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entropy memory load open inodes raspberrypi open files interrupts swap cpu uptime rpi temp snmp 192 168 1 254 memory snmp 192 168 1 254 winmem snmp 192 168 1 254 df ram snmp 192 168 1 254 users snmp 192 168 1 254 uptime

memory • system

Graph Information

Field Internal name Type Warn Crit Info
apps apps gauge     Memory used by user-space applications.
swap swap gauge     Swap space used.
free free gauge     Wasted memory. Memory that is not used for anything at all.
vmalloc_used vmalloc_used gauge     'VMalloc' (kernel) memory used.
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.
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.
mapped mapped gauge     All mmap()ed pages.
slab_cache slab_cache gauge     Memory used by the kernel (major users are caches like inode, dentry, etc).
shmem shmem gauge     Shared Memory (SYSV SHM segments, tmpfs).
cache cached gauge     Parked file data (file content) cache.
inactive inactive gauge     Memory not currently used.
page_tables page_tables gauge     Memory used to map between virtual and physical memory addresses.

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