Overview munin-monitoring.org demo.munin-monitoring.org
memory

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

memory • system

Graph Information

Field Internal name Type Warn Crit Info
cache cached gauge     Parked file data (file content) cache.
active active gauge     Memory recently used. Not reclaimed unless absolutely necessary.
committed committed gauge     The amount of memory allocated to programs. Overcommitting is normal, but may indicate memory leaks.
inactive inactive gauge     Memory not currently used.
vmalloc_used vmalloc_used gauge     'VMalloc' (kernel) memory used
page_tables page_tables gauge     Memory used to map between virtual and physical memory addresses.
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.
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.
swap swap gauge     Swap space used.
slab_cache slab gauge     Memory used by the kernel (major users are caches like inode, dentry, etc).
apps apps gauge     Memory used by user-space applications.
shmem shmem gauge     Shared Memory (SYSV SHM segments, tmpfs).
mapped mapped gauge     All mmap()ed pages.

Column 1

Column 2