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memory swap cpu users irqstats entropy irqstats memory open inodes open files entropy swap users interrupts cpu uptime load load uptime open inodes

memory • system

Graph Information

Field Internal name Type Warn Crit Info
cache cached gauge     Parked file data (file content) cache.
slab_cache slab gauge     Memory used by the kernel (major users are caches like inode, dentry, etc).
swap swap gauge     Swap space used.
apps apps gauge     Memory used by user-space applications.
mapped mapped gauge     All mmap()ed pages.
inactive inactive gauge     Memory not currently used.
vmalloc_used vmalloc_used gauge     'VMalloc' (kernel) memory used
active active gauge     Memory recently used. Not reclaimed unless absolutely necessary.
swap_cache swap_cache gauge     A piece of memory that keeps track of pages that have been fetched from swap but not yet been modified.
committed committed gauge     The amount of memory allocated to programs. Overcommitting is normal, but may indicate memory leaks.
buffers buffers gauge     Block device (e.g. harddisk) cache. Also where "dirty" blocks are stored until written.
unused free gauge     Wasted memory. Memory that is not used for anything at all.
page_tables page_tables gauge     Memory used to map between virtual and physical memory addresses.

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