mirror of https://gitee.com/bigwinds/arangodb
594 lines
22 KiB
C++
594 lines
22 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief statistics basics
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2014 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
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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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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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/// @author Copyright 2014, ArangoDB GmbH, Cologne, Germany
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/// @author Copyright 2012-2014, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#include "statistics.h"
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#include "Basics/Mutex.h"
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#include "Basics/MutexLocker.h"
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#include "Basics/threads.h"
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#include <boost/lockfree/queue.hpp>
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using namespace triagens::basics;
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using namespace std;
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// -----------------------------------------------------------------------------
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// --SECTION-- private request statistics variables
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// -----------------------------------------------------------------------------
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static size_t const QUEUE_SIZE = 1000;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief lock for request statistics data
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////////////////////////////////////////////////////////////////////////////////
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static triagens::basics::Mutex RequestDataLock;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief the request statistics queue
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////////////////////////////////////////////////////////////////////////////////
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static boost::lockfree::queue<TRI_request_statistics_t*, boost::lockfree::capacity<QUEUE_SIZE>> RequestFreeList;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief the request statistics queue for finished requests
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////////////////////////////////////////////////////////////////////////////////
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static boost::lockfree::queue<TRI_request_statistics_t*, boost::lockfree::capacity<QUEUE_SIZE>> RequestFinishedList;
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// -----------------------------------------------------------------------------
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// --SECTION-- private request statistics functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief processes a statistics block
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////////////////////////////////////////////////////////////////////////////////
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static void ProcessRequestStatistics (TRI_request_statistics_t* statistics) {
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{
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MUTEX_LOCKER(RequestDataLock);
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TRI_TotalRequestsStatistics.incCounter();
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if (statistics->_async) {
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TRI_AsyncRequestsStatistics.incCounter();
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}
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TRI_MethodRequestsStatistics[(int) statistics->_requestType].incCounter();
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// check that the request was completely received and transmitted
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if (statistics->_readStart != 0.0 && statistics->_writeEnd != 0.0) {
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double totalTime = statistics->_writeEnd - statistics->_readStart;
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TRI_TotalTimeDistributionStatistics->addFigure(totalTime);
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double requestTime = statistics->_requestEnd - statistics->_requestStart;
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TRI_RequestTimeDistributionStatistics->addFigure(requestTime);
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double queueTime = 0.0;
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if (statistics->_queueStart != 0.0 && statistics->_queueEnd != 0.0) {
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queueTime = statistics->_queueEnd - statistics->_queueStart;
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TRI_QueueTimeDistributionStatistics->addFigure(queueTime);
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}
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double ioTime = totalTime - requestTime - queueTime;
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if (ioTime >= 0.0) {
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TRI_IoTimeDistributionStatistics->addFigure(ioTime);
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}
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TRI_BytesSentDistributionStatistics->addFigure(statistics->_sentBytes);
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TRI_BytesReceivedDistributionStatistics->addFigure(statistics->_receivedBytes);
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}
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}
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// clear statistics
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statistics->reset();
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// put statistics item back onto the freelist
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#ifdef TRI_ENABLE_MAINTAINER_MODE
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bool ok = RequestFreeList.push(statistics);
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TRI_ASSERT(ok);
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#else
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RequestFreeList.push(statistics);
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#endif
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief processes finished statistics block
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////////////////////////////////////////////////////////////////////////////////
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static size_t ProcessAllRequestStatistics () {
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TRI_request_statistics_t* statistics = nullptr;
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size_t count = 0;
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while (RequestFinishedList.pop(statistics)) {
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if (statistics != nullptr) {
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ProcessRequestStatistics(statistics);
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++count;
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}
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}
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return count;
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- public request statistics functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief gets a new statistics block
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////////////////////////////////////////////////////////////////////////////////
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TRI_request_statistics_t* TRI_AcquireRequestStatistics () {
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TRI_request_statistics_t* statistics = nullptr;
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if (TRI_ENABLE_STATISTICS && RequestFreeList.pop(statistics)) {
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return statistics;
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}
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return nullptr;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief releases a statistics block
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////////////////////////////////////////////////////////////////////////////////
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void TRI_ReleaseRequestStatistics (TRI_request_statistics_t* statistics) {
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if (statistics == nullptr) {
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return;
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}
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if (! statistics->_ignore) {
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#ifdef TRI_ENABLE_MAINTAINER_MODE
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bool ok = RequestFinishedList.push(statistics);
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TRI_ASSERT(ok);
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#else
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RequestFinishedList.push(statistics);
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#endif
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}
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else {
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statistics->reset();
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#ifdef TRI_ENABLE_MAINTAINER_MODE
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bool ok = RequestFreeList.push(statistics);
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TRI_ASSERT(ok);
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#else
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RequestFreeList.push(statistics);
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#endif
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief fills the current statistics
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////////////////////////////////////////////////////////////////////////////////
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void TRI_FillRequestStatistics (StatisticsDistribution& totalTime,
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StatisticsDistribution& requestTime,
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StatisticsDistribution& queueTime,
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StatisticsDistribution& ioTime,
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StatisticsDistribution& bytesSent,
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StatisticsDistribution& bytesReceived) {
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MUTEX_LOCKER(RequestDataLock);
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totalTime = *TRI_TotalTimeDistributionStatistics;
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requestTime = *TRI_RequestTimeDistributionStatistics;
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queueTime = *TRI_QueueTimeDistributionStatistics;
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ioTime = *TRI_IoTimeDistributionStatistics;
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bytesSent = *TRI_BytesSentDistributionStatistics;
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bytesReceived = *TRI_BytesReceivedDistributionStatistics;
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- private connection statistics variables
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief lock for connection data
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////////////////////////////////////////////////////////////////////////////////
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static triagens::basics::Mutex ConnectionDataLock;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief free list
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////////////////////////////////////////////////////////////////////////////////
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static boost::lockfree::queue<TRI_connection_statistics_t*, boost::lockfree::capacity<QUEUE_SIZE>> ConnectionFreeList;
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// -----------------------------------------------------------------------------
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// --SECTION-- public connection statistics functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief gets a new statistics block
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////////////////////////////////////////////////////////////////////////////////
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TRI_connection_statistics_t* TRI_AcquireConnectionStatistics () {
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TRI_connection_statistics_t* statistics = nullptr;
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if (TRI_ENABLE_STATISTICS && ConnectionFreeList.pop(statistics)) {
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return statistics;
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}
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return nullptr;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief releases a statistics block
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////////////////////////////////////////////////////////////////////////////////
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void TRI_ReleaseConnectionStatistics (TRI_connection_statistics_t* statistics) {
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if (statistics == nullptr) {
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return;
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}
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{
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MUTEX_LOCKER(ConnectionDataLock);
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if (statistics->_http) {
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if (statistics->_connStart != 0.0) {
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if (statistics->_connEnd == 0.0) {
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TRI_HttpConnectionsStatistics.incCounter();
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}
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else {
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TRI_HttpConnectionsStatistics.decCounter();
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double totalTime = statistics->_connEnd - statistics->_connStart;
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TRI_ConnectionTimeDistributionStatistics->addFigure(totalTime);
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}
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}
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}
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}
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// clear statistics
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statistics->reset();
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// put statistics item back onto the freelist
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#ifdef TRI_ENABLE_MAINTAINER_MODE
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bool ok = ConnectionFreeList.push(statistics);
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TRI_ASSERT(ok);
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#else
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ConnectionFreeList.push(statistics);
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#endif
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief fills the current statistics
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////////////////////////////////////////////////////////////////////////////////
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void TRI_FillConnectionStatistics (StatisticsCounter& httpConnections,
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StatisticsCounter& totalRequests,
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vector<StatisticsCounter>& methodRequests,
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StatisticsCounter& asyncRequests,
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StatisticsDistribution& connectionTime) {
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MUTEX_LOCKER(ConnectionDataLock);
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httpConnections = TRI_HttpConnectionsStatistics;
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totalRequests = TRI_TotalRequestsStatistics;
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methodRequests = TRI_MethodRequestsStatistics;
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asyncRequests = TRI_AsyncRequestsStatistics;
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connectionTime = *TRI_ConnectionTimeDistributionStatistics;
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- public server statistics functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief gets the global server statistics
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////////////////////////////////////////////////////////////////////////////////
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TRI_server_statistics_t TRI_GetServerStatistics () {
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TRI_server_statistics_t server;
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server._startTime = TRI_ServerStatistics._startTime;
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server._uptime = TRI_microtime() - server._startTime;
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return server;
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- private variables
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief shutdown flag
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////////////////////////////////////////////////////////////////////////////////
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static std::atomic<bool> Shutdown;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief thread used for statistics
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////////////////////////////////////////////////////////////////////////////////
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static TRI_thread_t StatisticsThread;
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// -----------------------------------------------------------------------------
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// --SECTION-- private functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief checks for new statistics and process them
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////////////////////////////////////////////////////////////////////////////////
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static void StatisticsQueueWorker (void* data) {
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while (! Shutdown && TRI_ENABLE_STATISTICS) {
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size_t count = ProcessAllRequestStatistics();
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if (count == 0) {
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usleep(100 * 1000);
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}
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else if (count < 10) {
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usleep(10 * 1000);
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}
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else if (count < 100) {
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usleep(1 * 1000);
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}
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}
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delete TRI_ConnectionTimeDistributionStatistics;
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delete TRI_TotalTimeDistributionStatistics;
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delete TRI_RequestTimeDistributionStatistics;
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delete TRI_QueueTimeDistributionStatistics;
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delete TRI_IoTimeDistributionStatistics;
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delete TRI_BytesSentDistributionStatistics;
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delete TRI_BytesReceivedDistributionStatistics;
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{
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TRI_request_statistics_t* entry = nullptr;
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while (RequestFreeList.pop(entry)) {
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delete entry;
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}
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}
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{
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TRI_request_statistics_t* entry = nullptr;
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while (RequestFinishedList.pop(entry)) {
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delete entry;
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}
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}
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{
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TRI_connection_statistics_t* entry = nullptr;
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while (ConnectionFreeList.pop(entry)) {
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delete entry;
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}
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}
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- public variable
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief statistics enabled flags
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////////////////////////////////////////////////////////////////////////////////
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bool TRI_ENABLE_STATISTICS = true;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief number of http connections
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////////////////////////////////////////////////////////////////////////////////
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StatisticsCounter TRI_HttpConnectionsStatistics;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief total number of requests
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////////////////////////////////////////////////////////////////////////////////
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StatisticsCounter TRI_TotalRequestsStatistics;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief number of requests by HTTP method
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////////////////////////////////////////////////////////////////////////////////
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std::vector<StatisticsCounter> TRI_MethodRequestsStatistics;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief number of async requests
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////////////////////////////////////////////////////////////////////////////////
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StatisticsCounter TRI_AsyncRequestsStatistics;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief connection time distribution vector
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////////////////////////////////////////////////////////////////////////////////
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StatisticsVector TRI_ConnectionTimeDistributionVectorStatistics;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief total time distribution
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////////////////////////////////////////////////////////////////////////////////
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StatisticsDistribution* TRI_ConnectionTimeDistributionStatistics;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief request time distribution vector
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////////////////////////////////////////////////////////////////////////////////
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StatisticsVector TRI_RequestTimeDistributionVectorStatistics;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief total time distribution
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////////////////////////////////////////////////////////////////////////////////
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StatisticsDistribution* TRI_TotalTimeDistributionStatistics;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief request time distribution
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////////////////////////////////////////////////////////////////////////////////
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StatisticsDistribution* TRI_RequestTimeDistributionStatistics;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief queue time distribution
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////////////////////////////////////////////////////////////////////////////////
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StatisticsDistribution* TRI_QueueTimeDistributionStatistics;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief i/o distribution
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////////////////////////////////////////////////////////////////////////////////
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StatisticsDistribution* TRI_IoTimeDistributionStatistics;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief bytes sent distribution vector
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////////////////////////////////////////////////////////////////////////////////
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StatisticsVector TRI_BytesSentDistributionVectorStatistics;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief bytes sent distribution
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////////////////////////////////////////////////////////////////////////////////
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StatisticsDistribution* TRI_BytesSentDistributionStatistics;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief bytes received distribution vector
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////////////////////////////////////////////////////////////////////////////////
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StatisticsVector TRI_BytesReceivedDistributionVectorStatistics;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief bytes received distribution
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////////////////////////////////////////////////////////////////////////////////
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StatisticsDistribution* TRI_BytesReceivedDistributionStatistics;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief global server statistics
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////////////////////////////////////////////////////////////////////////////////
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TRI_server_statistics_t TRI_ServerStatistics;
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// -----------------------------------------------------------------------------
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// --SECTION-- public functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief gets the current wallclock time
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////////////////////////////////////////////////////////////////////////////////
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double TRI_StatisticsTime () {
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return TRI_microtime();
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- module initialization
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief module init function
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////////////////////////////////////////////////////////////////////////////////
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void TRI_InitializeStatistics () {
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TRI_ServerStatistics._startTime = TRI_microtime();
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// .............................................................................
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// sets up the statistics
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// .............................................................................
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TRI_ConnectionTimeDistributionVectorStatistics << (0.1) << (1.0) << (60.0);
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TRI_BytesSentDistributionVectorStatistics << (250) << (1000) << (2 * 1000) << (5 * 1000) << (10 * 1000);
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TRI_BytesReceivedDistributionVectorStatistics << (250) << (1000) << (2 * 1000) << (5 * 1000) << (10 * 1000);
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TRI_RequestTimeDistributionVectorStatistics << (0.01) << (0.05) << (0.1) << (0.2) << (0.5) << (1.0);
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TRI_ConnectionTimeDistributionStatistics = new StatisticsDistribution(TRI_ConnectionTimeDistributionVectorStatistics);
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TRI_TotalTimeDistributionStatistics = new StatisticsDistribution(TRI_RequestTimeDistributionVectorStatistics);
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TRI_RequestTimeDistributionStatistics = new StatisticsDistribution(TRI_RequestTimeDistributionVectorStatistics);
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TRI_QueueTimeDistributionStatistics = new StatisticsDistribution(TRI_RequestTimeDistributionVectorStatistics);
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TRI_IoTimeDistributionStatistics = new StatisticsDistribution(TRI_RequestTimeDistributionVectorStatistics);
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TRI_BytesSentDistributionStatistics = new StatisticsDistribution(TRI_BytesSentDistributionVectorStatistics);
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TRI_BytesReceivedDistributionStatistics = new StatisticsDistribution(TRI_BytesReceivedDistributionVectorStatistics);
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// initialize counters for all HTTP request types
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TRI_MethodRequestsStatistics.clear();
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for (int i = 0; i < ((int) triagens::rest::HttpRequest::HTTP_REQUEST_ILLEGAL) + 1; ++i) {
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StatisticsCounter c;
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TRI_MethodRequestsStatistics.emplace_back(c);
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}
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// .............................................................................
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// generate the request statistics queue
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// .............................................................................
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for (size_t i = 0; i < QUEUE_SIZE; ++i) {
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auto entry = new TRI_request_statistics_t;
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#ifdef TRI_ENABLE_MAINTAINER_MODE
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bool ok = RequestFreeList.push(entry);
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TRI_ASSERT(ok);
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#else
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RequestFreeList.push(entry);
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#endif
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}
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// .............................................................................
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// generate the connection statistics queue
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// .............................................................................
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for (size_t i = 0; i < QUEUE_SIZE; ++i) {
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auto entry = new TRI_connection_statistics_t;
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#ifdef TRI_ENABLE_MAINTAINER_MODE
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bool ok = ConnectionFreeList.push(entry);
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TRI_ASSERT(ok);
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#else
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ConnectionFreeList.push(entry);
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#endif
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}
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// .............................................................................
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// use a separate thread for statistics
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// .............................................................................
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Shutdown = false;
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TRI_StartThread(&StatisticsThread, nullptr, "[statistics]", StatisticsQueueWorker, 0);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief shut down statistics
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////////////////////////////////////////////////////////////////////////////////
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void TRI_ShutdownStatistics (void) {
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Shutdown = true;
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int res TRI_UNUSED = TRI_JoinThread(&StatisticsThread);
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TRI_ASSERT(res == 0);
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- END-OF-FILE
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// -----------------------------------------------------------------------------
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "/// @brief\\|/// {@inheritDoc}\\|/// @page\\|// --SECTION--\\|/// @\\}"
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// End:
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