mirror of https://gitee.com/bigwinds/arangodb
558 lines
21 KiB
C++
558 lines
21 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 2004-2013 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 triAGENS GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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/// @author Copyright 2012-2013, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#include "statistics.h"
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#include "BasicsC/locks.h"
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using namespace triagens::basics;
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using namespace std;
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#ifdef TRI_USE_SPIN_LOCK_STATISTICS
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#define STATISTICS_TYPE TRI_spin_t
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#define STATISTICS_INIT TRI_InitSpin
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#define STATISTICS_DESTROY TRI_DestroySpin
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#define STATISTICS_LOCK TRI_LockSpin
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#define STATISTICS_UNLOCK TRI_UnlockSpin
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#else
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#define STATISTICS_TYPE TRI_mutex_t
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#define STATISTICS_INIT TRI_InitMutex
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#define STATISTICS_DESTROY TRI_DestroyMutex
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#define STATISTICS_LOCK TRI_LockMutex
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#define STATISTICS_UNLOCK TRI_UnlockMutex
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#endif
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// -----------------------------------------------------------------------------
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// --SECTION-- private request statistics variables
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup Statistics
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief lock for lists
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////////////////////////////////////////////////////////////////////////////////
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static STATISTICS_TYPE RequestListLock;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief free list
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////////////////////////////////////////////////////////////////////////////////
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static TRI_statistics_list_t RequestFreeList;
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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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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/// @addtogroup Statistics
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/// @{
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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 = NULL;
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STATISTICS_LOCK(&RequestListLock);
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if (RequestFreeList._first != NULL) {
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statistics = (TRI_request_statistics_t*) RequestFreeList._first;
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RequestFreeList._first = RequestFreeList._first->_next;
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}
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STATISTICS_UNLOCK(&RequestListLock);
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return statistics;
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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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STATISTICS_LOCK(&RequestListLock);
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// check 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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TotalTimeDistribution->addFigure(totalTime);
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double requestTime = statistics->_requestEnd - statistics->_requestStart;
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RequestTimeDistribution->addFigure(requestTime);
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if (statistics->_queueStart != 0.0 && statistics->_queueEnd != 0.0) {
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double queueTime = statistics->_queueEnd - statistics->_queueStart;
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QueueTimeDistribution->addFigure(queueTime);
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}
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BytesSentDistribution->addFigure(statistics->_sentBytes);
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BytesReceivedDistribution->addFigure(statistics->_receivedBytes);
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}
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// clear statistics and put back an the free list
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memset(statistics, 0, sizeof(TRI_request_statistics_t));
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if (RequestFreeList._first == NULL) {
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RequestFreeList._first = (TRI_statistics_entry_t*) statistics;
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RequestFreeList._last = (TRI_statistics_entry_t*) statistics;
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}
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else {
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RequestFreeList._last->_next = (TRI_statistics_entry_t*) statistics;
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RequestFreeList._last = (TRI_statistics_entry_t*) statistics;
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}
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RequestFreeList._last->_next = 0;
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STATISTICS_UNLOCK(&RequestListLock);
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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& bytesSent,
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StatisticsDistribution& bytesReceived) {
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STATISTICS_LOCK(&RequestListLock);
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totalTime = *TotalTimeDistribution;
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requestTime = *RequestTimeDistribution;
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queueTime = *QueueTimeDistribution;
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bytesSent = *BytesSentDistribution;
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bytesReceived = *BytesReceivedDistribution;
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STATISTICS_UNLOCK(&RequestListLock);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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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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/// @addtogroup Statistics
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief lock for lists
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////////////////////////////////////////////////////////////////////////////////
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static STATISTICS_TYPE ConnectionListLock;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief free list
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////////////////////////////////////////////////////////////////////////////////
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static TRI_statistics_list_t ConnectionFreeList;
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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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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/// @addtogroup Statistics
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/// @{
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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 = 0;
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STATISTICS_LOCK(&ConnectionListLock);
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if (ConnectionFreeList._first != NULL) {
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statistics = (TRI_connection_statistics_t*) ConnectionFreeList._first;
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ConnectionFreeList._first = ConnectionFreeList._first->_next;
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}
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STATISTICS_UNLOCK(&ConnectionListLock);
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return statistics;
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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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STATISTICS_LOCK(&ConnectionListLock);
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if (statistics->_http) {
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if (statistics->_connStart != 0) {
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if (statistics->_connEnd == 0) {
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HttpConnections.incCounter();
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}
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else {
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HttpConnections.decCounter();
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double totalTime = statistics->_connEnd - statistics->_connStart;
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ConnectionTimeDistribution->addFigure(totalTime);
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}
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}
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}
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// clear statistics and put back an the free list
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memset(statistics, 0, sizeof(TRI_connection_statistics_t));
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if (ConnectionFreeList._first == NULL) {
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ConnectionFreeList._first = (TRI_statistics_entry_t*) statistics;
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ConnectionFreeList._last = (TRI_statistics_entry_t*) statistics;
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}
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else {
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ConnectionFreeList._last->_next = (TRI_statistics_entry_t*) statistics;
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ConnectionFreeList._last = (TRI_statistics_entry_t*) statistics;
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}
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ConnectionFreeList._last->_next = 0;
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STATISTICS_UNLOCK(&ConnectionListLock);
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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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StatisticsDistribution& connectionTime) {
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STATISTICS_LOCK(&ConnectionListLock);
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httpConnections = HttpConnections;
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connectionTime = *ConnectionTimeDistribution;
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STATISTICS_UNLOCK(&ConnectionListLock);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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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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/// @addtogroup Statistics
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/// @{
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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 = 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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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- private functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup Statistics
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief fills a linked list
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////////////////////////////////////////////////////////////////////////////////
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static void FillStatisticsList (TRI_statistics_list_t* list, size_t element, size_t count) {
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size_t i;
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TRI_statistics_entry_t* entry;
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entry = (TRI_statistics_entry_t*) TRI_Allocate(TRI_CORE_MEM_ZONE, element, true);
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list->_first = entry;
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list->_last = entry;
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for (i = 1; i < count; ++i) {
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entry = (TRI_statistics_entry_t*) TRI_Allocate(TRI_CORE_MEM_ZONE, element, true);
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list->_last->_next = entry;
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list->_last = entry;
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destroys a linked list
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////////////////////////////////////////////////////////////////////////////////
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void TRI_DestroyStatisticsList (TRI_statistics_list_t* list) {
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TRI_statistics_entry_t* entry = list->_first;
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while (entry != NULL) {
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TRI_statistics_entry_t* next = entry->_next;
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TRI_Free(TRI_CORE_MEM_ZONE, entry);
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entry = next;
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}
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list->_first = list->_last = NULL;
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}
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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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/// @addtogroup Statistics
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/// @{
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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 conntections
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////////////////////////////////////////////////////////////////////////////////
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StatisticsCounter HttpConnections;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief connection time distribution vector
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////////////////////////////////////////////////////////////////////////////////
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StatisticsVector ConnectionTimeDistributionVector;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief total time distribution
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////////////////////////////////////////////////////////////////////////////////
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StatisticsDistribution* ConnectionTimeDistribution;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief request time distribution vector
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////////////////////////////////////////////////////////////////////////////////
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StatisticsVector RequestTimeDistributionVector;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief total time distribution
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////////////////////////////////////////////////////////////////////////////////
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StatisticsDistribution* TotalTimeDistribution;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief request time distribution
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////////////////////////////////////////////////////////////////////////////////
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StatisticsDistribution* RequestTimeDistribution;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief queue time distribution
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////////////////////////////////////////////////////////////////////////////////
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StatisticsDistribution* QueueTimeDistribution;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief bytes sent distribution vector
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////////////////////////////////////////////////////////////////////////////////
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StatisticsVector BytesSentDistributionVector;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief bytes sent distribution
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////////////////////////////////////////////////////////////////////////////////
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StatisticsDistribution* BytesSentDistribution;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief bytes received distribution vector
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////////////////////////////////////////////////////////////////////////////////
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StatisticsVector BytesReceivedDistributionVector;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief bytes received distribution
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////////////////////////////////////////////////////////////////////////////////
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StatisticsDistribution* BytesReceivedDistribution;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief global server statistics
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////////////////////////////////////////////////////////////////////////////////
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TRI_server_statistics_t ServerStatistics;
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- public functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup Statistics
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/// @{
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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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#ifdef TRI_ENABLE_HIRES_FIGURES
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double TRI_StatisticsTime () {
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struct timespec tp;
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clock_gettime(CLOCK_REALTIME, &tp);
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return tp.tv_sec + (tp.tv_nsec / 1000000000.0);
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}
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#else
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double TRI_StatisticsTime () {
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return TRI_microtime();
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}
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#endif
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////////////////////////////////////////////////////////////////////////////////
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/// @brief module init function
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////////////////////////////////////////////////////////////////////////////////
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void TRI_InitialiseStatistics () {
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ServerStatistics._startTime = TRI_microtime();
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#if TRI_ENABLE_FIGURES
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static size_t const QUEUE_SIZE = 1000;
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// .............................................................................
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// sets up the statistics
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// .............................................................................
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ConnectionTimeDistributionVector << (0.1) << (1.0) << (60.0);
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BytesSentDistributionVector << (250) << (1000) << (2 * 1000) << (5 * 1000) << (10 * 1000);
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BytesReceivedDistributionVector << (250) << (1000) << (2 * 1000) << (5 * 1000) << (10 * 1000);
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#ifdef TRI_ENABLE_HIRES_FIGURES
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RequestTimeDistributionVector << (0.0001) << (0.05) << (0.1) << (0.2) << (0.5) << (1.0);
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#else
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RequestTimeDistributionVector << (0.01) << (0.05) << (0.1) << (0.2) << (0.5) << (1.0);
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#endif
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ConnectionTimeDistribution = new StatisticsDistribution(ConnectionTimeDistributionVector);
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TotalTimeDistribution = new StatisticsDistribution(RequestTimeDistributionVector);
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RequestTimeDistribution = new StatisticsDistribution(RequestTimeDistributionVector);
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QueueTimeDistribution = new StatisticsDistribution(RequestTimeDistributionVector);
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BytesSentDistribution = new StatisticsDistribution(BytesSentDistributionVector);
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BytesReceivedDistribution = new StatisticsDistribution(BytesReceivedDistributionVector);
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// .............................................................................
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// generate the request statistics queue
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// .............................................................................
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RequestFreeList._first = RequestFreeList._last = NULL;
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FillStatisticsList(&RequestFreeList, sizeof(TRI_request_statistics_t), QUEUE_SIZE);
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STATISTICS_INIT(&RequestListLock);
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// .............................................................................
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// generate the connection statistics queue
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// .............................................................................
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ConnectionFreeList._first = ConnectionFreeList._last = NULL;
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FillStatisticsList(&ConnectionFreeList, sizeof(TRI_connection_statistics_t), QUEUE_SIZE);
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STATISTICS_INIT(&ConnectionListLock);
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#endif
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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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#if TRI_ENABLE_FIGURES
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delete ConnectionTimeDistribution;
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delete TotalTimeDistribution;
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delete RequestTimeDistribution;
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delete QueueTimeDistribution;
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delete BytesSentDistribution;
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delete BytesReceivedDistribution;
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TRI_DestroyStatisticsList(&RequestFreeList);
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TRI_DestroyStatisticsList(&ConnectionFreeList);
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#endif
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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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}\\|/// @addtogroup\\|/// @page\\|// --SECTION--\\|/// @\\}"
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// End:
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