SDWebImage: Extremely high memory usage, NSCollectionView

Platform Name: macOS Platform Version: 10.13.2 (17C205) SDWebImage Version: 4.2.3 Integration Method: Cocoapods Xcode Version: 9.2 (9C40b) Language: Swift 4

Hi guys,

I am using SDWebImage for download/show images to NSImageView inside NSCollectionView (flow layout) cells. images are located in AWS s3, image’s resolutions are 1280 × 853 (standard for all images) and file sizes varies between 110-190 kbyte. using HTTP instead of HTTPS, I can confirm images are cached alright because I do not see network activity after first pass, all images comes from cache. In the collection view there are 200 images max at the same time.

When I am creating NSCollectionViewItems and most of the objects I am using “unowned” / “weak” declarations, in deinit I am setting all possible objects to nil. I can tell there is no related leak when I check it with Instruments. There are some leaks but they comes from standard swift libraries and 200-300k in total.

Usage is pretty standard:

cell.imageView.sd_setImage(with: img_url, completed: nil)

Following config values set to false:

SDImageCache.shared().config.shouldDecompressImages
SDWebImageDownloader.shared().shouldDecompressImages

in a loop every 30 seconds calling

SDImageCache.shared().clearMemory()

After couple of times scrolled down then up memory usage hits to 1 - 1.5 GB in average for per tab. If I keep scrolling it climbs up… Even after I destroyed the window controller (cmd + w), it is not releasing memory. I can see deinit called.

To be sure is it my code or the library I added Kingfisher library in to my project, memory usage did not go up more than 600Mb for per tab. And released afterwards.

Last 4 days, I read every line in issues about high memory usage, tried everything in my knowledge but I stuck. I believe something wrong with the library when use it with macOS because there is no issue on IOS for same cases.

Actually i am writing new version of an old app of mine from 2013, it is using SDWebImage as well and it’s memory usage average is around 300-400Mb for per tab.

Any help or suggestions would be appreciated. I would like to post my project but it is huge.

I prepared a new project for test, please see attached zip file. If you scroll down and up couple of times you will see the extreme memory usage.

Cheers.

SDWebImageTest.zip Extremly