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memory

Graphs in same category
entropy open files open inodes irqstats swap cpu uptime forks load interrupts memory memsimple installed load extended

memory • system

Graph Information

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

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