quick fix

example.env

@@ -157,4 +157,36 @@ OXICLOUD_WOPI_ENABLED=false
 #OXICLOUD_WOPI_TOKEN_TTL_SECS=86400
 
 # WOPI lock expiration in seconds (default: 1800 = 30 minutes)
-#OXICLOUD_WOPI_LOCK_TTL_SECS=1800
+#OXICLOUD_WOPI_LOCK_TTL_SECS=1800
+
+# -----------------------------------------------------------------------------
+# MEMORY ALLOCATOR TUNING (IMPORTANT FOR RAM USAGE)
+# -----------------------------------------------------------------------------
+# OxiCloud uses mimalloc as its global memory allocator for performance.
+# By default, mimalloc RETAINS freed memory in internal free-lists instead of
+# returning it to the operating system. This causes the process RSS to grow
+# over time (e.g., after large file uploads or password hashing) and never
+# shrink back — even though the application has already freed that memory.
+#
+# In containerized / memory-constrained environments (Docker, K8s, VPS with
+# limited RAM), this is critical: without these settings, the container can
+# appear to "leak" hundreds of MiB that are actually just retained by the
+# allocator.
+#
+# These variables are read directly by the mimalloc C library at startup.
+# They are NOT OxiCloud-specific — they are part of mimalloc's official API.
+# Docs: https://microsoft.github.io/mimalloc/environment.html
+
+# MIMALLOC_PURGE_DELAY: Delay (in ms) before freed memory is returned to the OS.
+#   0  = return immediately (RECOMMENDED for Docker / limited RAM)
+#   -1 = never return (maximum performance, highest RAM usage)
+#   10 = mimalloc default (slight delay for reuse optimization)
+# Setting this to 0 can reduce idle RAM by 80-120 MiB in typical deployments.
+MIMALLOC_PURGE_DELAY=0
+
+# MIMALLOC_ALLOW_LARGE_OS_PAGES: Use 2 MiB huge pages for allocations.
+#   0 = disabled (RECOMMENDED for Docker — avoids RSS inflation from THP)
+#   1 = enabled (better TLB performance on bare-metal servers with plenty of RAM)
+# When enabled with Linux Transparent Huge Pages (THP), partially-used 2 MiB
+# pages inflate the reported RSS by up to 20-30 MiB.
+MIMALLOC_ALLOW_LARGE_OS_PAGES=0