Reliability Metrics
Uptime
Availability

General Server Metrics
Number of Requests Served
Number of Requests Served per Minute
Total Processing Time
Total Processing Time per Minute

Resource Utilization Metrics
JVM Active Thread Count
JVM Active Thread Group Count
JVM Free Memory
JVM Total Memory
Process CPU System Time
Process CPU User Time
Process Memory Size
Process Shared Memory Size
Process Open File Descriptors

Tomcat 4.1 and 5.x Webapp Metrics
Number of Requests Served
Number of Requests Served per Minute
Number of errors
Number of errors per Minute
Sessions Created
Sessions Created per Minute
Sessions Destroyed
Sessions Destroyed per Minute
Minimum Response Time of a servlet
Maximum Response Time of a servlet
Average Response Time
Total Processing Time for the webapp
Total Processing Time for the webapp per Minute
Availability
Expired Sessions
Expired Sessions per Minute
Rejected Sessions
Rejected Sessions per Minute
Max Active Sessions

Tomcat 4.0, 4.1 and 5.x Servlet Metrics
Availability
Request Count
Request Count per Minute
Error Count
Error Count per Minute
Maximum Response Time
Average Response Time
Min Response Time
Processing Request Time
Processing Request Time per Minute

Tomcat 4.1 and 5.x Connector Metrics
Availability
Bytes Received
Bytes Received per Minute
Bytes Sent
Bytes Sent per Minute
Error Count
Error Count per Minute
Request Count
Request Count per Minute
Maximum Request Time
Processing Request Time
Processing Request Time per Minute
Threads Allocated
Threads Active

Tomcat 4.0 Webapp Metrics
Number of Requests Served
Number of Requests Served per Minute
Number of errors
Number of errors per Minute
Sessions Created
Sessions Created per Minute
Sessions Destroyed
Sessions Destroyed per Minute
Minimum Response Time of a servlet
Maximum Response Time of a servlet
Average Response Time
Total Processing Time for the webapp
Total Processing Time for the webapp per Minute
Availability

Tomcat Control Specification