Tomcat Monitoring Integration
and get insightful visualizations and timely alerts for your Tomcat server metrics
Integration¶
- Instructions: https://apps.sematext.com/ui/howto/Tomcat/overview
Metrics¶
| Metric Name Key (Type) (Unit) |
Description |
|---|---|
| cache lookups tomcat.cache.lookups (long counter) |
Number of times the cache was accessed |
| cache hits tomcat.cache.hits (long counter) |
Number of times the cache was hit |
| size tomcat.cache.size (long gauge) (bytes) |
current cache size |
| max cache size tomcat.cache.size.max (long gauge) (bytes) |
The maximum size of the static resource cache |
| datasource connection init size tomcat.datasource.init (long gauge) |
The initial number of connections that are created when the pool is started |
| max active connections tomcat.datasource.active.max (long gauge) |
The maximum number of active connections that can be allocated from this pool at the same time |
| max idle datasource connections tomcat.datasource.idle.max (long gauge) |
The maximum number of connections that should be kept in the pool at all times |
| min idle datasource connections tomcat.datasource.idle.min (long gauge) |
The minimum number of established connections that should be kept in the pool at all times |
| active connections tomcat.datasource.active (long gauge) |
Current Active |
| idle datasource connections tomcat.datasource.idle (long gauge) |
The number of established connections in the pool that are idle |
| executor active threads tomcat.executors.active (long gauge) |
Number of threads currently processing a task |
| executor completed tasks tomcat.executors.tasks.completed (long counter) |
Number of tasks completed by the executor |
| executor core thread pool size tomcat.executors.core (long gauge) |
Core size of the thread pool |
| executor max queue size tomcat.executors.queue.size.max (long gauge) |
Maximum number of tasks for the pending task queue |
| max executor threads tomcat.executors.max (long gauge) |
Maximum number of allocated threads |
| min spare executor threads tomcat.executors.spare.min (long gauge) |
Minimum number of allocated threads |
| executor threads pool size tomcat.executors.pool (long gauge) |
Number of threads in the pool |
| executor queue tomcat.executors.queue.size (long gauge) |
Number of tasks waiting to be processed |
| requests tomcat.requests (long counter) |
Cumulative request count of the Apache Tomcat container |
| bytes received tomcat.requests.transfer.rx.bytes (long counter) (bytes) |
Bytes received by all the request processors running on the Apache Tomcat container (without headers) |
| bytes sent tomcat.requests.transfer.tx.bytes (long counter) (bytes) |
Bytes sent by all the request processors running on the Apache Tomcat (without headers) |
| req processing time tomcat.requests.processing.time (long counter) (ms) |
Cumulated processing time |
| error requests tomcat.requests.errors (long counter) |
Error count on all the request processors running on the Apache Tomcat container |
| jsp loaded count tomcat.jsp.loaded (long counter) |
The number of JSPs that have been loaded into a webapp |
| jsp reload count tomcat.jsp.reloaded (long counter) |
The number of JSPs that have been reloaded |
| jsp unload count tomcat.jsp.unloaded (long counter) |
The number of JSPs that have been unloaded |
| session average alive time tomcat.sessions.alive.time (long gauge) (ms) |
Average time an expired session had been alive |
| rejected sessions tomcat.sessions.rejected (long counter) |
How often was a configured maxActiveSessions limit reached |
| session max alive time tomcat.sessions.alive.time.max (long gauge) (ms) |
Measured from session creation to expiration (be it logout or session idle timeout) |
| session processing time tomcat.sessions.processing.time (long counter) (ms) |
Total processing time since startup |
| active sessions tomcat.sessions.active (long gauge) |
Number of active sessions at this moment |
| expired sessions tomcat.sessions.expired (long counter) |
Number of sessions that expired (doesn't include explicit invalidations) |
| max active sessions tomcat.sessions.active.max (long gauge) |
Max number of concurrent active sessions |
| created sessions tomcat.sessions (long counter) |
Total number of sessions created since startup |
| current busy threads tomcat.threads.busy (long gauge) |
Thread pool usage. Current worker threads busy count |
| current threads tomcat.threads (long gauge) |
Thread pool usage. Current worker threads count |
| max threads tomcat.threads.max (long gauge) |
Additional threads will be created up to the configured maximum |
| poller thread count tomcat.threads.pollers (long gauge) |
The number of threads used to poll kept alive connections |
| acceptor threads tomcat.threads.acceptors (long gauge) |
The number of threads to be used to accept connections |
| max connections tomcat.connections.max (long gauge) |
The maximum number of connections that the server will accept and process at any given time |
| connections tomcat.connections (long gauge) |
The current count of connections handled by this endpoint |
| max servlet processing time tomcat.web.execution.time.max (long gauge) (ms) |
Maximum execution time of all servlets in this context |
| servlet errors tomcat.web.errors (long counter) |
Cumulative error count of all servlets in this context |
| servlets processing time tomcat.web.execution.time.total (long counter) (ms) |
Cumulative execution times of all servlets in this context |
| min servlet processing time tomcat.web.execution.time.min (long gauge) (ms) |
Minimum execution time of all servlets in this context |
| servlet requests tomcat.web.requests (long counter) |
Cumulative request count of all servlets in this context |