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Graph information

This graph shows what the machine uses memory for.

Field Internal name Type Warning Critical Info
apps apps gauge Memory used by user-space applications.
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.
slab_cache slab gauge Memory used by the kernel (major users are caches like inode, dentry, etc).
cache cached gauge Parked file data (file content) cache.
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.
inactive inactive gauge Memory not currently used.
committed committed gauge The amount of memory allocated to programs. Overcommitting is normal, but may indicate memory leaks.
active active gauge Memory recently used. Not reclaimed unless absolutely necessary.
vmalloc_used vmalloc_used gauge 'VMalloc' (kernel) memory used
mapped mapped gauge All mmap()ed pages.
This page was generated by Munin version 2.0.6-4+deb7u4 at 2024-07-21 05:55:26+0200 (CEST) with MunStrap template.