semantic-conventions/docs/attributes-registry/system.md

System

• CPU attributes
• Memory attributes
• Paging attributes
• Filesystem attributes
• Network attributes
• Process attributes
• Deprecated System Attributes

Attribute	Type	Description	Examples	Stability
system.device	string	The device identifier	(identifier)

CPU attributes

Attribute	Type	Description	Examples	Stability
system.cpu.logical_number	int	The logical CPU number [0..n-1]	1
system.cpu.state	string	The state of the CPU	idle; interrupt

system.cpu.state has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.

Value	Description	Stability
user	user
system	system
nice	nice
idle	idle
iowait	iowait
interrupt	interrupt
steal	steal

Memory attributes

Attribute	Type	Description	Examples	Stability
system.memory.state	string	The memory state	free; cached

system.memory.state has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.

Value	Description	Stability
used	used
free	free
shared	shared
buffers	buffers
cached	cached

Paging attributes

Attribute	Type	Description	Examples	Stability
system.paging.direction	string	The paging access direction	in
system.paging.state	string	The memory paging state	free
system.paging.type	string	The memory paging type	minor

system.paging.direction MUST be one of the following:

Value	Description	Stability
in	in
out	out

system.paging.state MUST be one of the following:

Value	Description	Stability
used	used
free	free

system.paging.type MUST be one of the following:

Value	Description	Stability
major	major
minor	minor

Filesystem attributes

Attribute	Type	Description	Examples	Stability
system.filesystem.mode	string	The filesystem mode	rw, ro
system.filesystem.mountpoint	string	The filesystem mount path	/mnt/data
system.filesystem.state	string	The filesystem state	used
system.filesystem.type	string	The filesystem type	ext4

system.filesystem.state MUST be one of the following:

Value	Description	Stability
used	used
free	free
reserved	reserved

system.filesystem.type has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.

Value	Description	Stability
fat32	fat32
exfat	exfat
ntfs	ntfs
refs	refs
hfsplus	hfsplus
ext4	ext4

Network attributes

Attribute	Type	Description	Examples	Stability
system.network.state	string	A stateless protocol MUST NOT set this attribute	close_wait

system.network.state MUST be one of the following:

Value	Description	Stability
close	close
close_wait	close_wait
closing	closing
delete	delete
established	established
fin_wait_1	fin_wait_1
fin_wait_2	fin_wait_2
last_ack	last_ack
listen	listen
syn_recv	syn_recv
syn_sent	syn_sent
time_wait	time_wait

Process attributes

Attribute	Type	Description	Examples	Stability
system.process.status	string	The process state, e.g., Linux Process State Codes	running

system.process.status has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.

Value	Description	Stability
running	running
sleeping	sleeping
stopped	stopped
defunct	defunct

Deprecated System Attributes

Attribute	Type	Description	Examples	Stability
system.processes.status	string	Deprecated, use system.process.status instead.	running	Replaced by system.process.status.

system.processes.status has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.

Value	Description	Stability
running	running
sleeping	sleeping
stopped	stopped
defunct	defunct