[KPhotoAlbum] Annotation performance improvments

[Andreas Schleth]

Hi Robert,

I only did:
 >git reset --hard
 >git pull
and then I still got the older version.

What I missed was:
 >git checkout master
I tried some other branch a while ago and was still stuck there.

Now I am at:

Version v5.5-195-g8b4f6d4c

and the same test as before yields:

real    0m44,013s
user    0m11,554s
sys     0m0,833s

Whow! This really is an impressive improvement.
I recant my previous pessimism.

Thanks, Andreas
Am 18.01.20 um 17:01 schrieb Robert Krawitz:
> On Sat, 18 Jan 2020 16:42:13 +0100, Andreas Schleth wrote:
>> Hi Robert,
>>
>> as suggested, I did a test with my setup:
>>
>> thumbnail view on all images ... select 2 years, tag 8717 (of ~40k)
>> images w. one new tag ... home ... untag the same set of images ... home
>> ... exit (without saving)
>>
>> Version v5.5-150-g323e2b29 (old)
>> real    5m29,668s
>> user    4m43,596s
>> sys     0m1,196s
>>
>> Version v5.5-157-ge7a816cb (new)
>> real    4m48,113s
>> user    4m25,635s
>> sys     0m0,976s
>>
>> There is a short delay before the annotation dialog pops up
>> After tagging and hitting "done", KPA enters a phase of 100% CPU usage
>> and there is a long delay until the dialog window closes.
>> Afterwards, KPA hangs for about the same amount of time with 100% CPU
>> until I can close the thumbnail view.
>> The same delays happen in the untagging process.
> Both old and new predate my latest round of changes.  Please try the
> current master.


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