Take the CentOS system as an exampleFirst, the CPUCat/proc/cpuinfoHere is my CPU information, with 4 messages stating there are 4 logical CPUs, but each physical ID is the same, stating that there are only 1 physical CPUs.1. The "Physical ID" and "core ID" of multiple logical CPUs are the same, indicating that hyper-threading is turned on.2. There is an LM tag in the flags stating that it is a 64-bit CPU3, my processor has 4 different numbers, and belong to a physical ID, while the CPU cores val
set against Intel, forcing x86 to change.
Through decades of technology accumulation, x86 server in the field of server status is almost alone and defeated. The small and flexible x86 server is widely used in the market, and it can be used in many fields such as file, print, communication, web, email, database and application services in the Internet and LAN.
The biggest feature of the x86 server is that it can be compatible with Windows operating systems, all with Intel's CPU. and Intel's x86
-platform-software-stack-mpss#lx34rel If we use Intel's compilers (we should be using Intel's):Download and install Intel Parallel Studio XE 2015 with performance analysis tools, compilers, high-performance libraries, parallel programming tools, and more to optimize and upgrade Xeon Phi. Cilk PLUS,OPENMP,TBB multithreaded programming and vectorization techniques have been implemented on Xeon
parameter value, the throughput of the serverTime per request:27.310 [MS] (mean) # #用户平均请求等待时间Time per request:0.273 [MS] (mean, across all concurrent requests) # #服务器平均处理时间, which is the reciprocal of server throughputTransfer rate:983.34 [Kbytes/sec] Received # #每秒获取的数据长度 Connection times (ms) min MEAN[+/-SD] median Max connect: 0 1 2.3 0 Processing: 6 25 3.2 25 waiting: 5 24 3.2 25 total: 6 25 4.0 25 Percentage of the requests served within a certain time (MS)50% 25 # # 50% request
] (mean) # #每秒多少请求, this is a very important parameter value, the throughput of the serverTime per request:27.310 [MS] (mean) # #用户平均请求等待时间Time per request:0.273 [MS] (mean, across all concurrent requests) # #服务器平均处理时间, which is the reciprocal of server throughputTransfer rate:983.34 [Kbytes/sec] Received # #每秒获取的数据长度 Connection times (ms) min MEAN[+/-SD] median max connect: 0 1 2.3 0 16 processing: 6 25 3.2 25 32 waiting: 5 24 3.2 25 32 total: 6 25 4.0 25 Percentage of the requests s
("TCP", "" "," localhost:50001 "),//Then the Dial wil L succeed, have simultaneously connected to itself.//this can only happen when we is letting the kernel pick a port (l addr = = nil)//when there was no listener for the destination address.//It's hard to argue tHe is anything other than a kernel bug. If we//See this happen, rather than expose the buggy effect to users, we//close the FD and try again. If It happens twice more, we relent and//use the result. See also://http://golang.org/issu
Installation
go get github.com/PuerkitoBio/goquery
How to use
Read page content generate document
res, e := http.Get(url);if e != nil { // e}defer res.Body.Close()doc, e := goquery.NewDocumentFromReader(res.Body)if e != nil { // e}
Use selector to select page content
doc.Find("#houseList > li").Each(func(i int, selection *goquery.Selection) { // 房屋名称 houseName := selection.Find("div.txt > h3 > a").Text()}
Or you can use the direct selection method
// 获取经纬度houseLat, _ := doc.Find("#m
ends.Let's take a look at the process status of my Linux testing machine:
[root@home tmp]# ping www.baidu.com > /dev/null [1] 2759[root@home tmp]# pstree -psystemd(1)-+-agetty(157) |-agetty(163) |-avahi-daemon(129)---avahi-daemon(134) |-avahi-dnsconfd(125) |-crond(121) |-dbus-daemon(130) |-haveged(128) |-ifplugd(126) |-nginx(226)---nginx(227) |-ntpd(223) |-python(2727) |-rngd(124) |-sshd(216)---sshd(2683)---bash(
HP-UX:Pre-collection:1) BDF2) Strings/etc/lvmtab3) Lvdisplay [LV name]: lvdisplay/dev/vgs70/lv0144) Vgdisplay [VG]: VGDISPLAY/DEV/VGS70 PE size is the smallest allocation unit5) swlist-l product |grep-i ONLINEJFS: ONLINE-JFS is a tool that can be used to expand the file system online. It's very useful. With it, you don't have to stop applying when you're expanding .Operation:Lvextend-l 2690m/dev/vgs70/lv014 Extended Logical DiskFsadm-f vxfs-b 2690/hom
that can be used for a single system or cluster system, and we only use its disk testing capabilities. Webbench and NetBench are two commonly used software in server evaluation, which focuses on the performance evaluation of the server CPU subsystem, while the latter focuses on the performance evaluation of the IO subsystem. We installed the Microsoft Windows 2003 Standard Edition (Chinese, 32bit) on the server above, installed the driver of each hardware correctly, optimized it, closed the unw
China. It should be noted that IBM and HP's 8-way servers are all using Intel's Xeon MP processor.
Now, however, this situation has changed. First, Sun, which had only supported the SPARC architecture, has now put down its posture, forming a close alliance with AMD and decided to launch a 8-way server based on the Opteron processor later this year. Li Zhiwen, Sun's Greater China market manager, said that Sun's 8-way Opteron server would have a good p
Key words:
Pentium, processor, single instruction multiple data flow extension instruction, SSE, instruction set
Profile:
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
Today, the reporter recommended a Lenovo R510G6 server, which is a 1U rack server that is small and lightweight and suitable for small and medium-sized enterprises who do not have much office space. The latest price is 25500 yuan. Lenovo full R510G6S50501G73N soft guide this server uses a 64-bit dual-core Intel Xeon TM50503.0GHz processor, supports a maximum of 2,
Today, the reporter recommended a Lenovo R510 G6 server, which is a 1U rack server that
, the computer has added an x87 chip to improve the floating point data processing capability. Later, the x86 Instruction Set and the x87 instruction set will be collectively referred to as the x86 instruction set. Although with the continuous development of CPU technology, Intel has successively developed the new i80386 and i80213to the past PII Xeon, piII Xeon, Pentium3. the Pentium 4 series and
1. view the production system version# Uname-
Linux applications-test-game 2.6.9-11. elsmp #1 SMP Fri May 20 18:26:27 EDT 2005 i686 i68
6 i386 GNU/Linux
# Cat/proc/version
Linux version 2.6.9-11. elsmp (bhcompile@decompose.build.redhat.com) (GCC version
3.4.3 20050227 (Red Hat 3.4.3-22) #1 SMP Fri May 20 18:26:27 EDT 2005
# Cat/etc/issue
Red Hat Enterprise Linux as Release 4 (nahant update 1)
Kernel R on an M
# Cat/etc/RedHat-release
Red Hat Enterprise Linux as Release 4 (nahant upd
I. server environment and Topology Planning1.1. Hardware server information and allocation
Server Type
Computer Name
IPAddress
Hardware configuration
Virtual Machine
Excas1
192.128.20.11
CPU Intel (r) Xeon l5520 2.27 GHz Memory 4 GB
Virtual Machine
Excas2
192.128.20.12
CPU Intel (r) Xeon l5520 2.27 GHz Memory 4 GB
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