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feat(Core/UpdateTime): Improve diff time measurement. (#18387)

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* feat(Core/UpdateTime): Improve diff time measurement.

* Codestyle fixes
This commit is contained in:
Anton Popovichenko
2024-02-25 16:08:15 +01:00
committed by GitHub
parent 1768e4a633
commit 34598bfccf
3 changed files with 66 additions and 2 deletions
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53
src/server/game/Time/UpdateTime.cpp
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@@ -19,6 +19,8 @@
#include "Config.h"
#include "Log.h"
#include "Timer.h"
#include <algorithm>
#include <iterator>
// create instance
WorldUpdateTime sWorldUpdateTime;
@@ -71,8 +73,34 @@ uint32 UpdateTime::GetLastUpdateTime() const
return _updateTimeDataTable[_updateTimeTableIndex != 0 ? _updateTimeTableIndex - 1 : _updateTimeDataTable.size() - 1];
}
uint32 UpdateTime::GetDatasetSize() const
{
return _updateTimeDataTable[_updateTimeDataTable.size() - 1] == 0 ? _updateTimeTableIndex : _orderedUpdateTimeDataTable.size();
}
uint32 UpdateTime::GetPercentile(uint8 p)
{
if (_needsReorder)
SortUpdateTimeDataTable();
// Calculate the index of the element corresponding to the percentile
double index = (double(p) / 100.0) * (GetDatasetSize() - 1);
// If the index is an integer, return the value at that index
if (index == floor(index))
return _orderedUpdateTimeDataTable[index];
// Otherwise, perform linear interpolation
int lowerIndex = floor(index);
int upperIndex = ceil(index);
double fraction = index - lowerIndex;
return _orderedUpdateTimeDataTable[lowerIndex] * (1 - fraction) + _orderedUpdateTimeDataTable[upperIndex] * fraction;
}
void UpdateTime::UpdateWithDiff(uint32 diff)
{
_needsReorder = true;
_totalUpdateTime = _totalUpdateTime - _updateTimeDataTable[_updateTimeTableIndex] + diff;
_updateTimeDataTable[_updateTimeTableIndex] = diff;
@@ -100,6 +128,26 @@ void UpdateTime::RecordUpdateTimeReset()
_recordedTime = GetTimeMS();
}
void UpdateTime::SortUpdateTimeDataTable()
{
if (!_needsReorder)
return;
auto endUpdateTable = _updateTimeDataTable.end();
if (!_updateTimeDataTable[_updateTimeDataTable.size() - 1])
endUpdateTable = std::next(_updateTimeDataTable.begin(), _updateTimeTableIndex);
std::copy(_updateTimeDataTable.begin(), endUpdateTable, _orderedUpdateTimeDataTable.begin());
auto endOrderedUpdateTable = _orderedUpdateTimeDataTable.end();
if (!_updateTimeDataTable[_updateTimeDataTable.size() - 1])
endOrderedUpdateTable = std::next(_orderedUpdateTimeDataTable.begin(), _updateTimeTableIndex);
std::sort(_orderedUpdateTimeDataTable.begin(), endOrderedUpdateTable);
_needsReorder = false;
}
void WorldUpdateTime::LoadFromConfig()
{
_recordUpdateTimeInverval = Milliseconds(sConfigMgr->GetOption<uint32>("RecordUpdateTimeDiffInterval", 60000));
@@ -117,7 +165,10 @@ void WorldUpdateTime::RecordUpdateTime(Milliseconds gameTimeMs, uint32 diff, uin
{
if (GetMSTimeDiff(_lastRecordTime, gameTimeMs) > _recordUpdateTimeInverval)
{
LOG_INFO("time.update", "Update time diff: {}. Players online: {}.", GetAverageUpdateTime(), sessionCount);
LOG_INFO("time.update", "Last {} diffs summary with {} players online:", GetDatasetSize(), sessionCount);
LOG_INFO("time.update", " - Mean: {};", GetAverageUpdateTime());
LOG_INFO("time.update", " - Median: {};", GetPercentile(50));
LOG_INFO("time.update", " - Percentiles (95, 99, max): {}, {}, {}.", GetPercentile(95), GetPercentile(99), GetPercentile(100));
_lastRecordTime = gameTimeMs;
}
}