speed up thumbnail building

« Reply #1 on: July 09, 2014, 06:25:22 PM »

Quote

It is the cache build that appears to be slow. The thumbs are quite fast.
But you have the operation backwards.
You don't want to delete the cache because you cause Qimage to rebuild the cache files.
Cache files are built one time per image. The next time Qimage opens to that folder, everything is instantaneous.

The only time I remove cache files would be when house keeping, and I do it though the UTILITY menu in Qimage where I decide to have Qimage clean up cache files and thumbs that are 6 months or a year old.

So have patience while the thumbs and cache build. You can watch the progress at the top of your screen.
Enjoy
Fred


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jrosen2

Newbie

Posts: 8

Re: How to speed up thumbnail building

« Reply #2 on: July 10, 2014, 02:21:37 PM »

OK. Is there any way to speed up cache building. It seems much slower than before with previous versions.


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Fred A

Forum Superhero

Posts: 5644

Re: How to speed up thumbnail building

« Reply #3 on: July 10, 2014, 04:22:41 PM »

Quote

OK. Is there any way to speed up cache building. It seems much slower than before with previous versions.

The only slower part is just that the camera trend lately is MORE PIXELS.
Whereas my Canon 20D Raw files are 7 or 8 Megabytes in Raw, the newer cameras are producing 75 megabyte files in RAW.

The good part is they only build one time.
To speed up the process, make sure you have the fastest setting for your processor.
Quad core is the best for my old computer.
See snap.

Fred


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rpitas

Newbie

Posts: 19

Re: How to speed up thumbnail building

« Reply #4 on: July 10, 2014, 04:49:02 PM »

I have the same issue with Canon 70D RAW files, so I try not to open RAW file folders in Qimage at all. When I click on one of these folders in error I can't stop the process of thumbnail building in order to open another folder. I must force the program to close. There is an option Under "Thumb/cache builder" to " Stop RAW Cache Builder" but it doesn't have any effect --actually the button is "grayed out and inactive most of the time when the cache is building. Is there a way to stop the building of the RAW cache once it is initiated?


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Fred A

Forum Superhero

Posts: 5644

Re: How to speed up thumbnail building

« Reply #5 on: July 10, 2014, 04:54:38 PM »

Quote

I must force the program to close. There is an option Under "Thumb/cache builder" to " Stop RAW Cache Builder" but it doesn't have any effect --actually the button is "grayed out and inactive most of the time when the cache is building. Is there a way to stop the building of the RAW cache once it is initiated?

Just change folders and the raw cache will stop. It might take 5 or 6 seconds until the set of 4 finishes, (4 are built at once). Then it will stop.
When you go back to that folder, it will pick up where it left off building.
If you click Stop Raw cache, it will stop or prevent Raw Cache from building. But it does not stop THUMB building.

Quote

actually the button is "grayed out and inactive most of the time when the cache is building.

That's while the thumbs are building it's grayed out. See the top of the screen for running progress report of the building process.

Fred


« Last Edit: July 10, 2014, 04:58:51 PM by Fred A »	Logged

jrosen2

Newbie

Posts: 8

Re: How to speed up thumbnail building

« Reply #6 on: July 11, 2014, 10:57:01 AM »

Why do we need a cache? I use thumbs just to identify potential printable photos. I assume once the thumb is selected, the raw file is then loaded as that also takes time. In Lightroom, for instance, thumbs of imported files appear instantly. These may be the embedded thumbs in the raw files. Why not the same in Qimage?


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Fred A

Forum Superhero

Posts: 5644

Re: How to speed up thumbnail building

« Reply #7 on: July 11, 2014, 11:41:59 AM »

Quote

Why does Lightroom need to build Libraries?

The point is that Qimage is designed for the highest quality images and prints.
It uses a system that maintains image integrity and quality.
It never alters, destroys, or finagles the original image.
It caches the Raw images first.
It takes a minute or two to build the cache ONE TIME. (Assuming a large number of images per folder)

After that, it is seamless, and very quick.

If you don't want cache files, you can turn them off. See snap attached.


« Last Edit: July 11, 2014, 12:41:30 PM by Fred A »	Logged

tonygamble

Sr. Member

Posts: 373

Re: How to speed up thumbnail building

« Reply #8 on: July 11, 2014, 02:05:17 PM »

jrosen,

If time is the essence my advice is to load your files into a folder and open it in QU immediately. It's the first thing I do when I take a fresh camera card to my studio. Do it before you do anything else like tidying your desk, checking your emails or turning on the coffee pot.

I also know that any folder I load will contain some rubbish. What I then do is to quickly flick through it in Fast Picture Viewer and dump the dross that you will never consider using. It usually takes the same time as QU needs to build the RAW caches.

Then QU will work pretty well instantly. I use FPV to do the next stage of culling but QU has a well honed rating system which others find better - so it's essentially a matter of deciding what suits you best.

Tony


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