monitor¶
Monitor methods calling stack traces.
F.Y.I
monitoris a persistent command, it never returns until you pressCtrl+Cto manually stop it;- the server runs the jobs in the background;
- injected monitoring code will become invalid automatically once the monitoring jobs being terminated;
- in theory, Arthas will not change any original behaviors but if it does, please do not hesitate to start an issue.
Properties monitored¶
| Property | Specification |
|---|---|
| timestamp | timestamp |
| class | Java class |
| method | constructor and regular methods |
| total | calling times |
| success | success count |
| fail | failure count |
| rt | average RT |
| fail-rate | failure ratio |
Parameters¶
| Name | Specification |
|---|---|
| class-pattern | pattern for the class name |
| method-pattern | pattern for the method name |
| [E] | turn on regex matching while the default is wildcard matching |
| [c:] | cycle of output with default value: 60 s |
Usage¶
$ monitor -c 5 com.alibaba.sample.petstore.web.store.module.screen.ItemList execute
Press Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:1) cost in 36 ms.
timestamp class method total success fail rt fail-rate
-----------------------------------------------------------------------------------------------------------------------------------
2015-12-17 10:56:40 com.alibaba.sample.petstore.web.store.module.screen.ItemList execute 10 10 0 2.00 0.00%
timestamp class method total success fail rt fail-rate
-----------------------------------------------------------------------------------------------------------------------------------
2015-12-17 10:56:45 com.alibaba.sample.petstore.web.store.module.screen.ItemList execute 11 11 0 2.18 0.00%
timestamp class method total success fail rt fail-rate
-----------------------------------------------------------------------------------------------------------------------------------
2015-12-17 10:56:50 com.alibaba.sample.petstore.web.store.module.screen.ItemList execute 0 0 0 0.00 0.00%