JVM (Micrometer)

JVM (Micrometer)

A dashboard for Micrometer instrumented applications (Java, Spring Boot, Micronaut).

Features

• JVM memory
• Process memory (provided by micrometer-jvm-extras)
• CPU-Usage, Load, Threads, Thread States, File Descriptors, Log Events
• JVM Memory Pools (Heap, Non-Heap)
• Garbage Collection/Pressure
• Classloading
• Direct-/Mapped-Buffer
• minimalist I/O Overview
  • HTTP - Rate, Errors, Duration
  • TOMCAT/JETTY - Utilisation

Note

Instead of using the job tag to distinct different applications, this dashboard makes use of a common tag called application applied to every metric.

In a Spring Boot setting, this could look like this:

java Copy

@Bean
MeterRegistryCustomizer<MeterRegistry> configurer(
    @Value("${spring.application.name}") String applicationName) {
    return (registry) -> registry.config().commonTags("application", applicationName);
}

Or since Spring Boot 2.1 / Micrometer 1.1.0 with a property:

properties Copy

management.metrics.tags.application=${spring.application.name}

Compatibility

• micrometer:1.1.0+
• micrometer-jvm-extras:0.1.2+

Changelog

• 2023-05-04 (Revision 10)
  • added GC Pressure panel in JVM Misc section
  • changed process average CPU usage query from 1h to 15m
  • reworked Buffer Pool panels
    • combined buffer usage and buffer count into one panel
    • fixed buffer detection (where hardcoded to “direct” and “mapped” before)
  • removed JVM Memory Pool selection dropdown
• 2019-11-03 (Revision 9)
  • adjusted “JVM Process Memory” panel to micrometer-jvm-extras:0.2.0 (removed ‘pss’ and ‘swappss’)
  • dropped micrometer:1.0.x query fallbacks from PromQL
  • minor polish
• 2019-04-15 (Revision 8)
  • fixed PromQL query for Java11 non-heap areas
  • GC allocation/promotion unit changed to bytes/s (from byte)
  • moved process memory metrics to dedicated panel
• 2018-11-14 (Revision 7)
  • updated some metric queries (with fallbacks) due to meter name changes from Micrometer 1.0.x to 1.1.x
  • added Thread States panel

Contact

For suggestions or bug reports, please contact me on Twitter or contact/DM mweirauch in the Micrometer Slack.