ObjectiveGlances can provide Unix and Linux performance experts with the ability to monitor and analyze performance data, including:
CPU usage
Memory usage
Kernel statistics and running queue information
Disk I/O speed, transmission, and read/write ratios
Free space in the file system
Disk Adapter
Network I/O speed, transmission, and read/write ratios
Page space and page speed
The process that consumes the most
The use record of serial Bluetooth in ap6212 under LinuxFirst, the Linux Bluetooth tool portingThe main tools used and related libraries are as follows:bluez-libs-3.36libxml2-2.7.4dbus-1.0.2glib-2.24.2bluez-utils-3.36openobex-1.5Download the appropriate source code to extract, according to the above sequence to compile.Add mk.sh content in bluez-libs-3.36 as follows#!/bin/sh./configure--prefix=/usr/bluez--h
/***************************************************************************** * Linux/Android Performance Optimizer With perf * Description: * has been looking for the Performance optimization tool on Android, but never know what to look for keywords, * Today in the Android source code directory to see LINUX-TOOLS-PERF, check the relevant information, finally *
The netstat command is a useful tool for monitoring TCP/IP networks. It displays the route table, the actual network connection, and the status information of each network interface device. The following describes the implementation of the Linux testing tool netstat.
After running the Linux test
Nmon is the abbreviation for Nigel's performance Monitor for Linux on POWER, x86, x86_64, Mainframe Now ARM (Raspberry Pi), meaning Nigel (n Mon is the author of Nigel Griffiths) 's Linux performance detector.This system administrator, tuner, benchmark tool will provide you with a number of important performance information. It can output this data in two ways:1
Linux command line Text Processing tool file Browse Cat view file contentsMore view file contents as page flipping (page down only)Less view the contents of a file as a page turn (page up or down)Head view the beginning of the file 10 lines (or the specified number of lines)Tail View the end of the file 10 lines (or the specified number of lines)Search based on keywordscommand grep to search for text based
One step forward and one step closer, good and webbench can simulate up to 30 thousand concurrent connections to test the load capacity of the website. I personally feel better than the AB stress testing tool that comes with Apache, installation and use are also very convenient.
1. Linux stress testing tool:
2. Compile and install the
We mentioned earlier that there are many Linux system monitoring tools that can be used to monitor system performance. However, we estimate that more users may prefer tools (top commands) that are included in most Linux distributions ). The top command is a real-time task manager in Linux. it is also used to find the system performance in the GNU/
. It contains boot messages at system startup and other status messages when the system is running. IO errors, network errors, and other system errors are recorded in this file. Other information, such as a person's identity switch to root, is also listed here. If the service is running, such as a DHCP server, you can observe its activity in the messages file. Typically,/var/log/messages is the first file you want to view when troubleshooting.Summary:Today is mainly about these, before exploring
Linux Performance Testing Tool Lmbench is a simple and Portable Micro-evaluation tool that complies with the ANSI/C standard for UNIX/POSIX. In general, it measures two key features: Response Time and bandwidth. Lmbench aims to give system developers an insight into the underlying costs of key operations.
1. Use and introduction of Lmbench
feedback to peer-to network, then "hotlinking" and "blood-sucking donkey" so come.P.s. Yes, what you see on the Zhon Wen Wikiri side is basically the same as above, I just made a deletion and refinement, and I hereby make a statement here.Spit Groove A sentence: Although the content is wiki, and the Chinese wiki on the introduction of these three are very comprehensive, but I did not see the three (Thunderbolt is p2sp) peer download method put together to make a comparison, then no comparison,
What is a cross-compilation toolHttp://elinux.org/Toolchains to explain the cross-compilation tool, we first need to understand three basic concepts:
Compile platform: Refers to the platform on which the compiler is compiled
Compile host: on which platform the compiler runs
Target platform: Which platform the compiler generates code for
For example, we compiled the ARM Development Board program under Ubuntu (
How to use the Linux partition tool in the process of learning Linux, installing Linux is the first threshold for every beginner. In this process, the biggest confusion is to partition the hard disk. Although Linux of various release versions already provides a friendly grap
system startup and other status messages when the system is running. IO errors, network errors, and other system errors are recorded in this file. Other information, such as a person's identity switch to root, is also listed here. If the service is running, such as a DHCP server, you can observe its activity in the messages file. Typically,/var/log/messages is the first file you want to view when troubleshooting. Summary: Today is mainly about these, before exploring the
The Linux Performance Detection Tool VMSTAT command provides monitoring of information such as processes, memory, page I/O blocks, and CPUs, Vmstat can display the average or sampled values of the test results, and the sampling mode can provide a monitoring result of different frequencies over a sampling period.Linux Performance Detection Tool vmstat command proc
Linux tool installation: first open the virtual machine, there is a virtual machine column in the toolbar, click to find the installation tool on the linux page will have a tool drive, open the optical drive will see the tool to i
Orderunder Linux C or C + + project development, Makefile is the necessary strength, but found handwriting is very troublesome. Baidu has a comake2 tool, used to automatically generate makefile tools, and in the outside of this wanted to find a similar tool, but found it difficult to do, only found a similar intelligent generation
Article Title: LINUX disk fragment quick cleanup tool Kleandisk. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
No matter what types of file formats (ext3, JFS, XFS, and ReiserFS)
operating system, what kind of scene will it look like? There is no timely and lively instant messaging, no popular computer games, and office is still stuck in the Age of paper and pencil plus Abacus ...... Isn't that even worse ?!
I don't think that too much ease of use will turn people into idiots. On the contrary, it can improve efficiency, save time, and make the brain think about doing more things. On the contrary, ease of use cannot be improved. software can only be used by people who de
When writing programs, especially embedded programs, we usually need to analyze the program's performance so that the program can run faster and better to achieve real-time. If the program is large, it will be difficult to analyze it. If there is a tool that can automatically analyze the program's performance, it would be better. The following describes a Program Profiling tool in
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