speed test blue stream

cache is read in 2 seconds, which is about MB/sec;3.11 MB disk read (physical read) in 70.11 seconds, the read speed is about MB/sec (2) Use the dd commandThis is not a professional test tool. However, if the test results are not demanding, you can use it to evaluate the disk read/write speed.In addition, this is a free software, which is basically installed on

The first thing to understand is two special devices: /dev/null: Recycle Bin, bottomless pit/dev/zero: Generating charactersØ Test Disk Write ability Time DD If=/dev/zero of=/test.dbf bs=8k count=300000 Because/dev//zero is a pseudo device that produces only a stream of empty characters and does not produce IO for it, IO is concentrated in the of file, and the of file is used only for writing, so this co

)% 10;ElseReturn (A * 2 + 5)% 10;}Calculate roundingint Jin_wei (char* p){char* level[] = {"142857","285714","428571","571428","714285","857142"};Char buf[7];BUF[6] = ' + ';strncpy (buf,p,6);int i;for (i=5; i>=0; i--) {int r = strcmp (Level[i], buf);if (rwhile (r==0) {p + = 6;strncpy (buf,p,6);R = strcmp (Level[i], buf);if (r　　　　　　if (r>0) return i; Blanks}}return 0;}Multiply multiple digits by 7void F (char* s){int head = Jin_wei (s);if (Head > 0) printf ("%d", head);char* p = s;while (*p) {int

(physical read) in 70.11 seconds, the read speed is about MB/sec (2) Use the DD command This is not a professional test tool. However, if the test results are not demanding, you can use it to evaluate the disk read/write speed. In addition, this is a free software, which is basically installed on X nix systems. dd too

The fastest speed is that non-WCF named pipelines on the local machine have 113 MB/S The fastest speed for local network machines to transfer files is to use TCP binding of WCF, with a speed of 70 ~ 120 MB/S Test speed comparison: Local Data Transfer

the replication of Oracle bare devices, DD tools are generally preferred.Get to know two special devices before use/dev/null pseudo-device, Recycle Bin. Writing the file does not generate IO/dev/zero pseudo-device generates an empty character stream, which does not produce IOTest method:A. Test disk IO write speed# time DD If=/dev/zero of=/test.dbf bs=8k count=3

speed.In addition, because this is a free software, basically Xnix system is installed, for the replication of Oracle bare devices, DD tools are generally preferred.Get to know two special devices before use/dev/null pseudo-device, Recycle Bin. Writing the file does not generate IO/dev/zero pseudo-device generates an empty character stream, which does not produce IOTest method:A. Test disk IO write

/sec;Read 218MB disk (physical read) in 3.11 seconds, read speed approx. 70.11 mb/sec(2) using the DD commandThis is not a professional testing tool, but if the test results are not very demanding, you can usually use to make a simple evaluation of the disk read and write speed.In addition, because this is a free software, basically Xnix system is installed, for the replication of Oracle bare devices, DD to

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.

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.

Reference1:http://server.chinabyte.com/495/12361995.shtmlreference2:https://www.deleak.com/blog/2011/11/05/big-penis-lol/Learn two special devices first/dev/null pseudo-device, Recycle Bin. Writing the file does not generate IO/dev/zero pseudo-device generates an empty character stream, which does not produce IOTest method:A. Test disk IO write speedTime DD If=/dev/zero of=test.dbf bs=8k count=300000B.

Write speed:TIME dd If =/dev/Zero of = test. dbf bs = 8 k count = 300000Among them,/dev/zero is a pseudo device, which only generates a null compaction stream and does not generate Io for it. Therefore, Io will be concentrated in the of file, and the of file is only used for writing, therefore, this command is equivalent to testing the disk write capability.The output result is similar (because the

Speed//////////////////////////////////////////////////// {The client template for testing} //////////////////////////////////////////////////// //////////////////////////////////////////////////// {The code for each script you tested} //////////////////////////////////////////////////// //-------------------------------------------------- Test-js.asp Use an array to collect all the character channeling

1, first familiar with two special equipment:(1)/dev/null: Recycle Bin, bottomless pit.(2)/dev/zero: produces characters.2. Test disk write capabilityCopy the Code code as follows:Time DD If=/dev/zero of=/testw.dbf bs=4k count=100000Because/dev//zero is a pseudo-device, it produces only a stream of empty characters, it does not produce Io, so the IO is concentrated in the of file, the of file is used only f