IPhone simulator = intel
IPhone = armGreat difference,
Intel's current processors are mainly in the IA architecture,
IA-32 is commonly known as x86, including desktop processor series (SAI Yang, Pentium, core, etc.) and server processor Zhiqiang (Xeon) series;
IA-64 is a 64-bit processor independently developed by Intel for itanium (anteng) and subsequent products itanium 2, for the high-end server
: Linux 2.6.18
Server configuration: Intel (R) Xeon (TM) CPU 3.40GHz 4 CPUS
Memory: 6GB
Nodejs version: v0.4.12
Client test environment:
Contract Tool: Apache 2.2.19 's own AB test tool
Server System: Linux 2.6.18
Server configuration: Pentium (R) dual-core CPU E5800 @ 3.20GHz 2CPUS
Memory: 1GB
Single Thread node code:var http = require (' http ');var server = Http
passion that drives it forward. Once new hardware is available, the Linux kernel can be quickly improved to accommodate it. For example, the Intel Xeon microprocessor has been in existence for weeks, and the new Linux kernel is coming up. It is also used on Alpha, MAC, PowerPC. Linux can be run even in the hand machine, a rare field. As it was born in 1991, Linux is striding towards the new century with the same enthusiasm.As for Linus himself, he ke
core Power 4 processor. The difference, however, is that the dual core Power 4 processor is a X86-architected server processor. AMD and Intel, on the other hand, unveiled their dual-core processor program in 2004, and only 2005 years after the launch of their dual-core processors. AMD's dual-core processors include dual-core Opteron server processors and dual-core Athlon 64 processors, while Intel's dual-core processors also include dual-core Pentium
IPhone Simulator = Intel
The IPhone = ARM is a big difference,
Intel's current processors are primarily IA architectures,
IA-32 is commonly known as x86, including desktop Processor series (Celeron, Pentium, core™, etc.), as well as server processor Zhi Qiang (Xeon) series;
IA-64 is Intel's independently developed 64-bit processor for Itanium (Itanium) and Follow-on products, Itanium 2, for high-end ser
Changes in Exchange 2007 include the adoption of a unified inbox, support for voice mail, and improved Outlook client e-mail software.
① immediately upgraded the company very few. Gartner's survey data show that one-fifth of Exchange users are still using Exchange 5.5, which has a "long" history of 9 years. This means that most companies will not start upgrading their existing Exchange systems until 2008.
② you want to run Exchange 2007, you must have 64-bit servers and 64-bit versions of Window
Changes in Exchange 2007 include the adoption of a unified inbox, support for voice mail, and improved Outlook client e-mail software.
① immediately upgraded the company very few. Gartner's survey data show that one-fifth of Exchange users are still using Exchange 5.5, which has a "long" history of 9 years. This means that most companies will not start upgrading their existing Exchange systems until 2008.
② you want to run Exchange 2007, you must have 64-bit servers and 64-bit versions of Window
to improve product design. Similarly, with 64-bit computations, digital content creators, including three-dimensional animators, digital artists, and game developers, can significantly reduce the time it takes to render a three-dimensional model in digital form. In the field of scientific computing and High-performance Computing, Windows Vista x64 Edition will contribute to applications such as oil and gas exploration, seismic analysis, computational fluid dynamics, and scientific visualization
Changes in Exchange 2007 include the adoption of a unified inbox, support for voice mail, and improved Outlook client e-mail software.
① immediately upgraded the company very few. Gartner's survey data show that one-fifth of Exchange users are still using Exchange 5.5, which has a "long" history of 9 years. This means that most companies will not start upgrading their existing Exchange systems until 2008.
② you want to run Exchange 2007, you must have 64-bit servers and 64-bit versions of Wind
, Pentium E series, Conroe based on Celeron architecture, dual-core Yonah based on Xeon architecture, Xeon3000, 3200 series.
AMD Series: Athlon64 series, Athlon64 X2 series, Athlon64 FX series, Turion64 series, Turion64 X2 series, K8 architecture Sempron series, single core SH-C0 series after opterons version, Dual-core Opteron series.
2, added to the Winbond W83627EHF/DHG detection chip Second Circuit
10000-turn hard drive can also be very helpful, but you need to be more careful with the design of the cooling system.
3. Use SCSI. Although in recent years, SCSI hard drive is far less than the previous so scenery Unlimited. But no one can deny that SCSI hard disks have the advantage of an IDE hard drive in performance. In the past, the SCSI left a high price impression, but in fact, the situation has changed considerably. Note, however, that if you decide to upgrade to a SCSI hard drive, you
, namely Hadoop archive,sequence file and Combinefileinputformat. Please refer to http://dongxicheng.org/mapreduce/hdfs-small-files-solution/for specific practices.5. Create an indexTesting to create an index does not improve query speed.2.3 Based on partition optimizationReference http://www.tbdata.org/archives/17653.1 Test environment
Machine
Use
System
Hardware configuration
Hadoop1
Master
CENOS5.S, Linux version 2.6.18-194.32.1.el5
Zeng04, "QoS-aware middleware for Web Services Composition"
Experiment settings Hardware and basic software: a cluster of PC with the same configuration: Pentium III 933 MHz with 512 Ram, Windows 2000, Java 2 Enterprise Edition v1.3.0, Oracle XML developer kit, connected by LAN through 100 Mbits/sec Ethernet cardsApplication Software: IBM's Web Services Toolkit (Develop Web Service), agflow, which uses IBM's optimization solutions and Library (OSL)
servers and supercomputer markets. In principle, the x86 architecture is based on CISC, and its problems are many, and the efficiency and direction of development are problematic. But Intel is not worried that, after delving into RISC, Intel has begun to boldly introduce RISC design ideas into CISC-based x86, adding additional "translation layers". The external CPU is still x86, but the internal operation is more similar to the streamlined RISC, so the CPU performance is greatly improved.Atom w
architecture parameter is 1.50, the Pentium M series architecture parameter is 1.6, and the latest Conroe architecture parameter is 1.9.
3. cache is the place where the CPU calls data directly. The cache speed is about 10 times faster than the current memory, and there is a lower latency. The greatest impact on CPU performance is the second-level cache. Based on the 2 m cache of P4 630, the cache parameter is 1.0. The performance is improved by about
local APIC receives the interruptions from these five types of local interrupt sources, the local vector table (lvt) the configured interrupt delivery protocol sends the interrupt information to processor core.
Address: 0xfee00330 ~ 0xfee00370
5) how to determine whether a local APIC exists or not?
MoV eax, 1
Cpuid
If edX bit9 = 1 is returned, it exists; If bit9 = 0, it does not exist.
6) How to enable/disable local APIC?
Two methods:
1. APIC global enable/disable flag in MSR ia32_apic_base
2.
into 16 KB sub-ranges, each register has 8 ranges.
3,RegisterIa32_mtrr_fix4k_c0000ToIa32_mtrr_fix4k_f8000-- Ing the address range of eight 32 K bytes, from c0000h to fffffh. This range is divided into 64 4 K byte sub-ranges, and each register has 8 ranges.
Table 11-9 shows the relationship between the fixed physical address range and the corresponding mtrr domain. Table 11-8 shows the memory type encoding of mtrr.
11.11.2.3 variable range mtrr
The Pentium
Explorer 6 SP1 or Internet Explorer 7Microsoft Visual Studio 2005 or Microsoft Visual Studio 2008 (for the code samples)MicrosoftOffice 2003 with SP3 or the 2007 Microsoft Office System with SP1 (ifYou want to use Microsoft Dynamics CRM for Microsoft Office outlook)Microsoft Windows Server 2003 or Microsoft Windows Small Business Server 2003Microsoft SQL Server 2005Microsoft Dynamics CRM 4.0 Server license (Workgroup, professional or Enterprise Edition)Computer/processor: Dual 1.8-gigahertz (GH
optional.
[*] Enable MPs table
// Enable multi-core/multi-CPU systems to support ACPI. Optional.
[] Support for big SMP systems with more than 8 CPUs
[] Support for extended (non-PC) x86 platforms
// I am an x86 Platform and do not need to support other platforms
[*] Single-depth wchan output
// It is best not to close proc-related items
[] Paravirtualized guest support --->// Virtual client support, no use, not selected
[*] Disable bootmem code
// This optimizes some complex initial memory al
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