Massive spike in CPU usage when running diff on a large object

[User9684]

Hi, I run a Discord bot that constantly checks differences in a relatively large object and sends messages accordingly, and I've noticed that every time diff is ran on the object, CPU usage spikes a ton. (See image)

In my case, the object has roughly 8,100 elements.

[User9684]

Also, I have no idea how CPU spiked to 160% in that image.

[cerebralkungfu]

I'd love to see a "relatively large object" similar to your case, that I can use for testing. I am working on a significant update (v2.x) which uses a different (more efficient) algorithm and would like to test.

Without the data to test your case, I would guess it is due to the stack. Not only is deep-diff recursive, I track cycles in the graph (recursion in your data), which can cause lots of tracking data on deeply nested objects. But of course, this is speculation.

The new version will give you the option to turn off checking for cycles, which should save some memory in your use case... but I'd only know for sure if I can test with similar data.

[User9684]

I'd love to see a "relatively large object" similar to your case, that I can use for testing. I am working on a significant update (v2.x) which uses a different (more efficient) algorithm and would like to test.

Without the data to test your case, I would guess it is due to the stack. Not only is deep-diff recursive, I track cycles in the graph (recursion in your data), which can cause lots of tracking data on deeply nested objects. But of course, this is speculation.

The new version will give you the option to turn off checking for cycles, which should save some memory in your use case... but I'd only know for sure if I can test with similar data.

I was particularly monitoring changes to the Roblox Fast Flags list, which changes relatively often.