Key words:
Pentium, processor, single instruction multiple data flow extension instruction, SSE, instruction set
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With the release of the Intel Pentium III processor, many new features have been brought to the program designers. With these new features, programmers can create better products for users. Many of the new features of Pentium III and Pentium III Xeon (Xeon processors) enable her to ru
Cache cohernce with multi-processor
Author: BNNReposted from: CPU and compiler of linuxforumAfter writing an article about cache coherence, I found that there was a good article about bnn2 years ago. I knew it was not so troublesome to write it myself :)
Recently work with Dual CPU kernel part. For Dual CPU, or we say, multi-processor, the big challenge part for a kernel is how to handle the cache coherence
Interrupt handling of ARM processors1) There are 8 operating modes in the arm processor (and the CPU handles different task modes), typically 5 Abnormal mode, In these 5 Modes There are three interrupt mechanisms, namely the FIQ mode (High priority interrupt mode);IRQ Mode (Low-priority interrupt mode), and one that is the SVC mode (the mode generated when the reset or soft interrupt (SWI) instruction executes)2) First understand what the interrupt m
Multi-tasking operating systemThe operating system provides a mechanism for the virtual processor, which gives the process an illusion that the process feels like it is monopolizing the CPU. The operating system kernel must pass reasonable process scheduling to ensure this illusion, so that the operating system resources to get the maximum utilization.It is this virtual processor mechanism that allows the o
ARM processor status
The ARM microprocessor generally has two working states and can be switched between them:
The first type is the arm State. At this time, the processor executes the 32-bit arm command;
The second is the thumb State. At this time, the processor executes the 16-bit half-aligned thumb command.
During the execution of a program, the microprocessor
ARM Processor ModeThere are 7 modes of operation for ARM processors:
L user mode (USER,USR): Normal program execution mode
L Fast Interrupt Mode (FIQ,FIQ): For high-speed data transfer and channel processing
L external Interrupt mode (IRQ,IRQ): for normal interrupt handling
L Privileged Mode (SUPERVISOR,SVE): A protected mode for use by the operating system
L Data Access Abort mode (ABORT,ABT): for virtual storage and storage
Q: Often in newspapers and magazines to see the word dual core processor, what is the dual core meaning? What's the benefit?
A: In simple terms, a dual-core processor is the integration of two CPUs on a single wafer. So what is a dual-core processor? What does the concept behind a dual-core processor mean, in short, a
Processor Scheduling Model and Scheduling Algorithm in OSProcessor Scheduling Model and Scheduling Algorithm in OS
Scheduling level
1.1. Advanced scheduling (long-range scheduling and Job Scheduling)
Function: According to an algorithm, the jobs in the backup queue in the external storage queue are transferred to the memory, and the job is the operation object.
Job: A more extensive concept than a program. It not only contains common programs and data
Tags: appear single processor ROC own difference purpose BSP Rule roadOriginal link: http://blog.scoutapp.com/articles/2009/07/31/understanding-load-averagesYou may have a good understanding of the load average (load averages) for Linux. The load mean can be seen in the uptime or the top command, and they may appear like this:Many people will understand the load mean: Three numbers represent the average system load (one minute, five minutes, and 15 mi
DB2 exception processor is still unfamiliar to many new users who have just been familiar with the DB2 database. Next we will introduce the DB2 exception Processor type for you. I hope it will help you.
DB2 exception Processor type (handler-type) has the following types:
After the processor operation is complete, CON
Intel Core i5 and i7 can be said to be the most mainstream desktop processor in the market, with a large number of laptops and desktops using these two processors. So, if you want to buy a computer, should consider i5 or i7? Look at the major differences between them.
Hyper-Threading
Hyper-threading means that each processor core can handle two threads rather than one, with better performance
Processor designers always focus on different performance promotion strategies in order to perform as many computations as possible within each clock cycle. Faster frequencies, larger data paths, and different instruction sets improve performance. However, one aspect of performance improvement that is most likely to cause misunderstanding is the impact of hyper-threading on processor performance.
Hyper-Thr
I will upload my new book "self-writing processor" (not published yet). Today is the second article. I try to write it every Thursday.
Chapter 2 processors and MIPS
It's time!
-- Hu Feng 1949
Let's start reading this book with a poetic sentence.
Starting from January 1, November 15, 1971, Intel released the world's first single-chip microprocessor, 4004.1.1 simple computer model
The computer is very complicated. It is terrible and complicated to liste
Application Analysis of Embedded Linux in network processor-Linux general technology-Linux programming and kernel information. The following is a detailed description. Introduction
In the last 24 months, supplier organizations were facing economic downturn, coupled with the emergence of network processors (multi-core processors) by companies such as Intel IXP and IBM Power NP, Raza, Cavium and Xilinx, this gives Linux more control and management capa
, conditional variables, counting semaphores, mailboxes, and event flags) required by the embedded system ), it also has flexible scheduling policies and interrupt processing mechanisms, so it has good real-time performance. Compared with the eCos operating system in Embedded Linux, ECOs is more suitable for devices that process real-time signals, such as mobile communication and WLAN communication equipment development.The ECOs kernel scheduling mechanism is shown in the following table:
1. Server processor clock speed
The clock speed of the server processor is also called the clock frequency. The unit is MHz, which indicates the computing speed of the CPU. CPU clock speed = frequency X frequency doubling coefficient. Many people think that the clock speed determines the CPU running speed. This is not only one-sided, but also a misunderstanding of the server. So far, there is no definite f
Intel released the Xeon E5-2600/1600 series processor in early March, following the famous Tick-Tock strategy. The generation of Xeon E5-2600 series still follows the SandyBridge architecture adopted by single-channel Xeon E3, but because E5 is a product for dual-channel applications, it is named "SandyBridge-EP ". As Intel's main product, Xeon E5-2600/1600 series processor is mainly to provide better cloud
I will upload my new book, "Write My Own processor" (not yet published), today is the third article. I try four articles a week.MIPS instruction set architecture since the advent of the 80 's. has been upgrading, from the initial MIPS I to MIPS V, to support the expansion module MIPS32, MIPS64 series, and integrated code compression technology microMIPS32, microMIPS64. Each MIPS Isa is a superset of its previous, no matter what omission, just add new
This is an article that has been late for a long time. Article If I did not see the article "esframewok-based client and Client Communication" written by mediar today, I may not remember to write this blog that should have been published very early, it can help esframework researchers/users better use esframework. The mediar friend's article describes how to forward p2pmessage through the server. mediar manually implements a processor. In fact, esfram
The Updater Application Block provides a post-processing architecture that allows developers to create a post-processor after successful upgrade. The post-processor implements the IPostProcessor interface.. Net class, which is used to execute one-time post-installation tasks, such as writing data to the Registry, creating a message queue, or other tasks that cannot be completed by simply copying application
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