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Module prometheus_vm_system_info_collector

Collects Erlang VM metrics using erlang:system_info/1 .

Behaviours: prometheus_collector.

Description

Exported metrics

  • erlang_vm_dirty_cpu_schedulers
    Type: gauge.
    The number of scheduler dirty CPU scheduler threads used by the emulator.

  • erlang_vm_dirty_cpu_schedulers_online
    Type: gauge.
    The number of dirty CPU scheduler threads online.

  • erlang_vm_dirty_io_schedulers
    Type: gauge.
    The number of scheduler dirty I/O scheduler threads used by the emulator.

  • 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_port_count
    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_process_count
    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.

  • erlang_vm_wordsize_bytes
    Type: gauge.
    The size of Erlang term words in bytes.

  • erlang_vm_atom_count
    Type: gauge.
    The number of atom currently existing at the local node.

  • erlang_vm_atom_limit
    Type: gauge.
    The maximum number of simultaneously existing atom at the local node.

  • erlang_vm_allocators
    Type: gauge.
    Allocated (carriers_size) and used (blocks_size) memory for the different allocators in the VM. See erts_alloc(3).

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_port_count.

  • port_limit for erlang_vm_port_limit.

  • process_count for erlang_vm_process_count.

  • 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.

  • wordsize_bytes for erlang_vm_wordsize_bytes.

  • atom_count for erlang_vm_atom_count.

  • atom_limit for erlang_vm_atom_limit.

  • allocators for erlang_vm_allocators.

By default all metrics are enabled.