Specify how many workers to use

InvenTree/InvenTree/settings.py

@@ -12,6 +12,7 @@ database setup in this file.
 """
 
 import logging
+from multiprocessing import Value
 import os
 import random
 import string
@@ -347,10 +348,22 @@ REST_FRAMEWORK = {
 
 WSGI_APPLICATION = 'InvenTree.wsgi.application'
 
+background_workers = os.environ.get('INVENTREE_BACKGROUND_WORKERS', None)
+
+if background_workers is not None:
+    try:
+        background_workers = int(background_workers)
+    except ValueError:
+        background_workers = None
+
+if background_workers is None:
+    # Sensible default?
+    background_workers = 4
+
 # django-q configuration
 Q_CLUSTER = {
     'name': 'InvenTree',
-    'workers': 4,
+    'workers': background_workers,
     'timeout': 90,
     'retry': 120,
     'queue_limit': 50,

docker/Dockerfile

@@ -27,6 +27,10 @@ ENV INVENTREE_MEDIA_ROOT="${INVENTREE_DATA_DIR}/media"
 ENV INVENTREE_CONFIG_FILE="${INVENTREE_DATA_DIR}/config.yaml"
 ENV INVENTREE_SECRET_KEY_FILE="${INVENTREE_DATA_DIR}/secret_key.txt"
 
+# Worker configuration (can be altered by user)
+ENV INVENTREE_GUNICORN_WORKERS="4"
+ENV INVENTREE_BACKGROUND_WORKERS="4"
+
 # Default web server port is 8000
 ENV INVENTREE_WEB_PORT="8000"
 

docker/gunicorn.conf.py

@@ -1,6 +1,22 @@
 import multiprocessing
+import os
+import logging
 
-workers = multiprocessing.cpu_count() * 2 + 1
+
+logger = logging.get('inventree')
+
+workers = os.environ.get('INVENTREE_GUNICORN_WORKERS', None)
+
+if workers is not None:
+    try:
+        workers = int(workers)
+    except ValueError:
+        workers = None
+
+if workers is None:
+    workers = multiprocessing.cpu_count() * 2 + 1
+
+logger.info(f"Starting gunicorn server with {workers} workers")
 
 max_requests = 1000
 max_requests_jitter = 50