Forces a Java garbage collection for the connector, recovering memory. An example of the memory used, garbage collection, and resulting memory usage below.
mysql> tungsten mem info;
+-----------------------+-------------------------------------------------------+
| JVM Memory statistics | Value in bytes |
+-----------------------+-------------------------------------------------------+
| Peak Thread Count | 18 |
| Heap Memory | init = 67108864(65536K) used = 17437496(17028K) |
| | committed = 64880640(63360K) max = 259522560(253440K) |
| Non-heap Memory | init = 24313856(23744K) used = 13970024(13642K) |
| | committed = 24313856(23744K) max = 224395264(219136K) |
| Thread Count | 16 |
+-----------------------+-------------------------------------------------------+
4 rows in set (0.05 sec)
mysql> tungsten gc;
+-------------------------------+
| Message |
+-------------------------------+
| Garbage collection successful |
+-------------------------------+
1 row in set (0.41 sec)
mysql> tungsten mem info;
+-----------------------+-------------------------------------------------------+
| JVM Memory statistics | Value in bytes |
+-----------------------+-------------------------------------------------------+
| Peak Thread Count | 18 |
| Heap Memory | init = 67108864(65536K) used = 4110088(4013K) |
| | committed = 64946176(63424K) max = 259522560(253440K) |
| Non-heap Memory | init = 24313856(23744K) used = 13970024(13642K) |
| | committed = 24313856(23744K) max = 224395264(219136K) |
| Thread Count | 16 |
+-----------------------+-------------------------------------------------------+
4 rows in set (0.00 sec)