Monitoring Springboot 2.0 Tomcat server Thread utilization

Question

I have started my springboot application with following tomcat parameters

-Dserver.tomcat.max-threads=400
-Dserver.tomcat.max-connections=4000

I want to monitor busy thread and busy connection size?

Is there a built-in solution inside springboot? Otherwise Do I need to get mbeans?

Found similar question but solution is not given yet.

Thanks.

it should be like that https://stackoverflow.com/questions/43347451/monitor-spring-embedded-tomcat-metrics — Ahmet Karakaya, Sep 01 '19 at 18:45

Wachira · Answer 1 · 2020-06-29T03:44:55.153

At first, I use Spring Boot Actuator and Micrometer. But It does not show tomcat thread utilization. So I configured the application.yml like this.

server:
  port: 3200
  address: 0.0.0.0
  tomcat:
    max-threads: 4000
    mbeanregistry:
      enabled: true

I set server.tomcat.mbeanregistry.enabled to true. Then Tomcat threads utilization is shown in /actuator/metrics.

This is my output.

{
  "names": [
    "http.server.requests",
    "http.server.requests.histogram",
    "jvm.buffer.count",
    "jvm.buffer.memory.used",
    "jvm.buffer.total.capacity",
    "jvm.classes.loaded",
    "jvm.classes.unloaded",
    "jvm.gc.live.data.size",
    "jvm.gc.max.data.size",
    "jvm.gc.memory.allocated",
    "jvm.gc.memory.promoted",
    "jvm.gc.pause",
    "jvm.memory.committed",
    "jvm.memory.max",
    "jvm.memory.used",
    "jvm.threads.daemon",
    "jvm.threads.live",
    "jvm.threads.peak",
    "jvm.threads.states",
    "logback.events",
    "process.cpu.usage",
    "process.files.max",
    "process.files.open",
    "process.start.time",
    "process.uptime",
    "system.cpu.count",
    "system.cpu.usage",
    "system.load.average.1m",
    "thread.pool.core.size",
    "thread.pool.max.size",
    "thread.pool.pool.size",
    "thread.pool.thread.count",
    "tomcat.cache.access",
    "tomcat.cache.hit",
    "tomcat.global.error",
    "tomcat.global.received",
    "tomcat.global.request",
    "tomcat.global.request.max",
    "tomcat.global.sent",
    "tomcat.servlet.error",
    "tomcat.servlet.request",
    "tomcat.servlet.request.max",
    "tomcat.sessions.active.current",
    "tomcat.sessions.active.max",
    "tomcat.sessions.alive.max",
    "tomcat.sessions.created",
    "tomcat.sessions.expired",
    "tomcat.sessions.rejected",
    "tomcat.threads.busy",
    "tomcat.threads.config.max",
    "tomcat.threads.current"
  ]
}

@AhmetKarakaya I added an output to my answer. Is it what you want to see? — Wachira, Jun 29 '20 at 03:46
@Wachira I have enabled this property in my spring boot application.properties. Is there something else to be done? I am still not seeing these metrics in the output. — Mahesh H Viraktamath, Jul 14 '21 at 09:04

score 0 · Answer 2 · answered Aug 20 '19 at 11:28

0

One easy to do this is by using Spring Actuator with Micrometer on top of it. You get instant JMX metrics and you can also declare your own custom ones.

answered Aug 20 '19 at 11:28

BogdanSucaciu

884
6
13

score 0 · Answer 3 · answered Aug 20 '19 at 11:32

0

You can use Spring Boot Actuator (/metrics endpoint) that gives information about memory, heap, processors, threads, classes loaded, classes unloaded, thread pools, etc.

For example, this endpoint returns:

"threads.peak" : ...,
"threads.daemon" : ...,
"threads" : ...,

Also, you can get a thread dump in case if you need to by using /threaddump endpoint.

answered Aug 20 '19 at 11:32

Iana Mykhailenko

553
5
15

but this gives all threads in applications, but I need to focus on tomcat threads? – Ahmet Karakaya Aug 20 '19 at 11:36

Monitoring Springboot 2.0 Tomcat server Thread utilization

3 Answers3