libvips shouldn't be calling imagemagick for heif decode, it has a nice one built in. Unless you were using a very old libvips! I've found jemalloc works best

libvips shouldn't be calling imagemagick for heif decode, it has a nice one built in. Unless you were using a very old libvips! I've found jemalloc works best for long running libvips processes, fwiw.