Anyone have any suggestions for programs to monitor the speed of LAN connections?

e.g. data transfer speed?

Thanks!

windows 7

task manager network stats?
performance monitor?
wireshark?

is perfmon accurate?

DU Meter

I was trying to remember what it was called Eds :D

Thanks!

linux iso + stopwatch

networktraffic gadget > du meter

Thanks everyone.

Now to figure out why my gigabit connected notebooks are transfering at ~ 13MB/s

nvidia nic chipset?

Now to figure out why my gigabit connected notebooks are transfering at ~ 13MB/s

sounds like a fair figure for a slowish disk

^ 4200rpm drives?

well I'm not referring solely to the rpm of the disk, you can work that out surely!

Been answered but I use Bandwidth Monitor.

can any of these report which computer on the network is generating traffic and when?

If you mean for interwebs you would have too have something between the net and your network to monitor all traffic, like a proxy or something to that effect.

Or if you want to look at what is taking up traffic on a PC per application there is a free monitoring tool from http://www.netlimiter.com/ for windows

This is between two Lenovo notebooks with Intel nic's

HDD's are 7200rpm, but they're not super fast...

One of our desktop guys thinks its to do with dodgy WinXP drivers, or fixed MTU's in windows xp.

:(

Migrating gigs of data at 10MB/s makes me sad in the pants.

not sure what he means by fixed mtu, maybe he meant tcp window size? but the mtu should be set to 1500 by default, and I can tell you - you can basically max out gbit between two windows xp machines while their mtu is 1500

it shouldn't be too hard to diagnose what the bottleneck is though, by benchmarking local disk speed to remove network from the equation, and using something like iperf (if there's a windows equiv) to test network speed without disk factor

where would be the fun in that when you can just come here and be a whiney c***

I've learned a bit more about the situation today :(

Can't use jumbo frames beacuse the stupid intel NICs in our donor machines don't support it when PCI-E power management is enabled (wtf) due to some bug.

So, thats out of the question.

iperf is pretty much maxing out at 95Mbit no matter what I do with the drivers.

(A bit of background, we're migrating from lenovo T60's to T400's and trying to improve the data copy speed through our USMT scripting)

PS: I'm retarded. One laptop had negotiated 100mbps.

NO WONDER I'M STUCK AT 95MBIT

thats pretty special

well, thats today... its still only hitting 500mbit in iperf. Thats not exactly SPEEDY.

AFAIK Jim, iperf isn't dependent on HDD, so it shouldn't be a limiting factor.

Can't use jumbo frames beacuse the stupid intel NICs in our donor machines don't support it when PCI-E power management is enabled (wtf) due to some bug.

as I mentioned you shouldn't really need to use jumbo frames just to get close to gbit speed copying between two xp machines - I've tested this myself lots of times, plus if you're not using a crossover cable you need to enable jumbo frames on every node between the machines as well (all switches in the path)

AFAIK Jim, iperf isn't dependent on HDD, so it shouldn't be a limiting factor.

that's why I suggested it :) I was saying to test your disk speed and network speed independently so one couldn't affect the other