[tecleandor]

Yep, imgproxy seems to use libvips, that recommends jemalloc. I was checking and this is a funny (not) bug report:

https://github.com/libvips/libvips/discussions/3019

[jcupitt]

Hello, libvips author here. This is probably the canonical thread about libvips and memory fragmentation, and the funniest graph:

https://github.com/lovell/sharp/issues/955#issuecomment-5458...

(that specific graph is for switching from glib to the musl memory allocator, but jemalloc gives a very similar result)