GbE running at 100Mb/s speeds???

[bob4432]

i just put in a new 8 port d-link GbE switch (all 8 ports are GbE), cabling is all good and the network connection shows up on the swtich as GbE and also my machines as GbE, the only problem is that when moving large quantities of data (test was a 8GB file) i am only getting ~10-12MB/s, so 100Mb/s speeds.

do i need to do anything to the nics to fix this? i understand that due to hdd speeds i won't be able to saturate the connection, but i figured the slowest hdd in the equation is a 5400 rpm laptop hdd, so i am assuming it can write faster than 10MB/s, especially on large file. i am not expecting full GbE, just something a bit more than 100Mb/s

nic in question are the stock one on a nf4 m/b and the other is the intel one that comes on a ibm t42 laptop, both 1000Mb/s nics....

thanks in advance for your assistance,
bob

 

[marulee]

Two endpoints should be examined. Use Ethernet cable Cat 5 or better (Cat5E, Cat6 or Cat6E). If the cable is pinned improperly, than the network connection will not run at gigabit speeds, there may be a bent or broken. I would love to find out what model you have! Good luck! 🙂

 

[spidey07]

laptop hard drive.

 

[bob4432]

Originally posted by: spidey07
laptop hard drive.

marule - the cables i created are 568A, not sure what the others as i haven't looked at their colors in the plug and the switch is d-link DGS-2208

spidey - wouldn't you think a laptop hdd could write faster than 10-12MB/s? i just want to know i am over 100Mb/s speeds but all i am doing is hovering around that mark.

 

[sieistganzfett]

a 5400rpm HD is very slow, but a 7200rpm one could get easily you around 15-30MB/s. idk about over a network though. try using a ramdrive on 2 computers that have the GbE and transfer the file via that. or do something without the overhead of windows itself, try disabling the antivirus to speed it up a more. so long as your using cat5e or higher cables, and the cables were done properly, the network should be fine since your hardware is supports it.

 

[bob4432]

Originally posted by: sieistganzfett
a 5400rpm HD is very slow, but a 7200rpm one could get easily you around 15-30MB/s. idk about over a network though. try using a ramdrive on 2 computers that have the GbE and transfer the file via that. or do something without the overhead of windows itself, try disabling the antivirus to speed it up a more. so long as your using cat5e or higher cables, and the cables were done properly, the network should be fine since your hardware is supports it.

i ran hdtach and the latptop has an avg of 30MB/s but i am sure that is reading. what i am going to do is move the huge file over to the laptop and then back to my main rig in sig, where i know i can write at faster than 10MB/s.....

 

[bob4432]

i turned on flow control on both and turned off f@h on the laptop (forgot it was running), now getting over 20MB/s to the laptop and ~25-28MB/s from the laptop 🙂

 

[JackMDS]

Originally posted by: bob4432
the cables i created are 568A

Probable reason.

 

[bob4432]

Originally posted by: JackMDS

Originally posted by: bob4432
the cables i created are 568A

Probable reason.

if you read my thread above your thread, i was able to get the laptop to move at its max hdtach numbers (25-28MB/s).

how could a 568A cable even be a remote possiblity? that is the way they are made now....if i said i just matched up the colors on the wires and didn't do it to any standard, sure i would expect there to be an issue, but not when i am using the most popular and commonly used standards for creating a cat5e cable...unles you know otherwise, and if you do please enlighten

 

[sieistganzfett]

uh, bob4432, 568A is like the phone Co. standard of choice for wiring, 568B is typically for network cables. both work though. yes, its the transmit and receive pins that matter. when you said 568A, i actually thought to myself that you worked at the phone Co, or was taught by one who did. 568B is what I make, what i learned during my days in the cisco academy making cables for practice... it is just what i see everywhere except for phone wiring though.

 

[spidey07]

I'd just like to quickly point out that performance problems 9 times out of 10 come from homemade cables. Heck 9 out of 10 ANY problems come from homemade cables.

 

[bob4432]

Originally posted by: spidey07
I'd just like to quickly point out that performance problems 9 times out of 10 come from homemade cables. Heck 9 out of 10 ANY problems come from homemade cables.

guess i am in the small percentage where it wasn't the homemade cable that was the issue 🙂

 

[bob4432]

Originally posted by: sieistganzfett
uh, bob4432, 568A is like the phone Co. standard of choice for wiring, 568B is typically for network cables. both work though. yes, its the transmit and receive pins that matter. when you said 568A, i actually thought to myself that you worked at the phone Co, or was taught by one who did. 568B is what I make, what i learned during my days in the cisco academy making cables for practice... it is just what i see everywhere except for phone wiring though.

from what i had read everybody said that they both did the same thing but if you ever wired up for a phone system then use 568A, so i just memorized that color scheme instead of both.