Instance metrics-OpenSearch(Open Search)-阿里云帮助中心

Procedure

Click Instance Metrics to view monitoring metrics for the instance. Select a time range from the drop-down list to view detailed metrics for that period.

The page displays the ha3 metrics dashboard, which includes panels such as SQL_QRS, SQL_Searcher, QRS, Searcher-normal, Searcher_phase1, Searcher_phase2, and Searcher_rt_build. Click a panel to expand it and view its metrics.

Metrics

SQL_QRS

Metric	Description
QPS	The number of SQL queries per second (QPS), including queries that return an error.
EmptyQps	The QPS of normal queries or standalone phase-1 queries on the QRS that return empty results.
ErrorQps	The number of SQL queries per second (QPS) that return an error.
GetPlanErrorQps	The number of queries per second (QPS) that fail to generate a usable iquan plan.
SessionLatency	Total time spent on an SQL query, including time spent waiting in the thread pool and processing the query.
ProcessLatency	Time taken to process an SQL query.
Sql plan parsing latency	Time spent parsing the SQL plan.
Number of returned results	Number of results returned by the query.
Length of returned results	Total length of the results returned by the query.

SQL_Searcher

Metric	Description
qps	Number of SQL queries per second (QPS) processed by the Searcher worker, including those that return an error.
Searcher query latency	Time taken for the Searcher worker to process a query.

QRS

Metric	Description
qps	The number of queries per second (QPS) processed by the QRS worker.
one-phase qps	The number of phase-1 queries per second (QPS) processed by the QRS worker.
two-phase qps	The number of phase-2 queries per second (QPS) processed by the QRS worker.
proc_cpu	CPU utilization of the QRS worker.
proc_mem_rss	Amount of memory used by the QRS worker.
mem	Memory usage of the QRS worker.
qrsSessionLatencyNormal	The processing latency for normal, standalone phase-1, or standalone phase-2 queries on the QRS, measured from when a session is dequeued until its processing is complete.
waitLatencyPhase1	The time the QRS worker waits for an asynchronous response from downstream nodes during a phase-1 query.
waitLatencyPhase2	The time the QRS worker waits for an asynchronous response from downstream nodes during a phase-2 query.
returnCountNormal	The number of normal results returned by the QRS worker.
resultLenNormal	The length of normal query results.
emptyQps	The number of queries per second (QPS) that return empty results.
syntaxErrorQps	The number of requests per second (QPS) that fail on the QRS worker due to syntax errors, such as a clause parsing failure or an invalid result format.
RequestPoolWaitTime	The time a session waits in the worker queue on the QRS worker.
multiCallLatency	The latency of multiCall invocations on the QRS worker.
early_terminator_qps	The number of queries per second (QPS) that are terminated early on the QRS worker.
worker_status	Status of the QRS worker. A value of 1 indicates normal, and 0 indicates abnormal.
processerrorqps	The number of requests per second (QPS) that fail on the QRS worker due to processing errors. This includes errors such as a non-existent Processor or ProcessorChain, and excludes syntax errors.

Searcher-normal

Metric	Description
proc_Cpu	CPU utilization of the Searcher worker.
proc_Mem_Rss	Amount of memory used by the Searcher worker.
proc_Mem_Use_Ratio	Memory usage of the Searcher worker.
disk_use	Amount of disk space used by the Searcher worker.
disk_use_ratio	Disk usage of the Searcher worker.
partitionDocCount	The number of documents stored on the Searcher worker.
partitionMemoryQuotaUse	The memory quota used by the index on the Searcher worker.
incIndexMemoryUse	The memory used by the incremental index.
oldInMemorySegmentMemoryUse	The memory used by in-memory segments that have not yet been released.
SegmentCount	The number of segments on the Searcher worker.
requestPoolWaitTime	The time a query request waits in the request pool of the Searcher worker.
worker_status	Status of the Searcher worker. A value of 1 indicates normal, and 0 indicates abnormal.
deletedDocCount	The number of documents deleted from the Searcher worker.

Searcher_phase1

Metric	Description
inQpsPhase1	The number of phase-1 queries per second (QPS) processed by the Searcher worker.
searcherProcessLatencyPhase1	The processing latency for phase-1 queries on the Searcher worker.
sessionLatencyPhase1	The total session latency for phase-1 queries on the Searcher worker.
beforeSearchLatency	The time taken for query initialization on the Searcher worker.
rankLatency	Time taken for the initial sorting stage (rough sorting) on the Searcher worker.
rerankLatency	The time taken for fine sorting on the Searcher worker.
matchCount	The exact number of matching documents found on the Searcher worker.
matchDocSize	The actual number of matched documents returned by the Searcher worker during phase 1.
seekCount	The exact total seek count on the Searcher worker.
seekDocCount	The number of documents sought on the Searcher worker.
phase1EmptyQps	The QPS of phase-1 queries that return empty results on the Searcher worker.
phrase1TimeoutQps	The QPS of phase-1 queries that time out on the Searcher worker.
cacheHitRatio	The full-cache hit ratio on the Searcher worker.
cacheGetNum	The QPS of lookups in the full cache on the Searcher worker.
cachePutNum	The QPS of insertions into the full cache on the Searcher worker.
cacheItemNum	The number of items in the full cache on the Searcher worker.
extraRankCount	The number of documents processed in the final ranking stage on the Searcher worker.
extraRankLatency	The time taken for the final ranking stage on the Searcher worker.
aitheta_seek_count	The aitheta seek count on the Searcher worker.
aitheta_recall_ratio	The aitheta recall ratio on the Searcher worker.
aitheta_seek_latency	The aitheta seek latency on the Searcher worker.
after_search_latency	Time elapsed from the completion of ranking to the return of the final result on the Searcher worker.
request_pool_wait_time	The time a query request waits in the request pool of the Searcher worker.

Searcher_phase2

Metric	Description
inQpsPhase2	The number of phase-2 queries per second (QPS) processed by the Searcher worker.
searcherProcessLatencyPhase2	The processing latency for phase-2 queries on the Searcher worker.
sessionLatencyPhase2	The session latency for phase-2 queries on the Searcher worker.
blockCacheHitRatio	The hit ratio of the block cache on the Searcher worker.
fetchSummaryLatency	The time taken to fetch summaries on the Searcher worker.
extractSummaryLatency	Time taken to extract the dynamic summary on the Searcher worker.

Searcher_rt_build

Metric	Description
addQps	The QPS of add document operations pushed via API to the Searcher worker.
deleteQPS	The QPS of delete document operations pushed via API to the Searcher worker.
buildQps	The QPS of real-time index build operations on the Searcher worker.
end2EndLatency_API	The end-to-end latency for data pushed via API.
end2EndLatency_default	Default end-to-end latency for data pushed via API.
swiftReadDelay	The Swift read delay on the Searcher worker.
rtIndexMemoryUse	The amount of real-time memory used by the Searcher worker.
rtIndexMemoryUseRatio	The real-time memory usage of the Searcher worker.
dumpSegmentLatency	The time taken to dump real-time data segments during a batch switch on the Searcher worker.
processedDocSize	Total size of documents processed by the Searcher worker.