KV store stats
These provide various low-level stats and timings from the underlying KV storage system and useful to understand various states of the storage system.
The following stats are available for all database engine:
| Stat | Description |
|---|---|
| open | Number of database open operations |
| close | Number of database close operations |
| readTime | Time spent in read operations |
| readSize | Size of data in read operations |
| writeTime | Time spent in write operations |
| writeSize | Size of data in write operations |
| delete | Time spent in delete() calls |
The following stats are available for the CouchStore database engine:
| Stat | Description |
|---|---|
| backend_type | Type of backend database engine |
| commit | Time spent in CouchStore commit operation |
| commitRetry | Time spent in retry of commit operation |
| numLoadedVb | Number of Vbuckets loaded into memory |
| numCommitRetry | Number of commit retry |
| lastCommDocs | Number of docs in the last commit |
| failure_set | Number of failed set operation |
| failure_get | Number of failed get operation |
| failure_vbset | Number of failed vbucket set operation |
| save_documents | Time spent in CouchStore save documents operation |