Profiling documentforaltrec

Profiling
 “In software engineering, performance testing is in
general testing performed to determine how
a system performs in terms of responsiveness and
stability under a particular workload. It can also serve
to investigate , measure, validate or verify
other quality attributes of the system, such
as scalability, reliability and resource usage.”
Performance testing(Profiling) is/will be done by “Your
Kit Java profiler” and Load test will be done by “Jmeter” .
@Altrec

Agenda
Introduction.
 Java profiler functionalities.
a) CPU
b) Threads
c) Memory
d) Garbage collection
e) Exception
f) Deadlocks
 Integration with eclipse.

Introduction
 Your Kit java profiler has developed a revolutionary
approach to profiling applications at both
development and production stages, bringing
unparalleled benefits to professional Java developers
on all platforms, including Windows, Linux, Mac OS
X, Solaris, FreeBSD, HP-UX.

 performance and scalability problems at the early
stages of development, thus ensuring product quality
from the very beginning. The ability to profile Java
applications not only during testing but even in
production results in substantial increases in the final
product quality and the level of customer support.
 Providing good Quality, Productivity, Time
savings.

Requirements
 Download Yourkit java profiler
http://www.yourkit.com/download/index.jsp
 Profiler Version 9.0.9
 Both Client & Agent version’s should be same.

Starting Environment in Profiling mode
• First the environment(altrecdev or altrecqa) should be
restarted with profiling enabled(startup_with_yjp.sh)
Note: After completion of profiling restart server in normal
mode.

 In order to connect click on “Connect to remote
application” and enter the environment name as
shown in the below snapshot.

1. Capture performance snapshot.
2. CPU profiling
3. Clear CPU profiling
4. Enable stack telemetry
5. Capture memory snapshot
6. Start Object allocation record
7. Advance Object Generation number
8. Automatically capture snapshot on event
9. Force garbage collection
10. Start monitor profiling
11. clear monitor data
12. Enable Exception telemetry ..etc

1. Click on “CPU profiling ” to start profiling in
Yourkit profiler.
2. Open “www.altrecqa.com” in web browser .
3. Stop the “CPU profiling ” and click on
“Capture performance snapshot ”
4. The CPU profiler shows the flow hierarchy, time
taken by each method to execute, Sql statements
/procedures,Jsp/Servlets and JNDI (jar files )used
to load home page.
Profiling the AltrecQa home page

CPU Profiling
Shows a top-down call tree for selected thread ("by thread") .

Threads Profiling
The profiled application, use the "Threads“ to track the live threads

Memory profiling
Memory state of this profiled application, It contains information
about all loaded classes, about all existing objects, and about
references between objects.

GC Profiling
The objects it collects are those that are not accessible by
references from GC roots.

Exception Profiling
"Exceptions profiling" shows exceptions which were thrown in the
profiled application

Deadlock Profiling
Java-level deadlock happens in the profiled application, it will be
automatically detected.
If the deadlock is found, a notification will be shown. Find the
deadlock detail in the "Deadlocks" tab.

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Installing plug-in steps

Profiling documentforaltrec

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