ooma speed test

Recently bought a 256GB SSD SSD, want to test the write speed, so the following operation.Part of the code:1Gettimeofday (start, NULL);2 intFD = open ("Test1.dat", o_rdwr|o_creat);3 if(FD 0){4printf"Open error!\n");5 return 0;6 }7 //Lseek (FD, 0, seek_set);8 Write (FD, PData, Data_len);9 Close (FD);TenGettimeofday (end, NULL); One A //display elapsed time in US -diff =1000000* (END.TV_S

I. File Read speed In Linux, reading files is implemented by calling sys_read (FD, Buf, count) by the system. Therefore, to increase the speed, it is the simplest way to call the sys_read encapsulation, for example, read () or fread () is used directly (). Below are some tests in Linux. First create a 130m data file dd If =/dev/Zero of = data BS = 1024 k count = 130 [Dd If =/dev/Zero of = data BS = 1024 k c

File: vgaspeed.txtName: test the speed of the vga12h ModeAuthor: zyl910Blog: http://blog.csdn.net/zyl910/Version: V1.0Updata: 2006-11-14 Download (note the modified extension) Introduction~~~~I 've written a lot of screen writing code in DOS, but I never thought of a problem-there are multiple VGA operating speeds. Therefore, I wrote a small program to test the V

longer to perform the first CRUD operation, and the later time will be much shorter. This is because Microsoft SQL server has a cache and you can remember our previous operations, the execution speed will be greatly improved in subsequent operations. Next let's take a lookSqldatareader: At this time, if the database table suddenly adds records, let's look at the query time: Result: adding a record does not affect the database query.

In many cases, we need to test the uplink and downlink bandwidths of Linux servers. Speedtest.net may be one of the most widely used websites that can be used to test the bandwidth speed ;. Speedtest.net provides a command line version mdash; speedtest-cli. The following shows how to use speedtest-cli in Linux command line to

Use JS to test the target website's open response speed and js target I wrote a simple test directory website opening speed item using JS. Note that this is only the speed at which the local directory website is opened. It does not mean that other users can open the director

Speedtest.net server list ...Selecting best servers based on ping ...Hosted by ShenZhen Telecom (ShenZhen) [0.00 km]: 1118.768 msTesting download speed ....... ....... ................. .............................download:4.65 Mbit/sTesting upload speed ................................................................................................upload:9.15 Mbit/sUsing the--share parameter, the

Test the hard disk read/write speed in linux. After buying an ssd hard disk, I want to compare it with an ordinary mechanical disk. Because the desktop is installed with the ubuntu system, I just want to use the linux Command for a simple test. The following are ssd performance data: Test write: xxx@WaitFish:~ > time

Run the dd command in CentOS to test the read/write speed of the USB flash disk. 1. Brief description of the dd command: If = input file, of = output file, ibs = number of bytes read at a time, obs = number of bytes written at a time, bs = set the number of bytes read and write at a time, skip = number of bs skipped, count = number of copies 2. Use/dev/null and/dev/zero 1. Think of/dev/null as a "black

1. DD Command Brief:if= input file, of= output file, ibs= bytes read at a time, obs= write bytes at a time, bs= set the number of bytes written at one time, skip= skipped BS number, count= copy block number2. Using/dev/null and/dev/zero　　1. Treat/dev/null as a "black hole", which is equivalent to a write-only file, and all content written to it will be lost forever2./dev/zero is a pseudo-file, but it actually produces a continuous stream of NULL3. Test