61 lines
2.7 KiB
C++
61 lines
2.7 KiB
C++
/*
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* ReadLatencySamples.cpp
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2025 Apple Inc. and the FoundationDB project authors
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*
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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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*/
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#include "fdbserver/ReadLatencySamples.h"
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#include "fdbserver/Knobs.h"
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namespace {
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std::unique_ptr<LatencySample> createSample(std::string_view prefix, std::string_view metricName, UID serverId) {
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return std::make_unique<LatencySample>(fmt::format("{}{}", prefix, metricName),
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serverId,
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SERVER_KNOBS->LATENCY_METRICS_LOGGING_INTERVAL,
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SERVER_KNOBS->LATENCY_SKETCH_ACCURACY,
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/*skipTraceOnSilentInterval=*/true);
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}
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} // namespace
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ReadLatencySamples::Entry::Entry(std::string_view prefix, UID serverId)
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: samples({ createSample(prefix, "ReadLatencyMetrics", serverId),
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createSample(prefix, "GetKeyMetrics", serverId),
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createSample(prefix, "GetValueMetrics", serverId),
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createSample(prefix, "GetRangeMetrics", serverId),
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createSample(prefix, "ReadVersionWaitMetrics", serverId),
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createSample(prefix, "ReadQueueWaitMetrics", serverId),
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createSample(prefix, "KVGetRangeMetrics", serverId),
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createSample(prefix, "GetMappedRangeMetrics", serverId),
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createSample(prefix, "GetMappedRangeRemoteMetrics", serverId),
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createSample(prefix, "GetMappedRangeLocalMetrics", serverId) }) {}
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ReadLatencySamples::ReadLatencySamples(UID serverId)
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: aggregate("", serverId), perType({ Entry("Eager", serverId),
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Entry("Fetch", serverId),
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Entry("LowPriority", serverId),
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Entry("NormalPriority", serverId),
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Entry("HighPriority", serverId) }) {}
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void ReadLatencySamples::sample(double latency, SampleType sampleType, Optional<ReadType> readType) {
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aggregate.samples[sampleType]->addMeasurement(latency);
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if (readType.present()) {
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perType[readType.get()].samples[sampleType]->addMeasurement(latency);
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}
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}
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