Linux ksm metricset
The KSM module reports data from Kernel Samepage Merging. In order to take advantage of KSM, applications must use the madvise system call to mark memory regions for merging. KSM is not enabled on all distros, and KSM status is set with the CONFIG_KSM kernel flag.
For a description of each field in the metricset, see the exported fields section.
Here is an example document generated by this metricset:
{
"@timestamp": "2017-10-12T08:05:34.853Z",
"event": {
"dataset": "linux.ksm",
"duration": 115000,
"module": "linux"
},
"linux": {
"ksm": {
"stats": {
"pages_shared": 100,
"pages_sharing": 10,
"pages_unshared": 0,
"pages_volatile": 0,
"full_scans": 2000,
"stable_node_chains": 0,
"stable_node_dups": 0
}
}
},
"metricset": {
"name": "ksm",
"period": 10000
},
"service": {
"type": "linux"
}
}