What does 1m speed mean, what does 1m bandwidth mean?

Source: Internet
Author: User

What is the download speed of 1M network? How can I get more than 50 KB??
Generally 90 to 100 is normal. Up to 120
How fast does it take to uncover the real speed of ADSL puzzle
Often use ADSL users, do you know the real speed of ADSL? With this question, we take the problem step-by-step.
Very many users reflect,
ADSL download rate does not reach the nominal 512K, the brain through the ADSL access network, the download will appear a download rate indicator bar, shown above the download rate is generally kbyte/s
Around! This is actually a misunderstanding caused by the unclear conversion relationship.
What does 1,512k ADSL mean?
512k=512kbps=512k bits/s=64k bytes/s
I think this conversion should be no problem.
What does the 2,64k bytes/s mean?
The true meaning of this 64K is "the maximum download bandwidth that individual users can enjoy"
So what does this mean, I don't know if anyone has noticed the application form for ADSL installation, the above bandwidth project is written "No higher than 512K", "no higher than 8M" and so on, that is, we can have up to 64K of proprietary bandwidth under normal circumstances.
Note is "no higher", then that is to say that very often our proprietary bandwidth may be less than 64K, then why?
In fact, the ADSL of China Telecom is performed on ATM, ATM to chinanet edge router bandwidth is 155M, each edge router can connect 3000 users, assuming that these users at the same time surfing the Internet, then each user in fact only 50k bit/s bandwidth, that is, 7K BYTES/S, plus the router attenuation, then finally probably just the speed of the ordinary modem.
Of course, the above is only hypothetical situation, after all, 3000 people at the same time even on an edge router is almost impossible, telecom will not let the router full-load connection and make the speed drop so huge.
However, 64K is the highest proprietary bandwidth is beyond doubt.
3, then why is my 512K ADSL can often reach 100K or even more than 200K download speed?
We figure out that the 64K is the maximum proprietary bandwidth, but not equal to the maximum bandwidth, in fact, when the ADSL dial has been allocated actually about 8Mbps, that is 1M bytes/s download bandwidth, only the telecommunications limit our exclusive bandwidth of the highest 64K, then when the router connected to the user less time, We are able to get a portion of shared bandwidth over proprietary bandwidth (obviously telecom is not required to make these bandwidth idle), of course, 512K rate of ADSL will never be able to use the shared bandwidth to achieve 1m/s download speed, because after all, there are still very many people at the same time the Internet, Also the telecommunications affirm another mechanism of the load balancing.
4,ADSL upload speed impact on downloads
TCP/IP provisions, each packet, need to have acknowledge message return, that is, the transmission of information, need to have a message to receive information back, ability to determine the transmission speed behind, and decide whether to transmit the lost data again.
A portion of the upstream bandwidth is used to transmit these acknowledge (confirmation) data, when the upstream load is too large, it will affect the transmission speed of acknowledge data, and thus affect the download speed. This is especially true for asymmetric digital loops, which are the same upstream bandwidth as ADSL, which is much smaller than the download bandwidth. Experiments have shown that when uploading a full load, the download speed becomes 40% of the ideal speed, which explains why a lot of friends with BT download a little speed limit but can get a greater download speed.
Since then we can not ask all the people are not limited to speed, because for ADSL users this is very unrealistic, is not scientific. The appropriate speed limit is correct.
The speed of the 5,ADSL gradually decreases with the extension of the connection time.
Previously said ADSL re-dial will establish the highest theoretical 8Mbps download bandwidth, this bandwidth will never change! Just actually because the ADSL noise detection mechanism assumes that the line is not good then the connection is obviously impossible to reach the theoretical value, the last is 5Mbps, the bandwidth will not change.
Then why do you say ADSL speed will be more and more slow? This is because even if the user does not power off the modem, sometimes the ADSL link is interrupted at any time. For example, in situations where communication status worsens due to noise addition, frequent errors occur. Once the link has been interrupted, it will be debugged again immediately, and once again the link is determined. Just assuming that the noise of the link interruption is still there, the speed of the link (which is usually larger) is lower than the original. Because the link speed determined in debugging is also fixed, the link speed will not increase even after the noise disappears. The longer the ADSL modem is used, the higher the likelihood of this happening, so the connection speed is getting slower. At this point, if the user starts the modem again, the link will be established again, and the speed may be improved. This common sense can be used as a response to the reduction of link speed. Of course, these conditions are only based on the ADSL connection itself to discuss, the actual situation also includes the Internet condition, the site itself response and so on. Understanding the above knowledge, you may be enlightened. The original 512K is not 512KB ah, just 64KB, whining ~ ~ ~ You can not reach the 512KB per second download speed. The real realization of ADSL fast solution ADSL speed is the most important point is that the user host to achieve a certain configuration, talent on the hardware to ensure the speed of ADSL access. As the saying goes, "no diamond, no porcelain live", assuming the high performance of personal computers, can be high-speed implementation of Web browser and mail software, improve Internet speed. Assuming 1Mbps ADSL is installed, but the PC can only be loaded with WINDOWS95 or 98, of course, it will be considered slow. In particular, the memory hypothesis is only 64MB or 128MB, broadband is like a hero useless martial place. Assuming that the PC is updated and the operating system is able to use WindowsXP, the speed of natural broadband access will increase. In addition, windowsxp than the original Windows system requires a lot of other memory, it is recommended to have at least 256MB of memory. If you don't have the ability to update your PC, add memory, and you can feel the speed increase simply by adding memory. In addition, broadband access to use the ADSL modem also to support the fast speed, the ability to guarantee access speed.
Other hardware on the ADSL maintenance methods, such as minimizing telephone sockets and ADSL modems between the telephone line, to minimize line loss, detailed operation can shorten the distance between the telephone socket and the ADSL modem, long connection between the modem and the PC network cable, will not reduce the speed. In the vicinity of the ADSL modem do not place electromagnetic waves of office equipment (including personal computers) or television, refrigerators and other appliances, mobile phones will bring interference to the modem. People familiar with the computer should know that the performance of personal computers not only depends on their own hardware foundation, the later computer software optimization is the same can become the power of the network to fly. one hand
, the performance of the system can be improved by some of today's "flooding" system optimization software, CPU vacancy rate, memory usage, hard disk fragment cleanup and so on, can be improved through the power of software. On the other hand, when broadband access is connected to the network, the same can be optimized with some special software, some network connection settings are randomly adjusted to achieve the best connection effect.
How fast does 1m speed mean? It's almost the same as 512.
Noun Explanation:
Bit bits
BYTE byte

Please note that I am here with the B-letter uppercase and lowercase
1M Bandwidth is
Translate a bit

1M bits per second =1m bit/s
The speed at which the operating system is downloaded in the computer is
Calculate by kb/s or MB/s
is k BYTES per second= k bytes/s Kbps or kb/s
or M BYTES per second= m bytes/s Mbps or MB/s

The download speed limit for 1M bandwidth is
Is the download time limit speed is 128k/s
Consider some other factor about 100 k/s is the quickest.

What does 1m speed mean, what does 1m bandwidth mean?

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