ENdoSnipe introduction of diagnosis rules part 1

Introduction of Diagnosis RulesPart 1

Acroquest Technology Co., Ltd.

1. is a diagnosis and monitoring tool for Java program.

2. This document introduces “Three rules to be useful immediately” among several diagnosis rules in .

3. information and data is available from following web siteTry to useI. http://www.endosnipe.com/II. http://github.com/endosnipe/ENdoSnipe

Introduction

2Copyright © Acroquest Technology Co., Ltd. All rights reserved.

http://www.endosnipe.com/

http://github.com/endosnipe/ENdoSnipe

Index

1. If memory leak occurred...2. If full scan is performing in SQL...3. HashMap is not used without

synchronization...

Extra1. If you want to see execution plan for SQL...2. If you want to see resources’ changes in long

term...3

Copyright © Acroquest Technology Co., Ltd. All rights reserved.

1. If memory leak occurred ...

Copyright © Acroquest Technology Co., Ltd. All rights reserved.4

ENdoSnipe monitors number of components in Collection, and warns when whole-number multiple of threshold is over

Leak detection with same ID(11101e36 in this picture) continues, memory leak occurs almost certainly.



When you see the graph, it is obvious that temporary increasing of the amount of object or successive increasing.

First detection point

Second detecting point

Third detecting point



When you confirm stack trace on the detail screen, suspected point is found immediately.

Let’s look at line number 716 in EmployeeLogicImpl.java which adds elements to HashMap

2. If full scan is performing in SQL ...


Character “Full scan” appears in the list of Performance Doctor ...



You can judge whether fix or not at detail screen based on SQL processing time and execution plan.

Yon can configure that SQL is obtained only if execution time is long. You can analyze intensively at slow SQL.



You can get where you need to fix because stack trace appears.

3. HashMap is not used without synchronization ...


You need pay attention when this message appeared. Especially, ERROR level is “Catastrophe” certainly.

If you left it ・・・（Go to next page）

3. HashMap is not used without synchronization ...


You should use ConcurrentHashMap instead of HashMapYou can know mechanism from below (Japanese) http://www.atmarkit.co.jp/fjava/rensai4/troublehacks10/troublehacks10_1.html

The system has been freezing. CPU utilization is 100%.

Never down

http://www.atmarkit.co.jp/fjava/rensai4/troublehacks10/troublehacks10_1.html


【Extra】

1. If you want to see execution plan for SQL...When you want to see execution plan for SQL, you can operate as follows.

1. Select SQL node in the tree. You can monitor

number of execution and response time of SQL. It is useful enough!


【Extra】

1. If you want to see execution plan for SQL ...

2. Next Select “Plan” tab, you can confirm1. Query (Formatted)

2. Execution plan

3. Stack trace

How helpful is this!!


【Extra】

2. If you want to see resource’s changes in long term ...

Appear at the list to download after waiting a while.

Let’s use reportingfunction.Input target resource and duration.


0

100000000

200000000

300000000

400000000

500000000

600000000

2013/09/19

20:00:01

2013/09/19

20:18:01

2013/09/19

20:36:01

2013/09/19

20:54:01

2013/09/19

21:12:01

2013/09/19

21:30:01

2013/09/19

21:48:10

2013/09/19

22:06:10

2013/09/19

22:24:07

2013/09/19

22:42:11

Max Minimum Average

Open Excel file in the Zip file, you can see graphs of resource’s changes.

【Extra】

2. If you want to see resource’s changes in long term ...

16

20132013 20142014

• Poring PerformanceDoctor

• Porting report export function

• Hadoop/Hbase monitoring

• Linux monitoring

• Apache monitoring

• PostgreSQL/MySQLmonitoring

• PHP/Python/Rubymonitoring

Ver. 5

• Porting ArrowVision

• Porting BottleneckEye

• Enhancement of Linuxmonitoring

• Enhancement of Apachemonitoring

• Enhancement of PostgreSQL/MySQL monitoring

• Enhancement of PHP/Python/Ruby monitoring

Ver. 7Enhanced monitoring target.Performance monitoring to operational environment.

• Outlier detection

• System map

• AWS support

• Add Backend DBMS（SQLite）

Ver. 6

Plan to enhance APM function such as outlier detection. You can start diagnostics and monitoring without configuration.

Plan to enhance monitoring function

【Extra】

3. Roadmap of ENdoSnipe

Contact us


Infrastructures Evolution

ContactAcroquest Technology Co., Ltd.

TEL ：+81-(0)45-476-3171 E-Mail：[email protected]

mailto:[email protected]