better memory allocator

standalone.template.yml

@@ -14,6 +14,8 @@ env:
   UNICORN_WORKERS: 3
   # slightly less aggressive than "recommendation" but works fine with oobgc
   RUBY_GC_MALLOC_LIMIT: 25000000
+  # way more efficient allocator
+  LD_PRELOAD: /usr/lib/libjemalloc.so.1
 
 params:
   # SSH key is required for remote access into the container