VM System Info Collector

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VM System Information Collector

Collects Erlang VM metrics using :erlang.system_info/1.

Exported metrics

  • erlang_vm_ets_limit
    Type: gauge.
    The maximum number of ETS tables allowed. 
  • erlang_vm_logical_processors
    Type: gauge.
    The detected number of logical processors configured in the system. 
  • erlang_vm_logical_processors_available
    Type: gauge.
    The detected number of logical processors available to the Erlang runtime system. 
  • erlang_vm_logical_processors_online
    Type: gauge.
    The detected number of logical processors online on the system. 
  • erlang_vm_ports
    Type: gauge.
    The number of ports currently existing at the local node. 
  • erlang_vm_port_limit
    Type: gauge.
    The maximum number of simultaneously existing ports at the local node. 
  • erlang_vm_processes
    Type: gauge.
    The number of processes currently existing at the local node. 
  • erlang_vm_process_limit
    Type: gauge.
    The maximum number of simultaneously existing processes at the local node. 
  • erlang_vm_schedulers
    Type: gauge.
    The number of scheduler threads used by the emulator. 
  • erlang_vm_schedulers_online
    Type: gauge.
    The number of schedulers online. 
  • erlang_vm_smp_support
    Type: boolean.
    1 if the emulator has been compiled with SMP support, otherwise 0. 
  • erlang_vm_threads
    Type: boolean.
    1 if the emulator has been compiled with thread support, otherwise 0. 
  • erlang_vm_thread_pool_size
    Type: gauge.
    The number of async threads in the async thread pool used for asynchronous driver calls. 
  • erlang_vm_time_correction
    Type: boolean.
    1 if time correction is enabled, otherwise 0.

Configuration

Metrics exported by this collector can be configured via :vm_system_info_collector_metrics key of :prometheus app environment.

Options are the same as Item parameter values for :erlang.system_info/1:

  • :ets_limit for erlang_vm_ets_limit;
  • :logical_processors for erlang_vm_logical_processors;
  • :logical_processors_available for erlang_vm_logical_processors_available;
  • :logical_processors_online for erlang_vm_logical_processors_online;
  • :port_count for erlang_vm_ports;
  • :port_limit for erlang_vm_port_limit;
  • :process_count for erlang_vm_processes;
  • :process_limit for erlang_vm_process_limit;
  • :schedulers for erlang_vm_schedulers;
  • :schedulers_online for erlang_vm_schedulers_online;
  • :smp_support for erlang_vm_smp_support;
  • :threads for erlang_threads;
  • :thread_pool_size for erlang_vm_thread_pool_size;
  • :time_correction for erlang_vm_time_correction. By default all metrics are enabled.