For system and network administrators, it is a heavy task to monitor and debug the performance of Linux systems on a daily basis. After 5 years working as an administrator in the IT field as a Linux system, I gradually realized how difficult it was to monitor and keep the system up and running. For this reason, we have written a list of the 18 most commonly used command-line tools that will help each Linux/
ArticleDirectory
Monitor description
Use pulse and wait
Do not use pulse and wait
Conclusion
Monitor description
Enter, tryenter
Obtain the object lock. This operation also marks the beginning of the critical section. No other thread can enter the critical section unless it uses other locked objects to execute commands in the critical section.
Wait
Release the lock on the object
Some of the theoretical aspects of performance optimization, mainly to review, with the theory, Comrade Xiaoping said again, practice is the only standard to test the truth, for memory leaks, now through the Android Studio self-brought tool memory monitor detected. The importance of performance optimization does not need to be stressed, but to emphasize that I am not an old driver, hey! Please open your eyes if you have not used this tool. If you have
Some of the theoretical aspects of performance optimization, mainly to review, with the theory, Comrade Xiaoping said again, practice is the only standard to test the truth, for memory leaks, now through the Android Studio self-brought tool memory monitor detected. The importance of performance optimization does not need to be stressed, but to emphasize that I am not an old driver, hey! Please open your eyes if you have not used this tool. If you have
For normal testing, you often need to look at the data in Performance Monitor and now teach you how to turn on Performance Monitor:
1. Start-run (or press Win+r to open the Run dialog box)
2, input "Perfmon", and then enter
Run window
You can go to Performance Monitor, as shown in the figure:
Performance Monito
This is the article published today by MSDN on Windows 8 and multi-monitor support, and the author, Steven Sinofsky, reads: When people use a computer that connects multiple monitors, the satisfaction of the experience increases. A multi-monitor operating mode allows us to perform multiple tasks at the same time, thereby increasing the user's productivity. Windows 8 will lead you to experience the benefits
solely on the show slave status provided by MySQL itself. Pt-heartbeat is a good choice for master-slave replication latency monitoring. This article describes the latency monitoring in the case of master-slave replication and provides corresponding examples.
Pt-heartbeat is one of the percona-toolkit. Therefore, you need to install percona-toolkit before use. For details, see percona-toolkit installation and introduction.
1. pt-heartbeatPt-heartbeat measures replication lag on a MySQL or Pos
Property Monitor
The property monitor monitors and responds to changes in the property value. It calls the property monitor every time the property is set. Even when the new value is the same as the current value, it is no exception.
You can add a property monitor for other storage properties except for Delayed Storag
Installing an adjustable monitor working in front of a computer is a sedentary lifestyle that is most susceptible to injury to the neck and back. The office workers should install an adjustable monitor. Such a monitor is adjusted to suit everyone's different physiological characteristics.
Must be placed on the center of the keyboard if the
1. Each object is associated with a monitor. Each monitor corresponds to a wait pool, and the wait pool stores more than N call threads. All threads that call the synchronize (OBJ) Method, if other threads have called the synchronize (OBJ) method to obtain the monitor, and the monitor has not been released, the current
This article only describes some precautions in the program. The performancecounter in. Net accounts for the main part. If you are interested, you can download the source code for reference.
Directory
And download
Brief Introduction to performance monitoring concepts in windows and. net
Use performancecounter in. net
Mvvm: bind an icommand set
Thread-safe observablecollection
About Charts
Returned directoryAnd download
Note: The program works well in my Windows 7 environment, but i
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
650) This. width = 650; "Title =" wps23f6. TMP "style =" border-top: 0px; border-Right: 0px; Background-image: none; border-bottom: 0px; padding-top: 0px; padding-left: 0px; bo
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
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 content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.