10 Second Memory

The fastest way to store a computer system is the ram traditionally used primarily as memory. As the access performance of the hard drive has deteriorated over the years, and the cost of RAM has been decreasing, many researchers have been exploring how to replace the hard disk with memory in recent years. As early as the 1980, David DeWitt and Garcia-molina and so on published a main memory database paper. Steven Robbins's article points out that the Turing Prize winner, Jim Gray, is more explicit about the idea that "memory will be a hard drive and the hard drive will become a tape."

I. Introduction We often see some similar in the program disassembled code 0 × 32118965 this address, the operating system called linear address, or virtual address. What is the use of virtual address? Virtual address is how to translate into physical memory address? This chapter will give a brief account of this. 1.1 Linux Memory Addressing Overview Modern operating systems are in 32-bit protected mode. Each process can generally address 4G of physical space. But our physical memory is generally hundreds of M, the process can get 4 ...

It's written in the front. With regard to the practical guide to interactive design, we have recently received feedback from many friends, supported and criticized, and thanks for your attention, we can go further. "Interactive Design Practical Guide" is actually collecting and summarizing some of the problems of interactive design, there must be a lot of old things, is not a cliché is not a problem, "the problem is that these old things have not been accumulated, has not been inherited, has not been structured." "(Qingyun) the interactive Design Practical Guide has a readership that covers many industries, and even interactions ...

"Three times a year upgrade memory, still can not meet the high requirements of antivirus software." Each upgrade product model, the computer's system resource occupancy rate is soaring, anxious to maintain the highest configuration of the year to become! Now, at the same time get efficient security and smooth network operation, unexpectedly became a kind of extravagant hope! "Mr. Zhang, the IT director of an enterprise, and many of the enterprise's IT executives, is hard to choose between efficient anti-virus products and optimizing network resources." Based on the customer's dual demand for security effects and minimum hardware configuration, trend technology pioneered cloud security technology in July this year, surpassing traditional code ...

Tcl's founder, academician of the American Academy of Engineering, and ACM fellow John Ousterhout are currently teaching at Stanford University, and his main research projects in recent years have been ramcloud--memory clouds. As the name suggests, Ramcloud is such a new data center storage system, which is a large-scale system composed of thousands of ordinary server main memory, at any time, all information is stored in these fast dram (dynamic random access memory, commonly known as memory), Memory replaces the traditional system in the hard drive, the hard drive only ...

People who often watch TV should remember this ad: "You can hear the history of 132 years, you can see the history of 170 years ..." Modern people retain more personal memories than their ancestors did, and even though we have more memories than our parents. " Until the http://www.aliyun.com/zixun/aggregation/16333.html ">90 years ago, photography was seen as a big thing rather than a hobby, and buying a camera would cost the average worker 3 ...

"Tenkine Server channel February 26 News" February 25, Intel officially released a new generation of Xeon E7 V2, the tide is also displayed on the platform based on the three new-four-way server nf8460m3, nf8480m3, and eight server 810. Wave the next generation of servers for the application of memory computing needs, in the availability of a large number of enhanced, using 53 highly available technology to achieve from the signal, chip to the component level of the overall fault tolerance, greatly improve the continuity of the system level. Wave at Intel press conference Show 3 E7 ...

The China Railway Customer Service Center website (12306.cn) is one of the world's largest real-time trading systems. At the peak of the Spring festival in early 2012, 20 million people visited the site every day, with a maximum of 1.4 billion clicks per day. A massive influx of simultaneous internet access caused 12306 to be nearly paralyzed. To this end, starting in March 2012, the Railway Corporation (formerly the Ministry of Railways) began research, transformation 12306. June 2012 selected Pivotal GemFire distributed Memory Computing platform Transformation 12306, by the Iron Academy and the Capital Billiton Hongyu (IISI ...

Google is changing the way people think, according to new research, such as Google, which has been known to influence human memory. 　　Betsy Sparrow, a researcher at Columbia University, says Google and other search engines are changing the way people think, for example, we remember fewer things, but we know where to look and find what we want on the Internet. The discussion about whether the Internet has made people stupid is a long-standing one, estimated to be as long as the internet was born. However, for the results of Betsy Sparrow, we can have two kinds of understanding, first, interconnected million ...

In order to avoid the son spent time playing games on the Internet, Dad deliberately added a password on the computer, did not expect his son to "decipher" the password. Helpless, Dad had to dial down the memory card, work or go out with the belt, this led to tension between father and son.　　Yesterday, the family of four road, Mr. Zheng to reporters for help to prevent his son to dye the internet addiction, his approach is appropriate? Zheng Dad introduced, this year, his son Zheng read the first grade. During the summer vacation, in order to avoid the son indulge in playing games, he deliberately put home in the original computer game all deleted, thought this can rest easy. But recently, he accidentally checked the computer's Internet records ...