How to increase network utilisation

[nadeem]

Hi, I've got 3 computers hooked up to my belkin router (laptop and one
computer via wi-fi and the other computer with ethernet). It says on
the box of my router that it has speeds of 54 Mb per second. Although
when i try to transfer a file from my computer to the laptop (both by
wi-fi) it takes far longer to transfer then it should. The computer and
laptop are in close range of the router and are connected at 54Mb per
second. If i look in the task manager, it says i'm only utilizing about
8% of the network. Does anyone know how to increase network utilization?

 

[Jim]

Hi, I've got 3 computers hooked up to my belkin router (laptop and one
computer via wi-fi and the other computer with ethernet). It says on
the box of my router that it has speeds of 54 Mb per second. Although
when i try to transfer a file from my computer to the laptop (both by
wi-fi) it takes far longer to transfer then it should. The computer and
laptop are in close range of the router and are connected at 54Mb per
second. If i look in the task manager, it says i'm only utilizing about
8% of the network. Does anyone know how to increase network utilization?

For starters, it isn't 54MB/sec, it is 54MHZ. Secondly, that is not a
steady state value. Lots of messages, in addition to your data flow,
transmit through that very same pipe.

Even so, 8% utilization does seem a bit slow. About all one can do is to
insure that the buffer sizes are large enough. You will need to dig very
deep into the network internals to learn about this issue.

Jim

 

[Steve Winograd [MVP]]

Hi, I've got 3 computers hooked up to my belkin router (laptop and one
computer via wi-fi and the other computer with ethernet). It says on
the box of my router that it has speeds of 54 Mb per second. Although
when i try to transfer a file from my computer to the laptop (both by
wi-fi) it takes far longer to transfer then it should. The computer and
laptop are in close range of the router and are connected at 54Mb per
second. If i look in the task manager, it says i'm only utilizing about
8% of the network. Does anyone know how to increase network utilization?

For starters, it isn't 54MB/sec, it is 54MHZ. Secondly, that is not a
steady state value. Lots of messages, in addition to your data flow,
transmit through that very same pipe. [snip]

"nadeem" is right, Jim. The rated speed of an 802.11g wireless
connection is 54 megabits per second. See:

http://whatis.techtarget.com/definition/0,,sid9_gci783003,00.html

However, like all rated speeds for networking equipment, it's a
theoretical maximum speed under ideal laboratory conditions. Real
networking equipment never gets anywhere close to its rated speed for
actual data transfers. As you say, it's not a steady state value, and
it doesn't account for non-data bits in the data flow.

In my tests, the actual speed of a file copy using 802.11g wireless is
generally between 10-20 megabits/second (1.25-2.50 megabytes/second)
At that speed, it takes between one and two minutes to transmit a 150
megabyte file.
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com

 

[Jack \(MVP-Networking\).]

Hi
Optimize your computers TCP/IP Stack according to the type of your Internet
connection, ii would provide better Internet and in most cases would improve
Network traffic.
http://www.ezlan.net/Internet_Speed.html
Jack (MVP-Networking).

 

[Jim]

"nadeem" is right, Jim. The rated speed of an 802.11g wireless
connection is 54 megabits per second. See:

http://whatis.techtarget.com/definition/0,,sid9_gci783003,00.html

Ok, so I learn something new every day...

However, like all rated speeds for networking equipment, it's a
theoretical maximum speed under ideal laboratory conditions. Real
networking equipment never gets anywhere close to its rated speed for
actual data transfers. As you say, it's not a steady state value, and
it doesn't account for non-data bits in the data flow.

In my tests, the actual speed of a file copy using 802.11g wireless is
generally between 10-20 megabits/second (1.25-2.50 megabytes/second)
At that speed, it takes between one and two minutes to transmit a 150
megabyte file.

Is the wireless protocol like Ethernet? It is very hard on an Ethernet line
to get more than 60% throughput because of packet collisions. Once upon a
time, I updated an Ethernet packet sniffer program to get it to work as well
as possible on Alpha VMS. Every now and then I saw 60% or more, but I never
really believed the calculations. One of the many problems is that a host
computer cannot see its own packets unless they are broadcast packets.
Jim

 

[Steve Winograd [MVP]]

Ok, so I learn something new every day...


Is the wireless protocol like Ethernet? It is very hard on an Ethernet line
to get more than 60% throughput because of packet collisions. Once upon a
time, I updated an Ethernet packet sniffer program to get it to work as well
as possible on Alpha VMS. Every now and then I saw 60% or more, but I never
really believed the calculations. One of the many problems is that a host
computer cannot see its own packets unless they are broadcast packets.
Jim

I don't know the details of the wireless protocol (or the wired
protocol, for that matter). On a Fast Ethernet (100 megabit rated)
connection, I've seen file copy speeds of up to 70 megabits/second.
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com

 

[Jim]

I don't know the details of the wireless protocol (or the wired
protocol, for that matter). On a Fast Ethernet (100 megabit rated)
connection, I've seen file copy speeds of up to 70 megabits/second.

The wired one is supposed to be Ethernet, but most likely is the 10
megabit/second version. If they were using Fast Ethernet, the whole world
would know..
Jim

 

[V Green]

See below-

I don't know the details of the wireless protocol (or the wired
protocol, for that matter). On a Fast Ethernet (100 megabit rated)
connection, I've seen file copy speeds of up to 70 megabits/second.

Wireless has much more overhead than 10/100 wired due to
the less reliable transmission medium (RF vs. copper).

Manufacturers have done a great job marketing wireless products
based on the design throughput of the silicon inside, which NEVER
comes even close to actual throughput. In other words, they lie,
just like most marketing types, in order to sell stuff.