I. Purpose and preparation
Use gns3 and VMWare to simulate the real environment and use prtg to monitor the status of Cisco Routers
Preparations: gns3 simulation routing software and VMWare virtual software, prtg.
Ii. Experiment steps
1) Build the following topology Environment
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Recently a friend asked me such a question, his computer for a while and then closed, not too long after the screen black screen, display no signal input. His problem is actually very simple, that is, the VGA line sent. This question is also a more common problem. Such problems are frequently encountered by many computer users. In fact, as long as you have some understanding of the working principle of the computer, these devices can not damage the simple failure of their own hands to eliminate.
First step: monitor color is not normal, we recommend that you first use the elimination method, as far as possible to eliminate some simple problems, because the display color display is not normal for many reasons, such as monitor color Control Panel is not set up, the display of wire rod contact bad or rust can lead to such problems occur.
The second step: If you are newly bought
This article illustrates how to monitor the occurrence of deadlock in DB2 UDB through concrete examples. There are two types of monitors in the DB2 UDB: The snapshot Monitor and the event monitor. A snapshot, as its name suggests, is a slice of the database's continuous state, and through the snapshot monitor, you can
DBA ranking first: Enterprise monitor simplifies MySQL database management. for database administrators, database monitoring plays an important role. Compared with commercial database products such as Oracle and SQL Server, open-source databases have consistently performed poorly in this regard, but after MySQL launched its Enterprise edition,
It brings a good news to Enterprise database administrators who use this open-source database: MySQL Enterpr
Many readers are interested in System Safety Monitor (SSM. It is a Russian system monitoring software that monitors system-specific files (such as registries) and applications.
Program To protect system security. Some features are more powerful than the winpatrol we have previously introduced.
Install and start (you can manually run syssafe.exe) SSM in the installation directory, click Close this windows (Close Window) in the pop-up logo window t
Here we will introduce the C # Lock keyword. It can define a piece of code as a critical section. A mutex can only be executed by one thread at a time, while other threads must wait.
C # language is worth learning a lot. Here we mainly introduce the C # Lock keyword, including the locking of an object in the monitor class.
C # provides a lock keyword, which defines a piece of code as a critical section. A mutex section allows only one thread to
Zabbix and MPM monitoring MySQL
Environment DescriptionA: 192.168.1.190, CentOS 6.3, Zabbix Server deployedB: 192.168.1.191, CentOS 6.3, Zabbix Agent, MySQL 5.5.29 (MySQL Slave)
MPM/Zabbix monitoring structure and deployment stepsMPM/Zabbix monitoring structure:Follow these steps to monitor MySQL using MPM/Zabbix:
Install and deploy Zabbix
Download and install MPM (Performance Monitor for MySQL)
The Framework provides three locking mechanisms: the Monitor class, the Lock key word, and the Mutex class.
In general, lock and monitor can lock objects or functions, while mutex is generally used to lock functions and ensure that functions are synchronously called between different threads, without being affected by the thread priority. When the lock and monitor
One. Monitor usage Maintenance: 1. Display should be placed as far as possible away from the strong magnetic field, such as High-voltage wire, speakers, etc., otherwise the picture tube is easily magnetized. 2. Use the display to orient the monitor as far as possible, because the display factory adjustment is orient-oriented, so that the monitor is affected b
Display is almost every computer player to face every day, its work "performance" of good or bad, not only affect our day-to-day office efficiency, but also with our eyes "feeling" closely related. Let the monitor work daily, let it work "performance" has been in a good state, this is the tireless pursuit of every computer player; however, the display in the long time for our "service" process, there will inevitably be a variety of unexpected illnesse
Label:The pain and suffering of SQL analysis Many DBAs have some questions about the SQL statements on the line, and it's good to look at the cost of executing the plan, but there's a big difference in the actual execution. For a large SQL statement, looking at the resulting execution plan without knowing where the bottleneck is, the SQL statement is too complex, the execution plan looks more complex, and it is not easy to read the essentials. Occasionally some friends ask me, how to read an i
From: http://www.cnblogs.com/freshman0216/archive/2008/07/29/1252253.htmlThis article starts with the class relationship diagram of monitor, mutex, manualresetevent, autoresetevent, and waithandler. We hope to have a general understanding of common thread synchronization methods through this introduction, the application details of each method are not explained too much. Let's take a look at the relationships between these classes:
1. Lock keyword
Lo
Abstract: This article introduces that the C # monitor class can lock an object. A thread can operate on this object only when this lock is obtained. The object lock mechanism ensures that only one thread can access this object at a time point that may cause confusion. When multiple threads share an objectCodeFor a similar problem, the lock keyword should not be used. here we need to use a class monitor
You can use Windows performance monitor to check in real time how running programs affect computer performance and collect log data for future analysis.During the testing process, you often need to view the data in the "Performance Monitor". Now you can enable the "Performance Monitor" method:1. Start-run (or press win + R to open the run dialog box)
2. Enter "pe
For many beginners, the ROM Monitor of Cisco routers is often unfamiliar or even daunting. The reason is very simple. First, we do not often use this mode and are not familiar with its related operations; second, Operation errors in ROM Monitor mode often cause fatal damage To routers, such as destroying IOS files in flash, resulting in system crashes. So many people put their hands on it and are discourage
Windows Performance Monitor is an easy-to-use built-in monitoring tool that can easily meet some basic and simple monitoring requirements. This article mainly summarizes how to expose some performance data in your application to the Performance Monitor for convenient management.
What? I don't know what Windows Performance Monitor is?
"MicrosoftManagement Console(
, the Linux operating system default shell is generally the Bourne Again shell, which is Bourne shell extension, called Bash,bash command syntax is a superset of Bourne shell command syntax, and in The Bourne shell adds and enhances a number of features on the base. Here, we use Bash as an example to summarize some of the things that the Shell uses to monitor system and process resources, and hopefully it will help you.Back to top of pageUse the Shell
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