, Centrino, AMD PowerNow, Transmetta, Intel SpeedStep, Athlon-64, Athlon-X2, Intel Core 2Open it. If not, it will be useless to open it.CupsdCUPS printer support. If there is no printer or another type of printer, you can turn it off.DhcdbdD-BUS system network interface, mainly to provide you with network connection settings, it is strongly recommended to open, unless you use a fixed IP to access the Intern
Networking.Bluetooth, hcid, hidd, sdpd, dund, pandBluetooth-related. if there is no Bluetooth, turn it off.Btseed, bttrackBT-related. if you cannot use BT, you can disable it.CapiISDN hardware support, most users can turn offCpuspeedCPU speed adjustment if you are using Pentium-M, Centrino, AMD PowerNow, Transmetta, Intel SpeedStep, Athlon-64, Athlon-X2, Intel Core 2Open it. if not, it will be useless to o
Among the CPUs currently produced by Intel, Pentium 4 and celon are PC oriented, while Xeon, XeonMP, and Itanium are for workstations and servers. Among them, Itanium is a 64-bit CPU that is completely different from other CPUs. It is not designed for use in existing Windows applications. Although other processors differ in the highest operating frequency, FSB (Front-End bus frequency), and cache capacity, the internal design is basically the same, while ensuring software compatibility. The bigg
memory with the main memory. When executing this command, xxx should replace the memory size in MB.
Nmi_watchdog = 1 this command enables the built-in kernel deadlock detector. It can be used to debug Hard Kernel locks. By executing regular NMI (unblocking interrupt) interruptions, the kernel can monitor whether the CPU is locked and print debugging messages as needed.
Noapic this command tells the kernel not to use the APIC chip. It is helpful for some motherboard With bad APIC (such as Abit
CPU Type V. S. Linux? Urgent ...... -- Linux general technology-Linux technology and application information. For details, refer to the following section. Tmp46_arch_media.iso
|
|
|
|
| \ --------- 'Extension' = ISO 9660 image
|
| \ --------------- Media type (cd/dvd) and number
|
| \ -------------------- Architecture
| I386 = Pentium/Athlon/Xeon
| Ia64 = Itanium 2
| X86_64 = Opteron/Athlon64/Xeon-EM64T
|
| \ ------------------------ Rel
do not have cross-system cross-platform capabilities. Even if the system versions of the two machines are the same, the program cannot run as long as the CPU is different. The program can only run on the compiled machine.
In general, the optimization parameters are set through the export command CFLAGS and CXXFLAGS, and will be automatically read during configure, and the selected optimization parameters will be automatically used during make.
For example, the general Pentium 4 CPU (display mod
many laptopsNow more and more desktops support this feature. If your CPU is: pew.m, Centrino, amd powernow,Transmetta, Intel speedstep, Athlon-64, Athlon-X2, Intel Core 2You should enable it. If you want your CPU to run at a fixed frequency, disable it.
Linux services ):CronSeeAnacron.
Linux services ):Cupsd, cups-config-daemonPrinter problems. If you have a cups-compatible printer driven in fedora, yo
divider = DDR/DDR2 memory bus frequency = DDR/DDR2 memory operating frequency * 2
* Note: If memory divider is not an integer, for example, 4.6, you must set memory divider to 5 to avoid Memory overclock operations.
For amd AM2 athlon 64 3200 +, the CPU frequency is 200 MHz * 10 = 2000 MHz.
If we use DDR2 667 memory
--> The data transmission rate is 667 MHz, the memory bus frequency is 333 MHz, and the memory operating frequency is 166 MHz.--> Theref
Device with low requirements for memory and coverage. It runs a single or a limited number of applications.
Select Standard
Windows CE. net
Windows XP embedded
Windows XP Professional
Full-function ATM
ATM with withdrawal Function
ATM similar to a single-Function Device
System Requirements
When selecting an appropriate operating system, consider the tech
industrial control is to execute more work per command ). The most important thing is that sse2 can handle 128-bit and double-precision floating point mathematical operations. The ability to process more precise floating point numbers makes sse2 a basic configuration for accelerating multimedia programs, 3D processing projects, and workstation tasks. But it is important that the software can be properly optimized and utilized.
3D now! Instruction Set
3 dnow proposed by AMD! Instruction Set shou
Webim Series
In step-by-step webim (1) and (2), we have discussed how to develop a webim and use cache to improve webim performance.ProgramSimulate a large number of user logins to test webim performance.
1.200 users online simultaneously
Test 1 simulates a chat room where 200 users log on at the same time. Each user sends a message at a speed of 1 message/second (due to the delay in processing the network and server, it may be more than 1 second)
Environment Parameters
Operating Sy
Recommendation
Processor
2.2 GHz Pentium IV or athlon
Operating System
Windows Server 2003 with SP1, Enterprise EditionWindows Server 2003 with SP1, Standard Edition
Memory
1 GB
Hard Disk
8 GB of available space
Single Server deployment, medium-sized team
Departments with less than or equal to 50 users are supported:
components
recommended
Variables
$ Releasever: indicates the release version. It is obtained from distroverpkg in [main]. If not, it is determined based on the RedHat-release package.
$ Arch: CPU system, such as i686 and athlon
$ Basearch: Basic CPU system group. For example, i686 and athlon belong to the same i386, and Alpha and alphaev6 belong to the same Alpha.
B. Import the GPG key
Yum can use GPG to verify the package
executable file, assuming we set up a_start symbol, that's multiple.Definition (you can compile a C language program with the-s option of GCC to generate assembly code, see the program entry for assembly code, just the main, about who is the real program intoYou can look at the information [2]).That changed the _start for main, can be compiled normally, but why also appear segmentation fault it? The reason is that source code MANGDOTS.S is written for the platform 32, and I use the processor is
this feature. If your CPU is: pew.m, Centrino, amd powernow, transmetta, Intel speedstep, Athlon-64, Athlon-X2, one of Intel Core 2, you should turn it on. If you want your CPU to run at a fixed frequency, disable it.
Linux services ):CronSeeAnacron.
Linux services ):Cupsd, cups-config-daemonPrinter problems. If you have a cups-compatible printer driven in fedora, you should enable it.
Linux services ):Dc_
obtained from distroverpkg in the [main] section. If not, the RedHat-release package is used for determination.$ Arch, CPU system, such as i686, athlon, etc.$ Basearch, CPU basic system group, such as i686 and athlon belong to i386, Alpha and alphaev6 belong to the same Alpha.
After setting yum. conf, we can enjoy the convenience of yum.
V. RHEL/centos Yum Source1. modify the configuration file2. Impor
, Athlon-64, Athlon-X2, Intel Core 2One of them should beEnableIt. If you want your CPURun at a fixed frequency.CloseIt.
Cron
SeeAnacron.
Cupsd, Cups-config-daemon
Printer problems. If you canCups driven by FedoraCompatible printer, you shouldEnableIt.
Dc_client,Dc_server
Disk cache (distcache)Distributed session cache. Mainly used in SSL/TLSServer. It can be used by Apache. Most desktops shouldCloseIt.
Dhc
package.$arch, CPU system, such as I686,athlon, etc.$basearch, the basic system groups of CPUs, such as i686 and Athlon, belong to the same genus I386,alpha and Alphaev6 Alpha.With the yum.conf set up, we can enjoy the convenience of Yum.Domestic sourceZhong Ke's yum Source:
wget Http://centos.ustc.edu.cn/CentOS-Base.repo
163 of Yum Sources:
wget Http://mirrors.163.com/.help/CentOS-B
Intel is the Intel 865, 875 series, and AMD is the Nvidia Nforce2 series.
Dual-channel memory technology is a low-cost, high-performance solution to the problem of CPU bus bandwidth and memory bandwidth. Now that the CPU's FSB (front bus frequency) is getting higher, Intel Pentium 4 has a much higher demand for memory bandwidth than AMD Athlon XP. The Intel Pentium 4 processor and North Bridge chip data transfer using QDR (Quad data Rate, four data t
spend time in core mode
System call 9.833 microseconds6.833 based on sysenter/sysexit instruction microseconds
System call based on interrupt int n instruction 17.500 microseconds 7.000 microseconds 2: Comparison of the speed of int 0x80 and sysenter execution on various CPUs CPU int0x80 Sysenter
Athlon XP 1600+ 277 169
800MHz Mode 1 athlon279 170
2.8GHz P4 Northwood ht1152442 The above data are the average CPU clock cycles spent on 100,000 getppid (
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.