## `memstat` collector ```json "memstat": { "exclude_metrics": [ "mem_used" ] } ``` The `memstat` collector reads data from `/proc/meminfo` and outputs a handful **node** metrics. If a metric is not required, it can be excluded from forwarding it to the sink. Metrics: * `mem_total` * `mem_sreclaimable` * `mem_slab` * `mem_free` * `mem_buffers` * `mem_cached` * `mem_available` * `mem_shared` * `mem_active` * `mem_inactive` * `mem_dirty` * `mem_writeback` * `mem_anon_pages` * `mem_mapped` * `mem_vmalloc_total` * `mem_anon_hugepages` * `mem_shared_hugepages` * `mem_shared_pmd_mapped` * `mem_hugepages_total` * `mem_hugepages_free` * `mem_hugepages_reserved` * `mem_hugepages_surplus` * `mem_hugepages_size` * `mem_direct_mapped_4k` * `mem_direct_mapped_2m` * `mem_direct_mapped_4m` * `mem_direct_mapped_1g` * `mem_locked` * `mem_pagetables` * `mem_kernelstack` * `swap_total` * `swap_free` * `mem_used` = `mem_total` - (`mem_free` + `mem_buffers` + `mem_cached` + `mem_shared`)