Service graphs
Graph Information
This graph shows what the machine uses memory for.
Field |
Internal name |
Type |
Warn |
Crit |
Info |
apps |
apps |
gauge |
|
|
Memory used by user-space applications. |
slab_cache |
slab |
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. |
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. |
active |
active |
gauge |
|
|
Memory recently used. Not reclaimed unless absolutely necessary. |
inactive |
inactive |
gauge |
|
|
Memory not currently used. |