How To Increase bandwidth by tweaking QoS in Windows XP Pro

The following tweak applies only to Windows XP Professional edition.

The default system behavior is that all 100 % bandwidth is available, however, if there is a running application that indicates to the OS it needs to send high priority / real time data, then as long as it has the socket open, Windows XP will restrict “best effort” traffic to 80 % of the bandwidth so that high priority traffic can be accommodated. Basically, applications can make this request to the operating system for QoS support using the QoS application programming interfaces ( APIs ) in Windows and this only applies if a specific app is requesting QoS.

If you'd like to change how much bandwidth is reserved for QoS ( the default is 20 % of the total bandwidth ), do the following:

1. Dash off sure you're logged in now " Administrator " ( not honorable any account go underground admin privileges ).
2. Navigate to START>Run and type: gpedit. msc
3. Navigate to Local Computer Policy > Administrative Templates > Network > QOS Packet Scheduler
4. In the right window, double - comprehension the limit reservable bandwidth setting
5. On the setting tab, check the enabled setting.
6. Where it says " Bandwidth limit % ", change it to read 0 ( or whatever percentage you want to reserve since high priority QoS data )
7. Click OK, close gpedit. msc

Under START > My Computer > My Network Pressure > View Network Connections, right - click on your connection and below Properties ( where it lists your protocols ), make sure QOS Packet Scheduler is enabled.

The tweak desribed below helps boost priority for DNS & hostname resolution effect prevalent. What this means is, it helps web pages load faster, and has negligible effect on downloads ( not counting the couple of ms gain with the host resolution at clip - time ).

Applying this tweak assumes some proficiency in editing the Windows Registry using Regedit ( Start > Run > type: regedit ). Through always, backup your Registry before making any changes so you can revert to the previous state if you don't like the results.

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