【 Weak current College 】 "limit of 20% to preserve bandwidth," is it true you

Increase Internet speed, to do just the opposite!

1: in the "run" and enter gpedit.msc in the open Group Policy Editor.

2: locate the "computer configuration → management template → network → QoS Packet Scheduler", select the "limit on the right to preserve bandwidth," and double-click to open.

3: select "enabled", at the bottom of the broadband restrictions to 85-100

On a few friends set up successfully, asked me what principles, here explain: I'm a friend of mine said at the trial before the Internet may retain the "limit" disable bandwidth to improve Internet speed, he found nothing, so try to play with, him, only to find can improve Web browsing speed (Note: say "Web browsing speed" instead of "network download speed") so I don't know. I checked on the Internet found an article on the "limit to preserve bandwidth" function explanation.

By modifying the group policy to increase the speed of 20% was a hoax

In the Microsoft Knowledge Base on KB316666, QoS issues are explained as follows:

With Windows2000, WindowsXP, programs can also use QoS application programming interface (API) to use QoS. All programs can share 100% of network bandwidth, the special requirements for bandwidth priority programs. Other programs can also use this kind of "retention" bandwidth, sending data to the requestor. By default, the program retains the cumulative bandwidth of up to Terminal computer each interface of basic link speeds of 20%. If the reserved bandwidth is the amount of data sent is not completely run out of bandwidth, the reserved bandwidth is unused portion can be used for other data flows on the same host. In Microsoft's clearly indicates that many KB316666 published technical articles and newsgroup articles repeatedly mentioned the WindowsXP is typically a QoS reservation 20% of available bandwidth argument is wrong.

We first of all to clarify the true meaning of QoS. QoS in Chinese meaning is: networking qualityof service. Specifically refers to the entire network connection on the application of various communication or program type priority technologies. QoS technology exists to achieve better networking quality of service. QoS is a set of service requirements that the network must meet these requirements to ensure that the appropriate service level for data transmission.

QoS implementations can make similar network TV, network music and other real-time applications the most efficient use of network bandwidth. Since it can ensure that a guarantee level sufficient network resources, so it is a shared network provides private network similar levels of service. It also provides a notification application resource tool available, allowing the application to run out of time with limited resources or modify the request. In WindowsXP systems introduces QoS technology's goal is to establish a guarantee for network communication transmission system.

From the above Microsoft QoS explanation we can understand by in the Group Policy Editor to modify the QoS of 20% to 0% to optimize network performance objectives. In group policy is modified, 20% parameter refers to when writing a program using the QoSAPI requires access to the network to be able to use the maximum bandwidth capacity, if we set to 0%, that means using QoSAPI applications written to and other applications competing for limited bandwidth, and the possible consequences of the data require priority communication has not been a priority. From this point, the QoS of 20% to 0% did not benefit also produces makes some real-time Web applications cannot effectively use network bandwidth issues. So this so-called optimization techniques can be a misleading.