allo speed test

Copy CodeThe code is as follows: Set_time_limit (0); $str = Str_pad ($STR, 512, "0"); $file = fopen ("./temp", "A +"); $i = 0; $bytes = 1000000000; $mygabyte = $bytes/1000000; echo "Test start. Waiting ... "; $starttime = time (); while ($i $i + = fwrite ($file, $STR); } $endtime = time ();$usetime = $endtime-$starttime;$write _xiaolv = $bytes/$usetime;$myga _xiaolv = $mygabyte/$usetime;echo "Create 1GB File Use Time". $usetime. "Seconds\n";echo "

When Internet speed is found to be slow, people usually first test their computer to the network service provider (often referred to as the "last kilometer") network connection speed. In websites that can be used to test broadband speeds, speedtest.net may be the most widely used. Speedtest.net's work is not complicate

Sometimes when we do maintenance, there will always be similar to the IO is particularly high, but can not be determined to be an IO bottleneck or improper setting of software parameters caused hot disk problems. This is usually the time to know the disk read and write speed, to make the next decision.Here are two methods of testing:(1) using the Hdparm commandThis is a command that is used to get the parameters of the ata/ide hard drive and is writte

Linux Command Line Test speed When you find that the Internet access speed slows down, people usually first test their computer's network connection speed to the network service provider (usually known as the "Last Mile. Speedtest.net may be the most widely used website to

Copy codeThe Code is as follows:Set_time_limit (0 );$ Str = str_pad ($ str, 512, "0 ");$ File = fopen ("./temp", "a + ");$ I = 0;$ Bytes = 1000000000;$ Mygabyte = $ bytes/1000000;Echo "test start. waiting ...";$ Starttime = time ();While ($ I $ I + = fwrite ($ file, $ str );} $ Endtime = time ();$ Usetime = $ endtime-$ starttime;$ Write_xiaolv = $ bytes/$ usetime;$ Myga_xiaolv = $ mygabyte/$ usetime;Echo "create 1 GB file use time". $ usetime. "secon

The simplest way to test the computer's network speed is to directly use ping to solve this problem, For example, in Nanchang, you only need to enter Ping 202.101.224.69-T in the running state to view your network speed, If you are in Jiangsu, ping the DNS server address in Jiangsu. As follows:202.102.29.3202.102.13.141202.102.24.35 In addition, the DNS server ad

This is a dedicatedProgramming Language/Compiler speed test/compare the questions given by the website (http://shootout.alioth.debian.org, The following are efSource code: // Fannkuchpublic final class startup class This efProgramIt takes about 37 seconds to run on my machine.The optimized vc6 takes about 5.8 seconds. Other Programming Language/compiler performance, please see here: http://shootout.al

I test the configuration: i5 3210M 2.9GHz DDR3 8GB.Use a BMP picture of 1000 * 750, the operation is floating point multiplication, copy, repeat 10 times:The first Test, the numpy array loop:def Iterorigin (imgdir): = Image.open (imgdir) = numpy.asarray (img) = numpy.zeros_like (img) for in xrange (img.shape[0]): for in xrange (img.shape[1 ]): = img[r][c] * 1.2Test Result:

Time is used for timing. dd is used for copying, reading from if, and writing to. If/dev/zero does not produce IO, so it can be used to test the pure write speed. Similarly, of/dev/null does not generate IO and can be used to test the pure read speed. Bs is the size of each read or write, that is, the size of a block.

how to correctly test the speed of a room. The first option is also the best way to ping values:target IP, or domain name can be, example [Url]www.idcdns.com[/url] 58.56.19.109Start menu, run as input cmd, enter "ping 58.56.19.109-t" or "ping" in the DOS interface[Url]www.idcdns.com[/url]- T "Note that if there is no-t then the ping value is only 4 not representative, the-t parameter is to let the ping cont

CentOS raid Hard Drive Speed Test Syntax: hdparm [-partition hiiqttvyyz] [-a Note: hdparm can be detected to display and set the parameters of the IDE or SCSI hard disk.Parameters:-A -A -C -C: detects the power management mode of the IDE hard disk.-D -F writes the data in the memory buffer to the hard disk and clarifies the buffer.-G: displays the disk's magnetic track, Head, magnetic area, and other parame

A complete traversal speed test: Import Java. util. iterator; The following are the test results of the three groups: Batchfile code List Type Time ( Nanoseconds ) -------------------------------------------------Arraylist For 1189258 Arraylist iterator 2365594 Shortlist For 152396254 Parameter List iterator 23408

When Internet speed is found to be slow, people usually first test their computer to the network service provider (often referred to as the "last kilometer") network connection speed. In websites that can be used to test broadband speeds,speedtest.net may be the most widely used.Speedtest.net's work is not complicated:

of HTTP requests Today's Web pages have multiple images, CSS external file links, JavaScript external script links. So when accessing a Web page, the browser needs to request these files to the server multiple times. There is a lot of time difference between the request and the load. In particular, some Web pages have multiple small pictures, icon buttons of the page, how many pictures, the browser will need to request how much these small files, many will request these small image files w

have been resolved for 0.1 million times, because my Shared Pool space is not large and contains a large amount of 0.1 million pieces of information. According to the FIFO principle, you can see that, all the SQL statements I have found are SQL STATEMENT records starting from more than 92000. We know that these SQL statements are similar and there is no need to parse 0.1 million times, that is, each statement is parsed once. This PROC1 does not use variable binding. This is where we can optimiz

Article Title: linux testing hard drive read/write speed. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Time is used for timing. dd is used for copying, reading from if, and writing to. If =/dev/zero does not produce IO, so it can be used to test the pure write

This article mainly introduces the javascript page rendering speed test script to calculate the time required by the browser to render HTML pages. For more information, see The Code is as follows: /* Get the start timestamp of rendering and save it in the array PAGE_SPEED_TIME */

This article mainly introduces the speed test and comparison code for various encryption algorithms and Hash algorithms in PHP. for those who select an encryption algorithm, they can be considered as a performance factor, if you need it, you can refer to the PHP Hash algorithm which is usually used. Currently, MD5 is sometimes not safe, so you have to use other algorithms in Hash_algos (). The following is

Tip: you can modify some code before running Js server speed test code Tip: you can modify some code before running

Bought an SSD hard disk, just want to compare with ordinary mechanical disk, because the desktop is installed Ubuntu system, so you want to use the Linux command simple testThe following are SSD performance data:Test write:[Email protected]:~ > Time dd if=/dev/zero bs=1024 count=1000000 of=1gb.file1000000+0 Records in1000000+0 Records out10 24000000 bytes (1.0 GB) copied, 3.78724 S, mb/sreal 0m3.789suser 0m0.839ssys 0m2.527s Read data from null to file, block size 1024 Qty 1000000Test read:[