Merge pull request #529 from hubmapconsortium/yuanzhou/ec2-type-downgrade

32x8 -> 16x16 for EC2 PROD VM downgrade

Author: yuanzhou

src/app.py

@@ -163,7 +163,7 @@ def http_internal_server_error(e):
 if MEMCACHED_MODE:
     try:
         # Use client pool to maintain a pool of already-connected clients for improved performance
-        # The uwsgi config launches the app across multiple threads (8) inside each process (32), making essentially 256 processes
+        # The uwsgi config launches the app across multiple threads (16) inside each process (16), making essentially 256 processes
         # Set the connect_timeout and timeout to avoid blocking the process when memcached is slow, defaults to "forever"
         # connect_timeout: seconds to wait for a connection to the memcached server
         # timeout: seconds to wait for send or reveive calls on the socket connected to memcached

src/uwsgi.ini

@@ -13,14 +13,14 @@ log-4xx = true
 log-5xx = true
 logto = /usr/src/app/log/uwsgi-entity-api.log
 
-# Master with 32 worker process (based on CPU number)
+# Master with 16 worker processes (based on CPU number)
 master = true
-processes = 32
+processes = 16
 
 # Enable the multithreading within uWSGI
 # Launch the application across multiple threads inside each process
 enable-threads = True
-threads = 8
+threads = 16
 
 # Use http socket for integration with nginx running on the same machine
 socket = localhost:5000