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9ab1f6c690
A high number of concurrent queries can slow each other down so that none of them is reasonbly responsive. This commit limits the number of queries being concurrently executed.
79 lines
2.2 KiB
Go
79 lines
2.2 KiB
Go
// Copyright 2013 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package stats
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// QueryTiming identifies the code area or functionality in which time is spent
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// during a query.
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type QueryTiming int
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// Query timings.
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const (
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TotalEvalTime QueryTiming = iota
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ResultSortTime
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JSONEncodeTime
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PreloadTime
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TotalQueryPreparationTime
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InnerViewBuildingTime
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InnerEvalTime
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ResultAppendTime
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QueryAnalysisTime
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GetValueAtTimeTime
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GetBoundaryValuesTime
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GetRangeValuesTime
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ExecQueueTime
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ViewDiskPreparationTime
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ViewDataExtractionTime
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ViewDiskExtractionTime
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)
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// Return a string represenation of a QueryTiming identifier.
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func (s QueryTiming) String() string {
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switch s {
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case TotalEvalTime:
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return "Total eval time"
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case ResultSortTime:
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return "Result sorting time"
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case JSONEncodeTime:
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return "JSON encoding time"
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case PreloadTime:
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return "Query preloading time"
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case TotalQueryPreparationTime:
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return "Total query preparation time"
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case InnerViewBuildingTime:
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return "Inner view building time"
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case InnerEvalTime:
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return "Inner eval time"
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case ResultAppendTime:
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return "Result append time"
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case QueryAnalysisTime:
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return "Query analysis time"
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case GetValueAtTimeTime:
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return "GetValueAtTime() time"
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case GetBoundaryValuesTime:
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return "GetBoundaryValues() time"
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case GetRangeValuesTime:
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return "GetRangeValues() time"
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case ExecQueueTime:
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return "Exec queue wait time"
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case ViewDiskPreparationTime:
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return "View building disk preparation time"
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case ViewDataExtractionTime:
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return "Total view data extraction time"
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case ViewDiskExtractionTime:
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return "View disk data extraction time"
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default:
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return "Unknown query timing"
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}
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}
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