Re: Take back 20% of your bandwidth from winXP

[Reed Loden <reed () reedloden com>]

Quoting Dude VanWinkle <dudevanwinkle () gmail com>:

> http://www.realtechnews.com/posts/3113
>
> Microsoft reserves 20% of your available bandwidth for its own
> purposes (suspect for updates and interrogating your machine etc..)

Be careful what you read, as this claim is false.

See http://support.microsoft.com/default.aspx?scid=kb;EN-US;q316666 and the
section entitled "Correction of some incorrect claims about Windows XP QoS
support."

Basically:
"As in Windows 2000, programs can take advantage of QoS through the QoS APIs in
Windows XP. One hundred percent of the network bandwidth is available to be
shared by all programs unless a program specifically requests priority
bandwidth. This "reserved" bandwidth is still available to other programs
unless the requesting program is sending data. By default, programs can reserve
up to an aggregate bandwidth of 20 percent of the underlying link speed on each
interface on an end computer. If the program that reserved the bandwidth is not
sending sufficient data to use it, the unused part of the reserved bandwidth is
available for other data flows on the same host."

Don't believe everything you see on the Internet.

~reed

--
Reed Loden - <reed () reedloden com>
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