V8js

V8 JS Attributes

Describes V8 JS Engine Runtime related attributes.

Attribute	Type	Description	Examples	Stability
v8js.gc.type	string	The type of garbage collection.	major; minor; incremental
v8js.heap.space.name	string	The name of the space type of heap memory. [1]	new_space; old_space; code_space

[1]: Value can be retrieved from value space_name of v8.getHeapSpaceStatistics()

v8js.gc.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
incremental	Incremental (Incremental Marking).
major	Major (Mark Sweep Compact).
minor	Minor (Scavenge).
weakcb	Weak Callbacks (Process Weak Callbacks).

v8js.heap.space.name 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
code_space	Code memory space.
large_object_space	Large object memory space.
map_space	Map memory space.
new_space	New memory space.
old_space	Old memory space.