dpc latency

1. DPCLATENCY
DPCLATENCY
DPCLATENCY
DPCLATENCY
DPCLATENCY
LAB-1
PRESENTED BY:
NAME:
MUHAMMAD FAHAD SALEEM
ROLL #:
2K16/TCT/33

2. DPCLATENCY
INTRODUCTION:
DPCLATENCY
DPCLATENCY
DPCLATENCY
DPCLATENCY
Thesycon’s DPC (Deferred Procedure Call) Latency Checker is a Windows tool that
analyses the capabilities of a computer system to handle real-time data streams
properly. It helps to find the cause for interruptions in real-time audio and video
streams, also known as drop-outs.
A Deferred Procedure Call is a Windows OS mechanism by which computer system
allowing the device drivers to execute high-priority part of their processing quickly,
and schedule non-critical additional processing for later execution.
You can download it from: https://www.thesycon.de/eng/latency_check.shtml
NOTE:
The operating system maintains DPCs scheduled by
device drivers in a queue, knowing that there is one DPC
queue per CPU available in the system.

3. DPCLATENCY
INTRODUCTION:
DPCLATENCY
IMPORTANT TERMS:
DPCLATENCY
DPCLATENCY
DPCLATENCY
LATENCY:
It is define as the overall time for a data packet takes to travel from one
node to another it is also known as RTT(Round Trip Time) and Pings when
considering round from source to .
DROP-OUTS
It is define as the interruptions occur during the processing of data inn real-
time.
5µs
10µs

4. DPCLATENCY
INTRODUCTION:
DPCLATENCY
IMPORTANT TERMS:
DPCLATENCY
SYSTEEM SPECIFICATION:
DPCLATENCY
DPCLATENCY
WINDOWS EDITION:

5. DPCLATENCY
INTRODUCTION:
DPCLATENCY
IMPORTANT TERMS:
DPCLATENCY
SYSTEEM SPECIFICATION:
DPCLATENCY
TEST NO: 1
DPCLATENCY
OBSERVATION:
After installing the DPC Latency
Checker I run it the following
window appears and showing my
system is compatible for VoIP
voice/video streaming without any
interruption. At this time there is no
other application in running accept
background application like
(antiviruses(Bitdefender), host
programs and firewall etc..) and the
DPC itself.

6. DPCLATENCY
INTRODUCTION:
DPCLATENCY
IMPORTANT TERMS:
DPCLATENCY
SYSTEEM SPECIFICATION:
DPCLATENCY
TEST NO: 1
DPCLATENCY
TEST NO: 2
OBSERVATION:
When I open some other windows
applications like MS Office products
and also browsers the DPC latency
shows that the machine may offers
dropouts in real time voice and
video streaming. And these
dropouts can be overcome by
enabling/disabling and updating
the various device drivers.

7. DPCLATENCY
INTRODUCTION:
DPCLATENCY
IMPORTANT TERMS:
DPCLATENCY
SYSTEEM SPECIFICATION:
DPCLATENCY
TEST NO: 1
DPCLATENCY
TEST NO: 2
DPCLATENCY
RESULTS AFTER En/Disabling:
Thus according to the instruction of DPC Latency I close all
other running applications and goto the device manager in
PC manager option and enable and disable different voice,
video and LAN derivers thus the status change for my
device and shown in figure by DPC Latency checker.

8. DPCLATENCY
INTRODUCTION:
DPCLATENCY
IMPORTANT TERMS:
DPCLATENCY
SYSTEEM SPECIFICATION:
DPCLATENCY
TEST NO: 1
DPCLATENCY
TEST NO: 2
DPCLATENCY