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vmem.md

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vmem

Monitor Type: vmem (Source)

Accepts Endpoints: No

Multiple Instances Allowed: No

Overview

Collects information specific to the virtual memory subsystem of the kernel. For general memory statistics, see the memory monitor.

On Linux hosts, this monitor relies on the /proc filesystem. If the underlying host's /proc file system is mounted somewhere other than /proc please specify the path using the top level configuration procPath.

procPath: /proc
monitors:
 - type: vmem

Configuration

To activate this monitor in the Smart Agent, add the following to your agent config:

monitors:  # All monitor config goes under this key
 - type: vmem
   ...  # Additional config

For a list of monitor options that are common to all monitors, see Common Configuration.

Config option Required Type Description
counterRefreshInterval no int64 (Windows Only) The frequency that wildcards in counter paths should be expanded and how often to refresh counters from configuration. This is expressed as a duration. (default: 60s)
printValid no bool (Windows Only) Print out the configurations that match available performance counters. This used for debugging. (default: false)

Metrics

These are the metrics available for this monitor. Metrics that are categorized as container/host (default) are in bold and italics in the list below.

  • vmpage.swap.in_per_second (gauge)
    (Windows Only)
  • vmpage.swap.out_per_second (gauge)
    (Windows Only)
  • vmpage.swap.total.per_second (gauge)
    (Windows Only)
  • vmpage_faults.majflt (cumulative)
    (Linux Only) Number of major page faults on the system
  • vmpage_faults.minflt (cumulative)
    (Linux Only) Number of minor page faults on the system
  • vmpage_io.memory.in (cumulative)
    (Linux Only) Page Ins for Memory
  • vmpage_io.memory.out (cumulative)
    (Linux Only) Page Outs for Memory
  • vmpage_io.swap.in (cumulative)
    (Linux Only) Page Ins for Swap
  • vmpage_io.swap.out (cumulative)
    (Linux Only) Page Outs for Swap
  • vmpage_number.free_pages (gauge)
    (Linux Only) Number of free memory pages
  • vmpage_number.mapped (gauge)
    (Linux Only) Number of mapped pages
  • vmpage_number.shmem_pmdmapped (gauge)
    (Linux Only) The amount of shared (shmem/tmpfs) memory backed by huge pages

Non-default metrics (version 4.7.0+)

To emit metrics that are not default, you can add those metrics in the generic monitor-level extraMetrics config option. Metrics that are derived from specific configuration options that do not appear in the above list of metrics do not need to be added to extraMetrics.

To see a list of metrics that will be emitted you can run agent-status monitors after configuring this monitor in a running agent instance.