am2 processors

time, you can get things in it at any time. If your second-level cache is small, you have to stop your car and pick it up in the trunk.First, let's take a look at the level 1 cache. At present, most of the mainstream processors have Level 1 cache and level 2 cache, and a few high-end processors also integrate Level 3 cache. The level-1 cache can be divided into level-1 Instruction Cache and level-1 data ca

Basis of judgment:A physically encapsulated CPU (judged by physical ID) can have multiple cores (differentiated by Core ID).Each core can have multiple logical CPUs (judged by processor).One core implements this core's own hyper-Threading technology through multiple logical CPUs.The CPU cores entry contains the number of cores in the same physical package.The siblings entry lists the number of logical processors in the same physical package.The proc f

(assuming a value of 1) in its own local memory a. When thread A and thread B need to communicate, thread a first flushes its local in-memory modified x value to main memory, when the X value in main memory becomes 1. Then, thread B goes to main memory to read the x value of the updated thread A, at which point the X value of the local memory of thread B also becomes 1.Overall, these two steps are essentially thread a sending a message to thread B, and the communication process must go through

through main memory. JMM provides a memory visibility guarantee for Java programmers by controlling the interaction between main memory and the local memory of each thread.Re-orderIn order to improve performance when executing programs, the compiler and processor often reorder instructions. There are three types of reordering: The re-ordering of compiler optimizations. The compiler can reschedule the execution of a statement without changing the semantics of the single-threaded procedu

pipeline that shares the execution engine with the first level of the pipeline. The designer wants a second thread or task-related instruction to be queued in a single pipe, and then run the instructions by executing the core when the first instruction pipe is idle. Intel has developed hyper-Threading technology, which enhances multithreading parallel processing on computer systems. The second-level instruction pipeline is included in the processor core, and the operating system recognizes two

the execution thread to be unable to guarantee when the lock will be taken, and some threads may have to wait a long time. With the increasing number of computer processors, this "unfairness" problem will become increasingly serious. The queued spin lock (FIFO Ticket spinlock) is a new kind of spin lock introduced in Linux kernel version 2.6.25, which solves the problem of "unfairness" of traditional spin lock by saving the order information of execu

version was not perfect and did not offer a download trial. Until January 10, 09, Microsoft released a beta version of Windows Server 2008 R2 on its website, offering users a 30-day free download trial. Beta version includes Standard Edition, Enterprise Edition, data Center Edition, web version, itanium® version five, the test edition only provides the English language. Although the Windows Server 2008 R2 is not intrinsically different from win 2008, the basic features are of course the same,

mention; the SIS chipset has sis740/745/746/748 and sis650/651/648/655, as long as the South Bridge is SIS962 above also no problem. The above mentioned three kinds of South Bridge are three of their first support USB2.0 of the South Bridge chip, as long as the motherboard support Usb2.0,bios settings in the boot Device option will have a USB device optional, you can support U disk boot. After that motherboard, whether it is Intel's 775 platform or AMD's 754/939/

attention to the configuration and performance of the motherboard, do not want to use the product of too old, then you can think of the method from the optical storage device. If you have two or more IDE hard drives that are used primarily for data backup, you can think of methods from the IDE interface. The implementation of the three major solutions, the next will give you a detailed introduction. Start with the motherboard: decisively discard the single IDE Whether it's a dual hard drive

ADB shell am Use this command to start activity, services, send broadcast, etc. from the cmd console:1C:\users\administrator>adb shell am2 usage:am [subcommand] [options]3 4Start an activity:am start [-d] [-W] 5-d:enable Debugging6-W:wait forlaunch to complete7 8Start a service:am startservice 9 TenSend a broadcast intent:am broadcast One AStart an INSTRUMENTATION:AM instrument [flags] --R:print Raw Results (otherwise decode Report_key_streamresul

AM2 processor After some of the adjustment of the column, Athlon64 3000+ and Athlon64 X2 3800+ has become the AMD platform cost-effective pronoun, and the matching NF5 series motherboard has become the focus of attention. Recently, some buyers of NF5 motherboards reflect that in the dual-channel DDR2 667 specifications of the memory will encounter serious compatibility problems, the forum for help Voice. If you're being bothered by NF5 motherboard and

, consider whether to reduce this value by means of an optimization algorithm. If the server is a database server, the reason why the processor\% User time is large is probably that the database is sorted or the function operation consumes too much CPU time, so you can consider optimizing the database system. System\ Processor Queue Length is used for bottleneck detection. %total the percentage of time that all processors in the system a

We can use/proc/cpuinfo to view CPU information. This file contains the data section of each processor on the system. There are six entries in the/proc/cpuinfo description for multi-core and hyper-thread (HT) technical checks: processor, vendorid, physicalid, siblings, coreid and cpucores. We can use/proc/cpuinfo to view CPU information. This file contains the data section of each processor on the system. There are six entries in the/proc/cpuinfo description for multi-core and super-thread (HT)

processor bottleneck. Monitor processor/% Processor time, processor/% User time, and% Privileged time for more information. processor/% User time refers to the CPU times consumed by non-core operations of the system, and if the value is large, consider whether to reduce this value by means of an optimization algorithm. If the server is a database server, the reason why the processor/% User time is large is probably that the database is sorted or the function op

In the field of processor chip manufacturing, Intel is a well-deserved industry giant and almost monopolized PC processors. The Wintel alliance with Microsoft even dominated people's PC consumption habits. Mobile chip vendor ARM has begun to enter the server market in an attempt to break Intel's monopoly on the market. Although ARM processors have a 90% market share of mobile phone

The ARM processor may bring a stack server with thousands of nodes, and the chief architect of the RedHat ARM predicts the News Service from IDG: redHat, an open-source software vendor, is paying close attention to the development of 64-bit ARM processors on servers to build professional capabilities on the new platform of data centers. Ldquo; you cannot see us in today's commercial product market, but we have built capabilities that surpass some of

This chapter is selected from the Intel official documentation and translated by myself. Note that the following English word cache is used. If C is in uppercase, that is, cache, it indicates the term "cache". If C is in lowercase, that is, cache, indicates the verb -- indicates saving data to a high-speed buffer storage. Intel 64 and the IA-32 architecture provide the ability to manage and enhance the execution of multiple processors connec