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CentOS6.4 installation Nmon

Installation Mkdir/usr/local/nmon Cd/usr/local/nmon wget http://sourceforge.net/projects/nmon/files/nmon_linux_ 14i.tar.gz tar zxvf nmon_linux_14i.tar.gz chmod 777 NMON_X86_64_SLES11 Start ./nmon_x86_64_sles11 Description Press C to display CPU information, and then press C to close Show memory by M Show Network by n Press D to display the hard drive Generate Nmon Report ./nmon_x86_64_sles11-s10-c60-f-m/usr/local Parameter explanation:-S10 data is collected every 10 seconds.-c60 col

Solrcloud Configuring Chinese Word segmentation

solrcloud Add document, configure Chinese word segmentation Previous article wrote how to build Solrlcoud service and based on the default configuration for a simple query, and this simple query can only be fully query, not fuzzy query, today said to add Chinese word segmentation and pinyin participle First add a few articles, and according to the structure of the article can have such as name,title,content. So we should modify the Schema.xml file before uploading the article, add name, title,

Open Source Parser--ANTLR

, they have done a lot of basic work on the basis of compiling theory and the construction of language tools, and have directly led to the production of Russian ANTLR.nother Tool for Language Recognition1.1 lexical Analyzer (Lexer) The lexical parser is also known as scanner. Lexical Analyser and Tokenizer. Programming languages are usually made up of keyword and strictly defined grammatical structures.The goal of compiling is to translate the high-l

Android debugging tool-mat

. Installation A memory analysis tool provided by eclipse. It is a function-rich Java heap dump file analysis tool that helps you discover memory vulnerabilities and reduce memory consumption.Address: http://www.eclipse.org/mat (If you are using motodev studio for Android, this tool is provided by default)You can choose to install the original plug-in provided by eclipse or use the motodevstudio for Android plug-in 1. Original plug-in 1) Start eclipse and click Help-> intall new software ...;2)

Linux performance monitoring tool collectl installation and brief instructions for use

[Root @ test45 ~] # Vi/etc/resolv. conf Nameserver 202.106.0.20 1. Run Perl-mcpan-e Shell Select No in the selection window, without configuring CPAN Environment Parameters 2. Run the following command on the CPAN command line: CPAN> install time: hires 3. Run the following command on the CPAN command line: CPAN> install compress: zlib A prompt appears in the middle of the above two modules. Press enter. Then quit/exit to exit Perl CPAN Download the source code from the official website: Wget ht

How to: Configure a Linux iSCSI client

state:running scsi4 ChannelxxId0LUNs:6attached SCSI disk SDH state:running scsi4 ChannelxxId0LUNs:7attached SCSI disk SDI state:running SCSI4 ChannelxxId0LUNs:8attached SCSI disk SDJ state:running scsi4 ChannelxxId0LUNs:9attached SCSI Disk SDK state:running6. New disks found[Email protected] ~]# Fdisk-l |grep "Disk/dev"Disk/DEV/SDA:42.9GB,42949672960Bytesdisk/dev/mapper/vg_node01-lv_root:38.2GB,38193332224Bytesdisk/dev/mapper/vg_node01-lv_swap:4227MB

Ethernet switch toward network core

level products. Cisco and 3Com are still the leader in market share, Atrica, Extreme, foundry and Nortel have also introduced technology-leading and performance-friendly products, and Intel and other manufacturers have introduced low-end but superior performance products. Huawei introduced the S8016-type high-end routing switch in 2001, with a back-panel capacity of up to 256Gbps. The products of each section flourish Cisco offers a Catalyst series with a full range of switch products, and an

Transmission self-loop leads to the failure case of ZTE 2826 Switch unable to network management

inspection, found that the switch has a port loop, resulting in high equipment load. (The loop here is not a chain Lu Cheng between switches, instead, the port of the switch is connected to the transmission SDH equipment, the port that transmits the SDH device has the self loop, and if the broadcast packet enters the port, it will be forwarded back again, so that the other ports will receive the broadcast

Netcom MPLS VPN to build optical Bridge Company Area Connection

Optical Bridge is a company set up in the United States focused on the Chinese market, its headquarters in Beijing, and in Guangzhou, Shanghai, the United States and Denver have branch offices. Optical Bridge Company in the network design, implementation, construction and after-sales service has a very professional service, because its staff over the past decade has hundreds of SDH/DWDM project management experience.Because the company's various busin

Microwave communication Technology

time division multiplexing principle to form a group, then can be composed of two times Group 120 road, three times Group 480, four Times Group 1920, and after the digital modulator modulation on the transmitter, in the receiving end by the digital demodulator to restore the multi-channel telephone. The latest microwave communication equipment, its digital series standard and optical fiber communication Synchronous Digital Series (SDH) exactly consis

Technical features of a new generation of intelligent optical networks

The new generation of intelligent optical network as a future transmission network development direction has been recognized by the industry. As a Ciena company with a history of more than 10 years, there are many unique research results and leading technologies in this field. They have more mature ideas in the composition and technology of the new generation of intelligent optical networks. ——— Editor 1. Single-Machine integrated multiple SDH device

Ethernet switch build wide area network

level products. Cisco and 3Com are still the leader in market share, Atrica, Extreme, foundry and Nortel have also introduced technology-leading and performance-friendly products, and Intel and other manufacturers have introduced low-end but superior performance products. Huawei introduced the S8016-type high-end routing switch in 2001, with a back-panel capacity of up to 256Gbps. The products of each section flourish Cisco offers a Catalyst series with a full range of switch products, and an

Huawei routers often encounter faults when setting Wan

. Switching of transmission devices will affect the POS interface. When the POS interface is interconnected with the peer end through the transmission device, if the transmission device performs switching between the active and standby ends, the POS interface may be transient disconnected and an SDH alarm is triggered. If the active link is interrupted, the active link signal becomes invalid, and the POS interface detects that the transient channel si

How can small and medium enterprises select suitable Ethernet switches?

performance and therefore be more expensive. The LAN switch supports a speed from 10 m to 10G. The transmission medium uses copper wires or optical fiber cables, and the port ranges from several to several hundred. This type of switch generally supports TCP/IP and UDP, IPX, and AppleTalk protocols. Other features of this type of switch include: support for VoIP (IP-based voice service), QoS (service quality evaluation), bandwidth management and automatic report generation, support for multicast

Fault cases of failure in network management of ZTE 2826 vswitch caused by transmission self-ring

the switch. If the load of the switch is high, further check is performed, it is found that the switch has a loop on the port, resulting in a high load on the device. (The loop mentioned here is not a link between switches. Instead, the port of the switch is connected to the transport SDH device. The port of the transport SDH device has a self-ring. If the broadcast package enters the port, the packets wil

Discussion on the Development of Virtual Routers

This article describes the development and basic concepts, principles, and high-speed SONET/SDH Network Connections of virtual routers. I believe this article will help you. Recently, some new breakthroughs in IP backbone network equipment have paved the way for the future implementation of new Internet services. Vro is a new technology that makes some new Internet services possible. With these new services, you can control network performance, Intern

Call only one method by PAGE

Write a corresponding method by PAGE, except that the database table name and field name are different, which is too unprofessional. As a result, when the database table name and field name are proposed as parameters, the method is called and then input, so that the method portability in the class is much better. Class Code : /// /// Bind data by PAGE/// /// /// /// Public datatable showpagesea (INT pageindex, int pagesize, string datatable, string ID){String SQL = "select top" + pagesize + "* f

Application of PCM devices in DDN Network in Dalian Telecom networking

transmission links based on SDH or PDH is wider and wider, and has reached the village level in some areas. A large number of underground optical cables provide a large number of E1 links, which are cheap and available everywhere.All of these make the DDN Network Based on PCM devices a good choice, providing a solution for access to large users in both the township level 4 network and the urban level 3 network. In this solution, there is no need for

Integration of ATM and DDN

, mappers launched the latest MP 9710 multi-service access platform MSAP ). The primary goal of the new MP 9710 MSAP is to extend the ATM network so that operators can provide flexible and diverse data leased line services at a low cost, achieve the goal of rapid investment recovery and continuous profitability of the network. Connection between leased lines and ATM services Financial users account for the largest proportion of leased line business profits. Achieving 2 m to outlets is an importa

Analysis and Handling of Two Optical Fiber Links

A friend of the author works in China Telecom and is mainly responsible for the fiber optic business of China tietong. At a recent meeting, he told me about several failures encountered during Optical Fiber maintenance. The author selects two of the most representative introductions for readers, I hope you will learn from the article and reflect on the whole process of solving the problem. Fault 1: multiplexing segment codes caused by SDH and their ha

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