[DOCS] PMM-9288 - Extended metrics and labels for MongoDB QAN #3752
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JiriCtvrtka
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Mar 10, 2025
| - `keys_examined`: number of index entries scanned | ||
| - `nreturned`: number of documents returned by the query | ||
| - `response_length`: size of the response in bytes | ||
| - `millis`: query execution time in milliseconds |
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Millis are same like "Query Time" in this case. No need to mention it.
JiriCtvrtka
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Mar 10, 2025
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| #### Additional MongoDB QAN metrics | ||
| The following metrics are now available in QAN for MongoDB queries: |
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Could we mention that these are in "details" for query?
JiriCtvrtka
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Mar 10, 2025
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| - `docs_examined`: number of documents scanned during query execution | ||
| - `keys_examined`: number of index entries scanned | ||
| - `nreturned`: number of documents returned by the query | ||
| - `response_length`: size of the response in bytes | ||
| - `millis`: query execution time in milliseconds | ||
| - `locks_global_acquire_count_read_shared`: global read lock acquisition count | ||
| - `locks_global_acquire_count_write_shared`: global write lock acquisition count | ||
| - `locks_database_acquire_count_read_shared`: database read lock acquisition count | ||
| - `locks_database_acquire_wait_count_read_shared`: database read lock wait count | ||
| - `locks_database_time_acquiring_micros_read_shared`: time spent acquiring database locks in microseconds | ||
| - `locks_collection_acquire_count_read_shared`: collection read lock acquisition count | ||
| - `storage_bytes_read`: amount of data read from storage in bytes | ||
| - `storage_time_reading_micros`: time spent reading from storage in microseconds |
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Can we use for each metric it's humanized name from here https://github.com/percona/grafana-dashboards/pull/1656/files#diff-179300d38c32860677d134b1586267e655e28b77c0f7a06018f139f04b8a6925R1115?
catalinaadam
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Nailya
approved these changes
Mar 10, 2025
JiriCtvrtka
reviewed
Mar 11, 2025
JiriCtvrtka
reviewed
Mar 11, 2025
JiriCtvrtka
reviewed
Mar 11, 2025
| - **Username** | ||
| - **Service Type** | ||
| - **Node Type** | ||
| - **City** |
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There are not real filters, maybe leftover?
JiriCtvrtka
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Mar 11, 2025
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| ### MongoDB-specific filter groups | ||
| - **Plan Summary**: filters queries by execution plan type (COLLSCAN, IXSCAN, etc.) to easily identify inefficient full collection scans | ||
| - **Client Application Name**: filters queries by the application name that generated them |
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This one is available for PG also
Co-authored-by: Jiří Čtvrtka <[email protected]>
Co-authored-by: Jiří Čtvrtka <[email protected]>
JiriCtvrtka
reviewed
Mar 11, 2025
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| - **City** | ||
| - **AZ** |
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Suggested change
| - **City** | |
| - **AZ** |
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PMM-0
Link to the Feature Build: SUBMODULES-0
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