Some rooms will limit the flow of the machine, in order to not touch the bottom line, in the use of SCP and rsync should pay attention to.In order to avoid the disconnection caused by your SCP or the Lazy OPS Setup firewall, we have to limit the flow of our data, and it's better to be slower than pinched. Therefore (limited to 1M bytes/s):
Scp-l 10000 A large file your account @ remote machine or rsync is
1、scp限速scp -l 800 a.txt [emailprotected]:/home/admin/downloads此时的传输速率就是800/8=100KB左右Man-a SCP View the meaning of the parameter. Note that the unit is bit2, rsync is used to synchronize updates, can also be used to upload files, but it is not recommended to useMan-a rsync view parameter Help information使用rsync实现限速100KB/srsync -auvzP --bwlimit=100 本地文件 远程文件参数说明:v:
] [user]@[ip]:[path]echo '----------------------------------------------------'echo "complete rsync [path] to [user]@[ip]:[path]"
Parameter Parsing:
-Z, -- compress compresses backup files during transmission
-R, -- recursive processes subdirectories in recursive Mode
-T, -- times preserve the file time information
-P, -- perms to keep File Permissions
-O, -- owner keeps file owner information
-G, -- group: Keep file group information
-L, -- links re
Label: rsync Speed LimitRsync is (Limit: 100 K Bytes/s ):# Rsync-auvzp -- bwlimit = 100 remote file parameter descriptions for local files:V: Detailed promptA: perform operations in archive mode. Copy directories and symbolic connections, which are equivalent to-rlptgod. Z: CompressionU: update only to prevent new local files from being overwritten. Note that the
One, SCP speed limit 1M#scp-l 1000 file name account @ remote machine IPAt this point the transfer rate is 1m/8=100k aroundSecond, Rsync is (limited to 100k bytes/s):#rsync-auvzp--bwlimit=100 Local Files Remote filesParameter description:V: Detailed TipsA: Operation in archive mode, copy directory, symbolic connection, equivalent to-rlptgod.Z: CompressionU: Updat
Some people do not know how to test their network speed, or do not pay close attention to their network speed at ordinary times, which may be deceived by network providers. In order to protect their own interests from infringement, you should know how to test the network speed
How can I test the disk write speed ?, Test disk speedHow can I test the disk write speed?
1. Problem Source: an emergency connection problem occurs in a business trip project: test the disk write
Give your cool dog software users A detailed explanation of how to share the cool dog test Radio speed tutorial.
Tutorial Sharing:
1) Click the speed button below the surface.
2 Right click on the radio, and then click on the Right menu "Test Radio Speed" butto
Here requirements in the Thunderbolt 7 or higher to support the speed test function Oh, otherwise please upgrade your Thunder tools.
1, we open the Thunder after clicking on the main page above the
2, and then we'll see a tab with the typeface of a gadget to click on it as shown
4, then we find the middle of the option, write the Speed
The use of wireless routers, computers or notebooks, mobile phones and other speed can not achieve the speed of telecommunications broadband. For example, your broadband from the telecommunications application for 12M, the use of routers after the test speed value of only 4 m, then need to do the following troubleshoot
I. Use the hdparm commandThis is a command used to obtain the parameters of the ATA/IDE hard disk, hdparm has been written by Mark Lord, the primary developer and maintainer of the (E) IDE driver for Linux, with suggestions from javasnetfolk ). this command should also be used only for Linux systems. For UNIX systems, ATA/IDE Hard Disks may be used less often. Generally, large systems use disk arrays.Easy to use# Hdparm-Tt/dev/sda
/Dev/sda:Timing cached reads: 6676 MB in 2.00 seconds = 3340.18 M
Linux dd command to test the read/write speed of the USB flash drive and the dd read/write speed
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.
Program | script | speed | As mentioned earlier, we can only optimize if we find code that affects speed. The Benchmark_timer class and Benchmark_iterate class in Pear's benchmark package can be used to easily test the speed of script execution. (For the installation and configuration of pear, please check the relevant
Lan network performance test method HDtune 64K has a cache speed test method, let you know your network performance, hdtune64k
This method can effectively test the network transmission performance. This method is applicable to disks, diskless (System Virtual Disk), game Virtual Disks, and other virtual disk software wi
Test a speed test script. I don't know where the error is.
/* = Create a data file that will be transmitted to the user = */$ fp = fopen ("cs.txt", "w"); for ($ I = 0; $ I "; Echo"
"; $ Stop = microtime_float (); $ duration = ($ stop-$ start); echo $ duration." s"; $ Speed = round ($ fsize/$ duration, 2); echo" Your n
brakes to control the speed, when the front of the left side of the big "4" alignment road is central when parking . handle brake → pick up → turn right turn light → stall → loose clutch → loose brake → loose seat belt. Note: The principle is not to obstruct the traffic section parking. Junction within 20-30 meters , red light junction 50 meters , Bus station, Crosswalk Line, school area, fire tunnel, gas station, etc. no parking .④ report: The exam
◆ Script Execution speed test
As mentioned above, we can only optimize the code that affects the speed. The benchmark_timer class and benchmark_iterate class in the benchmark package of pear can be used to conveniently test the speed of script execution. (For installation an
Speed is generally divided into download speeds and upload speed, generally we calculate the speed is only test download speeds, as long as the computer downloads from the Internet faster, users are usually more satisfied. But you know what? Upload speed is also noteworthy,
Speed is generally divided into download speeds and upload speed, generally we calculate the speed is only test download speeds, as long as the computer downloads from the Internet faster, users are usually more satisfied. But you know what? Upload speed is also noteworthy,
Before long, Sogou high speed browser Chrome12 kernel version of the test, a variety of excellent data display, so that we still remember, not only in the speed of Ascension again, in the function also brings many surprises to the user. Today, the Sogou high-speed browser's kernel is upgraded again, the version directl
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