JVM
| Metric name | Illustration | Unit | Example value |
|---|---|---|---|
| cpu_p | CPU use rate of JVM process | % | 0.18% |
| cpu_s | CPU use rate collected by JVM is different from the os.cpu.load collected by the top command |
% | 1.91% |
| thread_live | Live thread count | Piece | 28 pieces |
| thread_live | Daemon thread count | Piece | 27 pieces |
| thread_peak | Peak thread count | Piece | 30 pieces |
| thread_started | Started thread count | Piece | 84 pieces |
| class_load | Loaded class count | Piece | 6423 pieces |
| class_unload | Unloaded class count | Piece | 0 piece |
| class_total | Total class count | Piece | 6423 pieces |
| mgc_count | MinorGC count | Time | 36 times |
| mgc_time | MinorGC time | ms | 492 ms |
| fgc_count | FullGC count | Time | 1 time |
| fgc_time | FullGC time | ms | 20 ms |
| Storage management metric_use Example: heap_use |
Used capacity | Byte | 47959064 bytes |
| Storage management metric_init Example: heap_init |
Initial capacity | Byte | 67108864 bytes |
| Storage management metric_commit Example: heap_commit |
Comitted capacity | Byte | 106573824 bytes |
| Storage management metric_max Example: heap_max |
Maximum capacity | Byte | 259522560 bytes |
Memory Management Metric
| Memory management metric | Illustration |
|---|---|
| heap | Heap |
| noheap | Non-heap |
| code | Code cache |
| eden | Neo-Eden |
| surv | Neo-survior |
| old | Old |
| perm | Permanent |
OpenTSDB Storage Metric
The JVM data are stored in OpenTSDB in the metric format of ‘jvm.metric name’. Metric names include the ones in the Custom metrics.
Value of instid in tags shall be http(s)://ip:port. pgid represents AppBase path---AppHome path, e.g. intsid:http://10.10.37.44:8080 and pgid:/app/tomcat7---/app/tomcat7
Tips: Values of all tags are required to be escaped into the valid characters of opensdb. For instance, ':’ shall be escaped into ' \u003a '