Tweaking Qos

[JSKY]

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:

# Make sure you're logged in as "Administrator" (not just any account with admin privileges)

# Navigate to START -> Run and type: gpedit.msc

# Navigate to Local Computer Policy -> Administrative Templates -> Network -> QOS Packet Scheduler

# In the right window, double-click the limit reservable bandwidth setting

# On the setting tab, check the enabled setting.

# Where it says Bandwidth limit %, change it to read 0 (or whatever percentage you want to reserve for high priority QoS data)

# Click OK, close gpedit.msc

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

You need to reboot for changes to take effect.

Let's take the shortcut there.

Go to Start Menu>Control Panel>Network Connections, R-Click on "Local Area Connections" Then Properties.

Then the "Local Area Connection Properties" window opens up. It should be listed under "This connection uses the following items:"

This tweak applies only to The Professional version of Windows XP.

Edited December 31, 2004 by JSKY

[TymeKyller]

Hi Jsky,

Nice tip, but I have one problem...

I did this all okay...

# Make sure you're logged in as "Administrator" (not just any account with admin privileges)

# Navigate to START -> Run and type: gpedit.msc

# Navigate to Local Computer Policy -> Administrative Templates -> Network -> QOS Packet Scheduler

# In the right window, double-click the limit reservable bandwidth setting

# On the setting tab, check the enabled setting.

# Where it says Bandwidth limit %, change it to read 0 (or whatever percentage you want to reserve for high priority QoS data)

# Click OK, close gpedit.msc

I tried this....

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

You need to reboot for changes to take effect.

and could not find any settings that were discribed and it didn't ask for a restart... Did I do something wrong??

[JSKY]

Let's take the shortcut there.

Go to Start Menu>Control Panel>Network Connections, R-Click on "Local Area Connections" Then Properties.

Then the "Local Area Connection Properties" window opens up. It should be listed under "This connection uses the following items:"

Should have made it simple from the start.

[Darrenkook]

Followed the instructions and all went well...probably a stupid question..but how can you tell that it made a difference or not????

[CurlingSteve]

Many people won't see any difference.

From what I gather from a brief Google around unless you're really pushing your connection to the limit, say hosting a web site that streams media, QoS won't come into play.

Not many of us have time-critical applications using the connection.

Wikipedia

[TymeKyller]

Thanks I got it....