Presented By: Shatsman Yuri Leibovitz Amit Supervised By: Oved Itzhak Winter 2009/10 Networked...

Presented By:

Shatsman Yuri

Leibovitz Amit

Supervised By:

Oved Itzhak

Generic Enhancement to Application Dynamic Behavior

Monitoring

Winter 2009/10Networked Software Systems Lab, EE Department,

Technion – Israel Institute of Technology

2

IntroductionDesign

Sampling unit Algorithms Infrastructure GUI Entire system top-view

ResultsDemo

Presented by: Shatsman Yuri & Leibovitz Amit

Agenda

3Presented by: Shatsman Yuri & Leibovitz Amit

Background: Performance CountersProvide information on the dynamic behavior of

an application.Built-in standardized support in Windows.

The problem:The application’s developers choose what

information to expose, and it’s impossible to manipulate this data.

A system administrator might want to manipulate the data provided.

No built-in tool allows this behavior...

Introduction


Existing solutionA. Svetlit & D. Nasi, 2008 (supervised by Oved Itzhak).Problem with Rate counters due to implementation in

C# - a .NET language.

Our GoalsAllow the user to perform arbitrary manipulations on

existing performance data.Allow extensibility of the system to allow the user to

create personal algorithms. Implement a provider in a native language which could

determine when it is sampled.Wrap the entire system in a user friendly environment.

Introduction (cont.)

5

IntroductionDesign


ResultsDemo


Agenda


The system was divided into 3 units:Sampling unit

Does the bulk of the workThe link to the framework

Algorithms InfrastructureAllows extensibility of the

systemPerforms the manipulations

GUIP.A.TAllows management of the

entire system

Design

deployment Block Deployment

System Deployment (Components)

Operating System (Windows)

Our System

PDH

GUI

Sampeling Unit

«extensible»Algorithms

Registry

7

IntroductionDesign


ResultsDemo


Agenda


Consists of 3 componentsWorker DLLWrapper units

Provider DLLSampling Process

Design – Sampling Unitcmp Sampeling Unit

Sampling Unit

«library»Worker DLL

+ ClosePerformanceCounter() : DWORD+ CollectPerformaceData(LPDWORD, LPDWORD, LPVOID, LPWSTR) : DWORD+ OpenPerformanceCounter(LPWSTR) : DWORD+ Register(String, String) : DWORD+ Unregister(String) : DWORD

Trace

Prov ider DLL (Wrapper with minimal functionality)

+ SetDull() : void+ Open(LPWSTR) : void+ Collect(LPDWORD, LPDWORD, LPVOID*, LPWSTR) : DWORD+ Close() : DWORD

Sampling Process

Spawn new processSet up IPC

IPC link: Sample

Contains a dullified copyTo prevent recursive sampelings

Uses Sampeling functionality

«import»

1

1

1

1


Sampling Unit – Worker DLLProvides the core functionality of the entire

systemProvides category registration/un-registration

services for the GUI.Performs the actual

sampling and putsthe data in properformat for the OS.

uc Performance DLL

Performance DLL

GUI

Sampeling Process support PDH

Register

UnRegister

Open

Collect

Close

Parse Settings File

Get service from the PDH

Algorithm

Performs the actual computation

«include»

«include»


Provider DLLA shell providing the require API to the framework.Spawns the Sampling Process.Sets up an IPC channel.Forwards the sampling requests to the sampling

process.

Sampling ProcessDerived need from the frameworks constraints.Spawned by the Provider DLL.Wrapper to the Worker DLL.Propagates the data created by the worker DLL to the

provider DLL.

Sampling Unit – Wrapper Units

11

IntroductionDesign


ResultsDemo


Agenda


Allows extensibility of the systemDefined interface.Defined descriptor files.Any DLL that conforms to

the Algorithm Interface and comes with a proper descriptor file can be used.User can implement new

algorithms.

Algorithms Infrastructure - Introduction

uc Algorithm

Algorithm

Worker DLL

Initialize

Calculate

Close

Encounter Error

Access Error Num

«include»

«extend»

«extend»

«extend»


Exponential Smoothing By the formula:Takes alpha as a parameter.Single input counter.

Summation AlgorithmSimple sum of an arbitrary set of inputs.Requires no parameters.Unbound number of inputs.

Implemented Algorithms

]1,0(111 nfxnf n

14

IntroductionDesign


ResultsDemo


Agenda


P.A.T – Performance Analysis Tool.Manages the entire system.Designed to be intuitive and simple without

losing any of the systems functionalities.

Design – GUI


Design – GUI (cont.)


The GUI DatabaseThe light version.Represents the system

state.Can be serialized and

deserialized.allows saving the

system state.

Design – GUI (cont. 2)class DataStructure

GUI data structure

Algorithm

ParamInput

SerializableElement

Counter

Category

DataBase

*{ordered}

1

*{ordered}

1

*

1

*{ordered}

*

*

1

*

1


The GUI settings fileSerialization result.

Design – GUI (cont. 3)

cmp SettingFile

GUI Settings File

Algorithm List Block

- algorithms_num: int

Algorithm [algorithms_num instances]

- name_size: int- Algorithm_Name: wchar_t[name_size]- desc_size: int- Algorithm_Description: wchar_t[desc_size]- dll_path_size: int- DLL_Path: wchar_t[dll_path_size]- xml_path_size: int- XML_Path: wchar_t[xml_path_size]- max_inputs: int- inputs_num: int- parameters_num: int

Input Block [inputs_num instances]

- name_size: int- Input_Name: wchar_t[name_size]- desc_size: int- Input_Description: wchar_t[desc_size]

Categories List Block

- categories_num: int

Parameter Block [parameters_num instances]

- name_size: int- Param_Name: wchar_t[name_size]- desc_size: int- Parameter_Description: wchar_t[desc_size]- type: int- hasDefault: byte- default_value: double

Category Settings file structure [categories_num instances]

Header (Singleton)

- cat_name_size: int- Categoty_Name: wchar_t[cat_name_size]- cat_desc_size: int- Categoty_Description: wchar_t[cat_desc_size]- algorithms_num: int- number_of_counters: int

Counters (number_of_counters instances)

- name_size: int- Name_String: wchar_t[name_size]- description_size: int- Description_String: wchar_t[description_size]- Counter_Type: DWORD- Algorithm_Index: int

Algorithm Parameters

- parameter_count: int- parameters: double[parameter_count]

Input Counters

- number_of_inputs: int

Input Counter Instance (number_of_inputs instances)

- counter_path_size: int- Counter_Path_String: wchar_t[counter_path_size]

Algorithm Files (algorithms_num instances)

- algo_name_size: int- Algorithm_Name: wchar_t[algo_name_size]

cmp SettingFile

GUI Settings File

Algorithm List Block

- algorithms_num: int

Algorithm [algorithms_num instances]

- name_size: int- Algorithm_Name: wchar_t[name_size]- desc_size: int- Algorithm_Description: wchar_t[desc_size]- dll_path_size: int- DLL_Path: wchar_t[dll_path_size]- xml_path_size: int- XML_Path: wchar_t[xml_path_size]- max_inputs: int- inputs_num: int- parameters_num: int

Input Block [inputs_num instances]

- name_size: int- Input_Name: wchar_t[name_size]- desc_size: int- Input_Description: wchar_t[desc_size]

Categories List Block

- categories_num: int

Parameter Block [parameters_num instances]

- name_size: int- Param_Name: wchar_t[name_size]- desc_size: int- Parameter_Description: wchar_t[desc_size]- type: int- hasDefault: byte- default_value: double

Category Settings file structure [categories_num instances]

Header (Singleton)

- cat_name_size: int- Categoty_Name: wchar_t[cat_name_size]- cat_desc_size: int- Categoty_Description: wchar_t[cat_desc_size]- algorithms_num: int- number_of_counters: int

Counters (number_of_counters instances)

- name_size: int- Name_String: wchar_t[name_size]- description_size: int- Description_String: wchar_t[description_size]- Counter_Type: DWORD- Algorithm_Index: int

Algorithm Parameters

- parameter_count: int- parameters: double[parameter_count]

Input Counters

- number_of_inputs: int

Input Counter Instance (number_of_inputs instances)

- counter_path_size: int- Counter_Path_String: wchar_t[counter_path_size]

Algorithm Files (algorithms_num instances)

- algo_name_size: int- Algorithm_Name: wchar_t[algo_name_size]

The category serializes into the

Worker DLLs settings file

19

IntroductionDesign


ResultsDemo


Agenda


Entire system top-view

deployment Full Deployment



Our System

«library»Worker DLL

+ ClosePerformanceCounter() : DWORD+ CollectPerformaceData(LPDWORD, LPDWORD, LPVOID, LPWSTR) : DWORD+ OpenPerformanceCounter(LPWSTR) : DWORD+ Register(String, String) : DWORD+ Unregister(String) : DWORD

«library»AlgorithmDLLs

Descriptor File

PDH

Setting fi le

GUI

Registry

- Settings File Path: String

Read: CountersAlgorithms & Parameters

Trace

Create & update

Read

Performance counterregistration

Use counterregistration functions

Prov ider DLL (Wrapper with minimal functionality)

+ SetDull() : void+ Open(LPWSTR) : void+ Collect(LPDWORD, LPDWORD, LPVOID*, LPWSTR) : DWORD+ Close() : DWORD

Sampling Process

Spawn new processSet up IPC

IPC link: Sample

Contains a dullified copyTo prevent recursive sampelings

Uses Sampeling functionality

Use sampeling API

(On open)Setting File Path

Contains Path

1

«use»

1..*

11

«import»

1

*

1

1

1

1


The initial system design was simpler.As it looked in the

mid-term presentation.The framework didn’t

support our usage.Doesn’t allow a

sampled process tosample others.

Solution: separatingthe providing and the consumption toseparate processes, as shown in the currentdesign.

Initial design and bumps in the road

deployment Deployment



Our System

«library»Performance DLL

+ ClosePerformanceCounter() : DWORD+ CollectPerformaceData(LPDWORD, LPDWORD, LPVOID*, LPWSTR) : DWORD+ OpenPerformanceCounter(LPWSTR) : DWORD+ Register(String, String) : DWORD+ Unregister(String) : DWORD

«library»AlgorithmDLLs

+ Initialize(Array, int) : ALGO_HANDLER+ CalculateAlgorithm(ALGO_HANDLER, Array, Array*) : Result+ CloseAlgorithm(ALGO_HANDLER) : void+ error_str() : char*

Descriptor File

PDH

Setting fi le

GUI

Registry

- Settings File Path: String

PDH Activates and uses the Open, Collect and Exit of Performance DLLPerformance DLL consumes counters using the PDH interface

CountersAlgorithms & Parameters

Trace

Create & update

Read

Performance counterregistration

Use counterregistration functions

1

1

1

«use»

1..*

22

IntroductionDesign


ResultsDemo


Agenda


Exponential smoothing

Results

24

Summing algorithm


Results


Rate exampleThis is the main advantage of our project over

the previous:Synchronized

sampling

Results


Existing solutionA. Svetlit & D. Nasi, 2008 (supervised by Oved Itzhak).Problem with Rate counters due to implementation in

managed language.

Our GoalsAllow the user to perform arbitrary manipulations on

existing performance data.Allow extensibility of the system to allow the user to

create personal algorithms. Implement a provider in a native language which could

determine when it is sampled.Wrap the entire system in a user friendly environment.

And just a reminder

27

IntroductionDesign


ResultsDemo


Agenda

Date post:	19-Dec-2015
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Presented By: Shatsman Yuri Leibovitz Amit Supervised By: Oved Itzhak Winter 2009/10 Networked...

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