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51689d965d
This adds timers around several query-relevant code blocks. For now, the query timer stats are only logged for queries initiated through the UI. In other cases (rule evaluations), the stats are simply thrown away. My hope is that this helps us understand where queries spend time, especially in cases where they sometimes hang for unusual amounts of time.
82 lines
2.2 KiB
Go
82 lines
2.2 KiB
Go
// Copyright 2013 Prometheus Team
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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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TotalViewBuildingTime
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ViewRequestBuildTime
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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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ViewQueueTime
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ViewDiskPreparationTime
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ViewScanJobsTime
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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 TotalViewBuildingTime:
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return "Total view building time"
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case ViewRequestBuildTime:
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return "View request building 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 ViewQueueTime:
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return "View queue wait time"
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case ViewScanJobsTime:
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return "View building job scanning 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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