The mem plugin collects system memory metrics.
For a more complete explanation of the difference between used and
actual_used RAM, see Linux ate my ram.
Global configuration options
In addition to the plugin-specific configuration settings, plugins support
additional global and plugin configuration settings. These settings are used to
modify metrics, tags, and field or create aliases and configure ordering, etc.
See the CONFIGURATION.md for more details.
Configuration
# Read metrics about memory usage
[[inputs.mem]]
# no configuration
Metrics
Available fields are dependent on platform.
- mem
- fields:
- active (integer, Darwin, FreeBSD, Linux, OpenBSD)
- available (integer)
- available_percent (float)
- buffered (integer, FreeBSD, Linux)
- cached (integer, FreeBSD, Linux, OpenBSD)
- commit_limit (integer, Linux)
- committed_as (integer, Linux)
- dirty (integer, Linux)
- free (integer, Darwin, FreeBSD, Linux, OpenBSD)
- high_free (integer, Linux)
- high_total (integer, Linux)
- huge_pages_free (integer, Linux)
- huge_page_size (integer, Linux)
- huge_pages_total (integer, Linux)
- inactive (integer, Darwin, FreeBSD, Linux, OpenBSD)
- laundry (integer, FreeBSD)
- low_free (integer, Linux)
- low_total (integer, Linux)
- mapped (integer, Linux)
- page_tables (integer, Linux)
- shared (integer, Linux)
- slab (integer, Linux)
- sreclaimable (integer, Linux)
- sunreclaim (integer, Linux)
- swap_cached (integer, Linux)
- swap_free (integer, Linux)
- swap_total (integer, Linux)
- total (integer)
- used (integer)
- used_percent (float)
- vmalloc_chunk (integer, Linux)
- vmalloc_total (integer, Linux)
- vmalloc_used (integer, Linux)
- wired (integer, Darwin, FreeBSD, OpenBSD)
- write_back (integer, Linux)
- write_back_tmp (integer, Linux)
Example Output
mem active=9299595264i,available=16818249728i,available_percent=80.41654254645131,buffered=2383761408i,cached=13316689920i,commit_limit=14751920128i,committed_as=11781156864i,dirty=122880i,free=1877688320i,high_free=0i,high_total=0i,huge_page_size=2097152i,huge_pages_free=0i,huge_pages_total=0i,inactive=7549939712i,low_free=0i,low_total=0i,mapped=416763904i,page_tables=19787776i,shared=670679040i,slab=2081071104i,sreclaimable=1923395584i,sunreclaim=157675520i,swap_cached=1302528i,swap_free=4286128128i,swap_total=4294963200i,total=20913917952i,used=3335778304i,used_percent=15.95004011996231,vmalloc_chunk=0i,vmalloc_total=35184372087808i,vmalloc_used=0i,wired=0i,write_back=0i,write_back_tmp=0i 1574712869000000000