45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
/*
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* TransactionTagCounter.h
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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 2013-2022 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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#pragma once
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#include "fdbclient/StorageServerInterface.h"
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#include "fdbclient/TagThrottle.actor.h"
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#include "fdbserver/Knobs.h"
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class TransactionTagCounter {
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TransactionTagMap<int64_t> intervalCounts;
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int64_t intervalTotalSampledCount = 0;
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TransactionTag busiestTag;
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int64_t busiestTagCount = 0;
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double intervalStart = 0;
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std::vector<StorageQueuingMetricsReply::TagInfo> previousBusiestTags;
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UID thisServerID;
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Reference<EventCacheHolder> busiestReadTagEventHolder;
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public:
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TransactionTagCounter(UID thisServerID);
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static int64_t costFunction(int64_t bytes) { return bytes / SERVER_KNOBS->READ_COST_BYTE_FACTOR + 1; }
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void addRequest(Optional<TagSet> const& tags, int64_t bytes);
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void startNewInterval();
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std::vector<StorageQueuingMetricsReply::TagInfo> const& getBusiestTags() const { return previousBusiestTags; }
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};
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