Not reaching full network utilisation

snappieT

A you can see, despite having multiple copy streams, my 54Mbps 802.11g network seems unable to break through the 50% usage barrier. Any ideas on getting full network use?

snappieT

Nobody knows at all?

bminish

you are only going in 1 direction ?

po0k

54Mbps is the PHY (physical) speed.
Not actual speed.

And 802.11/a/b/g is half-duplex.
What throughput speeds are you getting?
try a straight ftp download, one file.

Could also be because you're trying to move that many files at once.
Your hard drive is the limitation (the head thrashing about to write to various blocks across the platters at the same time), not the wireless connection.

Capt'n Midnight

You have of course tweaked your QoS since otherise XP will reserve 20% of bandwidth for it.

Overhead also uses bandwidth - look at the status of your network connection , you should see about 10% going the other way in Acknowledgement packets - .
And don't forget that packet headers also take up space , source / destination address, packet no x of y , checksums , and then there is general "hello world" "here I am" "who are you" "anyone else out there" type stuff. And windows probably leaks RPC stuff all over the place.. etc.etc.etc.

snappieT

Thanks for the ideas

SyxPak: It is 802.11g and i've tried writing one file at a time with no increase. I used multiple files in my screenshot cos it does increase usage slightly. My max speed appears to be 20/21 Mbps#

Midnight: I didn't touch my QoS at all - should I?

parsi

Capt'n Midnight wrote:

You have of course tweaked your QoS since otherise XP will reserve 20% of bandwidth for it.

http://www.tweakxp.com/tweak2090.aspx says that this is a myth. Of course it is also a direct cut'n'paste from a Microsoft page so maybe it is not totally independent.