Network Speed Problem?

[flourgrader]

Hi Guys,
I am hoping you Gurus can help me out as I am lost in what to do next.
My LAN was running slow so I disconnected both of my PC from the
Switch and router and connected them directly together with a CAT6 cable.
As the NIC cards are both Gigabit I used a standard straight through NOT a crossover CAT6 cable.
I have tried setting both cards at Auto Negotiation and setting them both at 1.0 Gbps Full Duplex .
The fastest the data will write at and read is at around 300mbps
Specification of PCs
Machine1:
Asus Mother Board Premium P5k
Marvel Yukon Gigabit PCI-E Controller
Realtek PCI Gigabit Controller
Windows 7

Machine 2:
ASUS ROG MAXIMUS X HERO Motherboard
Intel ethernet connection (2) 1219-V
Windows 10
Any advice in how to improve data transfer would be welcome
Thanks guys.

 

[Nigel Spike]

The cable can transfer data much faster than your disk can write it, so the write speed is the limiting factor here. For further explanation http://www.tomsguide.com/answers/id-2656423/average-hdd-read-write-speed.html

SSDs can help, if you don't already have any.

Nigel

 

[flourgrader]

The cable can transfer data much faster than your disk can write it, so the write speed is the limiting factor here. For further explanation http://www.tomsguide.com/answers/id-2656423/average-hdd-read-write-speed.html

SSDs can help, if you don't already have any.

Nigel

 

[flourgrader]

Thanks Nigel for your quick response.
Yes I do have Samsung M.2 SSD
I will go and read your Link.
My line of thinking is
The Network cards are doing a data transfer of 300Mbps divide this by 8 gives you 37.5 MBs.
My Hard Drive can read/write at well over 100MBs (test file 50GB) continues.
So why is my date through put restricted to 300Mbps ?
Am I missing something here ?
Thanks.

 

[bill001g]

It also depends what you are copying. A single large file copies faster that 1000's of smaller ones because of all the overhead involved with the file system.

If you really think it is a issue try a old line mode tool called IPERF. It is a extremely simplistic tool used to test transfer rates between machines. It is very small so it is not affected much by cpu or memory and does not use disk so the speeds of the drives don't matter.

You normally see in the low 900mbps range with iperf.

Generally the network is not the bottleneck. It tends to be a challenge sometimes to find out what is causing slow copy times.

 

[flourgrader]

Thanks Bill for your idea.
I would have thought I can not make it any more simple than connect two network cards together with CAT6 and measure the data flow
between them. I originally thought the problem lay at the switch or the router that is why i disconnected them and removed them from the equation. I am still getting around 300Mbps.

 

[flourgrader]

Thanks Bill for your idea.
I would have thought I can not make it any more simple than connect two network cards together with CAT6 and measure the data flow
between them. I originally thought the problem lay at the switch or the router that is why i disconnected them and removed them from the equation. I am still getting around 300Mbps.

 

[failboat]

use crystaldiskmark to check the hdd r/w speeds. make sure if you have a spinning disk that it's defragged on a windows machine. a very full spinning disk may not have space to write the file sequentially. make sure to update network drivers. the frames will only go on the switch they won't hit the router. if you have a managed switch make sure you aren't running qos or anything that might slow down the switch part.