polycom 2w

Blogging thinking: Both theory and practice, trying to know what this thing is, where to use it, when to use it, why to use it, and how to use it next. Learning ability, thinking method.Knowledge System:Foundation (RHCE)RH033RH133RH253RHCA:RH401RH423 (LDAP)RH442 system Tuning, the basic principle of hardware and the basic principle of the system.RH436RHS333Mysql:RH436: Clustering and accessNosqlOperations Engineer: For example: 2w Server, System proce

deleted files # lsof |grep/var/log/messagessyslogd 1283 root 2w REG 3,3 5381017 1773647/var/log/ Messages (Deleted)# head-n 10/proc/1283/fd/2aug 4 13:50:15 holmes86 Syslogd 1.4.1:restart. 4 13:50:15 holmes86 kernel:klogd 1.4.1, log Source =/proc/kmsg started. 4 13:50:15 holmes86 kernel:linux version 2.6.22.1-8 ([emailprotected]) (gcc version 4.2.0) #1 SMP Wed Jul 18 1 1:18:32 EDT 2007Aug 4 13:50:15 holmes86 kernel:bios-prov

memory 2G, except for the general start of the service needs about 500M (conservative estimate), and the remaining 1.5G available, then theoretically support 1.5*1024*1024*1024/200000 = 8053.06368About 8K processes, support 2W people at the same time access should be no problem (can guarantee that 8 k people access quickly, others may need to wait 1, 2 seconds to connect, and once the connection will be very smooth)MaxClients that control the maximum

VIM Tutor makes you know enough commands-easily use VIM. If you wanna get full version of VIM Tutor, execute vimtutor in the shell. Lesson 1 The cursor is moved using either the arrow keys or the HJKL keys:h (left), J (off), K (UP), L (right) To start Vim from the shell prompt Type:vim FILENAME To exit Vim Type:: q! To trash all changes. Type:: Wq to save the changes. To delete the character at the cursor type:x To insert or append text type:

I reprint: http://www.cnblogs.com/panshenglu/archive/2009/09/21/1571258.htmlIn a web system, printing is a really annoying problem.Either develop the print control yourself, if the project time is tight, certainly too late.Either buy a mature print control, if it is a big project can be considered, but if the project only a few K to 1, 2W, this is troublesome.Some time ago there was a chance to touch web printing. In the blog park, Csdn find long time

The difference and introduction of character encodingASCII, GB2312, GBK, Unicode (Unified Code, universal code, single code)ASCII code 1 bytes accounted for 8 Bitcoin, Unicode Unified 2 bytes accounted for 16 Bitcoin;Utf-8 is a subset of Unicode, variable length, all English words are in ASCII format, Chinese characters are 3 bytes.ASCII 255 1bytes---> 1980 GB2312 7k+----> 1995 GBK1.0 2w+--->2000 year GB18030 2.7W---> Unicode 2bytes--- ; Utf-8 en:1byt

links, Admin5 is because of the high weight, friendship links is because the content of complementary and recommended the role of strong First of all, determine the content of your site and keywords, suggest you use Baidu Index to find the corresponding keywords. Here I chose QQ2009 this keyword, QQ2009 this keyword current daily search quantity has 2W above. Select the flow of keywords after the analysis, to analyze the choice of the keyword compet

: Sketch this aspect is much weaker, does not support the search at all. Conclusion Usually pay attention to some good websites, RSS, see how people outside how to work. Material and inspiration, it is really important, but, it is not no can not work. I also think the above is a little bit more, so in simple terms, this is the source Library rules: Inspiration, unified first into the backlog; Material, unified first into the download directory; Organize and classi

process with PID 1234. There are various files in each process directory that allow the application to simply understand the process's memory space, file description list characters, symbolic links to files on disk, and other system information. The LSOF program uses this information and other information about the internal state of the kernel to produce its output. So lsof can display information such as the file descriptor of the process and the associated filename. That is, we can find infor

the addition unit element and multiplication unit element on the field) The elements on each domain have their negative and inverse entities: A + (-a) = 0, A. (a-1) = 1 Computer operation and Finite field As you know every computer language, whether static or dynamic language, has its most basic data types, each data type has its data range, which determines that the operation must be a finite field operation. The finite field was first proposed by the mathematician Galois,

refer to the Chinese Windows inside code.It is clear that the ASCII code cannot represent all the words and symbols in the world, so it is necessary to create a new encoding that can represent all the characters and symbols, namely:UnicodeUnicode (Uniform Code, universal Code, single code) is a character encoding used on a computer. Unicode is created to address the limitations of the traditional character encoding scheme, which sets a uniform and unique binary encoding for each character in ea

#BEGIN CONFIG INFO #DESCR: 4GB RAM, using only InnoDB, ACID, a small number of connections, large queue load #TYPE: SYSTEM #END CONFIG INFO # # This MySQL profile example for 4G memory, and in www.bt285.cn bt download with www.5a520.cn novel 520, these two days IP 2w, PV 20w tested. # Main Use InnoDB #处理复杂队列并且连接数量较少的mysql服务器 # # Copy this file to/ETC/MY.CNF as a global setting, # MYSQL-DATA-DIR/MY.CNF Specify settings as Server # (@localstatedir @ for

pity that I configure the price to be posted to the physical store to take goods, especially high-end goods, is basically impossible to get, the two or three-line city more serious! The entity store has the rent and the staff's salary, most of the computer city, the first floor is notebook and brand machine, 234 floor diy façade monthly rent is about 2W, And on the five floor of the second-hand accessories market, the counter rent as long as 3K or so

Asus recently released a new 3D display with a model of VG248QE. This 24-inch Full HD display response time is only 1ms, while the refresh rate is 144Hz rather than the traditional 120Hz. This helps to make the on-screen movement of the screen more clear and smooth. On the surface, Asus VG248QE may be one of the best options for gamers. But how does it change in practice? Design and manufacture For Asus VG248QE, it looks very much like its predecessor, a 23-inch vg236h, with a shin

inadequate First of all, pc/tablet products, in order to take care of the heat dissipation and energy consumption of a small fuselage, can only give up the use of a decent Intel Haswell processor (except for some of the more bulky models) and can only be equipped with a function of only 2W Baytrail, although Bay Trail has a lot more performance than previous products, but it's a kind of processor for both lightweight and flat-panel proce

write a special entry post, before this, you can try Google 14, understand their own system, do not prematurely optimize! Premature optimization, has always been a very annoying and constant problems, most of the time because they do not understand their own system, do not know their own system's true carrying capacity For example: Thousands of data news table, hundreds of thousands of times a day body search, most of the time we can rest assured to like, and not to build a set of Full-text

At first it didn't occur to me that this 10w of data a number inserts a number for half an hour only 2w. Later, an improved SQL BULK INSERT Copy Code code as follows: --Before optimizing the code Insert into table (MOBILE) values (138000000); Insert into table (MOBILE) values (138000000); Insert into table (MOBILE) values (138000000); ...... --After the optimization Insert into table (MOBILE) values (138000000), (138000000), (138000

instead), here is no longer to repeat the well-known page static, caching and code security issues, Some technical CTO of the 2.0 companies are aware of these things and we talk about the problems after development A company A company is to do is SNS website, the procedure is two hair head lad to do, the goal pointed at 51, the procedure development is smooth sailing, the function also is more than 51 cattle, the promotion is also plain sailing (a company has its own unique promotion way. But

also likely to occur clock inconsistencies. Client and server clock inconsistent can use client timing and server synchronization time, consider the performance problem, the interface for synchronization time because it does not involve back-end logic, just want to send the current Web server time to the client can be, so fast, the results of my previous test, see, A standard Web server 2W+QPS will not be a problem, if 100W people at the same time br

8K processes, support 2W simultaneous access should be no problem (to ensure that 8 K of the people visit quickly, others may need to wait 1 or 2 seconds to connect, and once the connection will be very smooth) Control the maxclients of the maximum number of connections, so you can try to configure to:Startservers 5Minspareservers 5Maxspareservers 10Serverlimit 5500MaxClients 5000Maxrequestsperchild 100 Note that maxclients defaults to a maximum of 2