Merge pull request #1475 from khurtado/mariadb

Tune MariaDB settings for better performance

docker/pypi/wmagent-mariadb/README.md

@@ -67,6 +67,18 @@ local/mariadb              latest    4efa646aea3e   6 minutes ago    950MB
 ./mariadb-docker-build.sh -t 10.6.5 -p
 ```
 
+#### Building MariaDB on small nodes (e.g.: testbed)
+
+If you test on a machine/VM with less than 10G of memory, uncomment the following lines in my.cnf configuration
+(and comment the production ones for the same settings)
+
+```
+# Testbed (small nodes) with low memory
+#innodb_log_file_size=512M
+#innodb_log_buffer_size=8M
+#innodb_buffer_pool_size=2G
+```
+
 ### Running a MariaDB container
 
 We can run from the local repository or from upstream CERN registry. The typical

docker/pypi/wmagent-mariadb/my.cnf

@@ -46,9 +46,19 @@ innodb_checksum_algorithm=full_crc32
 # default: 1
 innodb_doublewrite=0
 
-innodb_log_file_size=512M
-innodb_log_buffer_size=8M
-innodb_buffer_pool_size=2G
+
+# Production nodes
+# Settings based on benchmark tests:
+# https://gitlab.cern.ch/dmwm/wmcore-docs/-/blob/master/docs/databases/MariaDB-benchmark.md
+innodb_log_file_size=2G
+innodb_log_buffer_size=16M
+innodb_buffer_pool_size=8G
+
+# Testbed (small nodes) with low memory
+#innodb_log_file_size=512M
+#innodb_log_buffer_size=8M
+#innodb_buffer_pool_size=2G
+
 # default: 30
 innodb_sync_spin_loops=60
 # default: 0