David532 wrote:I have notice that during the 6 minutes of thumbnail creation (if that's what's going on) the keyword list in the Library Tool Tab populates immediately but selecting a keyword does not show the associated pictures till the orange disk action has got round to them which if they are at the end of your selected sort order could be a long time.
Looking at three areas of interest, 1) program start, 2) the thumbnails, and 3) program end: -
1) Program Start
When I start the program and All Images is selected, looking at the Resource Manager, I note the following activity:-
a) If an external drive of original images is attached, the program goes through and reads a small part of each image file on the external drive, taking several minutes. This seems to only happen if the program is started for the first time since the last system reboot, so for subsequent program starts, this doesn't happen. If no external drive is attached, this whole process does not occur.
b) The pie-progress counter runs for a few minutes. It can be that this pie counter runs even when a) above has ceased or not occurring, as in, when there is no disk read or write activity. So, the pie-progress counter appears to be a memory/cpu/virtual-memory based task, with the CPU around 50%, dropping to <5% once the pie has stopped.
2) Thumbnails
On my system, it appears that the thumbnails are not generated on import when the preview files for all raw/original files are generated. I note that the thumbnails are generated when an image is displayed in the thumbnail browser that hasn't been viewed in the thumbnail browser previously. When thumbnail generation occurs, I see the following activity: -
a) If an external drive of original images is attached, and thumbnails are generated, the thumbnails are generated from the raw/original files. If no external drive is attached, the thumbnails appear to be generated from the COP preview files in the cache.
b) The pie-progress counter runs for a few seconds, depending on how many images.
3) Program End
In my case, after closing down the program, which takes initially a few seconds to close the windows, and then I see the following activity: -
a) Database and other file access/read/write activity goes on in the background for at least one minute afterwards.
So, from the above, when the pie-progress counter is showing, there appears to be something going on in memory rather than on disk. So, it may not necessarily be associated with thumbnail creation, but may be some kind of data/metadata checking.
All just guesses, and of course doesn't change much
