Update defaults for number of workers and rails threads and processes.

hermanzdosilovic · hermanzdosilovic · commit 113d9c74b465 · 2020-12-30T21:29:27.000+01:00
diff --git a/judge0.conf b/judge0.conf
@@ -99,7 +99,7 @@ SUBMISSION_CACHE_DURATION=
 INTERVAL=
 
 # Specify how many parallel workers to run.
-# Default: 1
+# Default: 2*nproc (https://linux.die.net/man/1/nproc)
 COUNT=
 
 # Specify maximum queue size. Represents maximum number of submissions that
@@ -332,12 +332,12 @@ MAX_EXTRACT_SIZE=
 RAILS_ENV=
 
 # Specify maximum number of concurrent Rails threads.
-# Default: 5
+# Default: nproc (https://linux.die.net/man/1/nproc)
 RAILS_MAX_THREADS=
 
 # Specify how many processes will be created for handing requests. Each process
 # will aditionally create RAILS_MAX_THREADS threads.
-# Default: 1
+# Default: 2
 RAILS_SERVER_PROCESSES=
 
 # Secret key base for production, if not set it will be randomly generated
diff --git a/scripts/load-config b/scripts/load-config
@@ -21,8 +21,8 @@ export RESTART_MAX_TRIES=${RESTART_MAX_TRIES:-10}
 
 # Rails
 export RAILS_ENV=${RAILS_ENV:-production}
-export RAILS_MAX_THREADS=${RAILS_MAX_THREADS:-5}
-export RAILS_SERVER_PROCESSES=${RAILS_SERVER_PROCESSES:-1}
+export RAILS_MAX_THREADS=${RAILS_MAX_THREADS:-$(nproc)}
+export RAILS_SERVER_PROCESSES=${RAILS_SERVER_PROCESSES:-2}
 export SECRET_KEY_BASE=${SECRET_KEY_BASE:-$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 128 | head -n 1)}
 export PORT=${PORT:-2358} # This option is not available in judge0.conf
 export RAILS_LOG_TO_STDOUT=true # This options is not available in judge0.conf
@@ -35,7 +35,7 @@ export AUTHZ_HEADER=${AUTHZ_HEADER:-X-Auth-User}
 
 # Workers
 export INTERVAL=${INTERVAL:-0.1}
-export COUNT=${COUNT:-1}
+export COUNT=${COUNT:-$(( $(nproc) * 2 ))}
 export QUEUE=${JUDGE0_VERSION:-unknown} # This option is not available in judge0.conf
 
 # Database
