2.9 KiB
2.9 KiB
| title | list_title | description | aliases | menu | weight | flux/v0.x/tags | related | introduced | ||||||||||||
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| Flux profiler package | profiler package | The Flux `profiler` package provides performance profiling tools for Flux queries and operations. Import the `profiler` package. |
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0.82.0 |
The Flux profiler package provides performance profiling tools for Flux queries and operations.
Import the profiler package:
import "profiler"
Options
The profiler package includes the following options:
import "profiler"
option profiler.enabledProfilers = ["query", "operator"]
enabledProfilers
List of Flux profilers to enable.
Available profilers
query
The query profiler provides statistics about the execution of an entire Flux script.
When enabled, results returned by yield()
include a table with the following columns:
- TotalDuration: total query duration in nanoseconds.
- CompileDuration: number of nanoseconds spent compiling the query.
- QueueDuration: number of nanoseconds spent queueing.
- RequeueDuration: number fo nanoseconds spent requeueing.
- PlanDuration: number of nanoseconds spent planning the query.
- ExecuteDuration: number of nanoseconds spent executing the query.
- Concurrency: number of goroutines allocated to process the query.
- MaxAllocated: maximum number of bytes the query allocated.
- TotalAllocated: total number of bytes the query allocated (includes memory that was freed and then used again).
- RuntimeErrors: error messages returned during query execution.
- flux/query-plan: Flux query plan.
- influxdb/scanned-values: value scanned by InfluxDB.
- influxdb/scanned-bytes: number of bytes scanned by InfluxDB.
operator
The operator profiler output statistics about each operation in a query.
Operations executed in the storage tier
return as a single operation.
When the operator profile is enabled, results returned by yield()
include a table with a row for each operation and the following columns:
- Type: operation type
- Label: operation name
- Count: total number of times the operation executed
- MinDuration: minimum duration of the operation in nanoseconds
- MaxDuration: maximum duration of the operation in nanoseconds
- DurationSum: total duration of all operation executions in nanoseconds
- MeanDuration: average duration of all operation executions in nanoseconds