74 lines
2.3 KiB
C++
74 lines
2.3 KiB
C++
/*
|
|
|
|
DISKSPD
|
|
|
|
Copyright(c) Microsoft Corporation
|
|
All rights reserved.
|
|
|
|
MIT License
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in all
|
|
copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
SOFTWARE.
|
|
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <vector>
|
|
|
|
class IoBucketizer
|
|
{
|
|
public:
|
|
IoBucketizer();
|
|
void Initialize(unsigned __int64 bucketDuration, size_t validBuckets);
|
|
|
|
size_t GetNumberOfValidBuckets() const;
|
|
unsigned int GetIoBucketCount(size_t bucketNumber) const;
|
|
double GetIoBucketMinDurationUsec(size_t bucketNumber) const;
|
|
double GetIoBucketMaxDurationUsec(size_t bucketNumber) const;
|
|
double GetIoBucketAvgDurationUsec(size_t bucketNumber) const;
|
|
double GetIoBucketDurationStdDevUsec(size_t bucketNumber) const;
|
|
void Add(unsigned __int64 ioCompletionTime, double ioDuration);
|
|
double GetStandardDeviationIOPS() const;
|
|
void Merge(const IoBucketizer& other);
|
|
private:
|
|
double _GetMeanIOPS() const;
|
|
|
|
struct IoBucket {
|
|
IoBucket() :
|
|
ulCount(0),
|
|
lfMinDuration(0),
|
|
lfMaxDuration(0),
|
|
lfSumDuration(0),
|
|
lfSumSqrDuration(0)
|
|
{
|
|
}
|
|
|
|
unsigned int ulCount;
|
|
double lfMinDuration;
|
|
double lfMaxDuration;
|
|
double lfSumDuration;
|
|
double lfSumSqrDuration;
|
|
};
|
|
|
|
unsigned __int64 _bucketDuration;
|
|
size_t _validBuckets;
|
|
size_t _totalBuckets;
|
|
std::vector<IoBucket> _vBuckets;
|
|
};
|