CFAdmin > Debugging & Logging > Debug Output Settings
tick Enable Metrics Logging
Select this option to enable ColdFusion Metrics Logging.
I have some tomcat metrics now. For interested readers contents:
"Information","scheduler-1","05/16/12","14:47:51",,"Max threads: 150 Current thread count: 8 Current thread busy: 0 Max processing time: 9443 Request count: 62 Error count: 1 Bytes received: 133 Bytes sent: 130660 Free memory: 42981784 Total memory: 238616576 Active Sessions: 0"
"Information","scheduler-1","05/16/12","14:48:51",,"Max threads: 150 Current thread count: 2 Current thread busy: 1 Max processing time: 9443 Request count: 62 Error count: 1 Bytes received: 133 Bytes sent: 130660 Free memory: 106822296 Total memory: 238616576 Active Sessions: 0"
"Information","scheduler-1","05/16/12","14:49:51",,"Max threads: 150 Current thread count: 2 Current thread busy: 0 Max processing time: 75772 Request count: 63 Error count: 1 Bytes received: 133 Bytes sent: 1428659 Free memory: 96648248 Total memory: 238616576 Active Sessions: 0"
"Information","scheduler-0","05/16/12","14:50:51",,"Max threads: 150 Current thread count: 4 Current thread busy: 1 Max processing time: 115526 Request count: 64 Error count: 1 Bytes received: 133 Bytes sent: 2726657 Free memory: 60275304 Total memory: 228327424 Active Sessions: 0"
"Information","scheduler-1","05/16/12","14:51:51",,"Max threads: 150 Current thread count: 8 Current thread busy: 5 Max processing time: 116536 Request count: 86 Error count: 2 Bytes received: 133 Bytes sent: 2788138 Free memory: 49445008 Total memory: 228327424 Active Sessions: 0"