Forum Thread

PC to PC file transfer via Crossover Cable (Fastest way?)

gigantic 40 21 November 12, 2012 at 08:20 AM
So I connected my PC to PC via a CAT6 Crossover cable. I set both adapters to 100 Full Duplex. When transfering files I am only getting 1MB/sec. Anyone know what i'm doing wrong?

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#2
What type of files are you transferring? Lot's of small files take longer than fewer number of larger files. Also AV could be slowing things down as it does a scan.

Your best bet is probably still to use a gigabit switch. Crossover cables use to be great when networking gear like routers and switches were expensive but thats just not the case anymore.
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#3
the NIC in newer computers can auto-negotiate, thus making crossover cables obsolete..

try running task manager and going to the network tab - look at the "link speed" of the network adapter on both computers to verify that it is indeed megabit

if it is indeed so, then chances are that you are being limited by the disk - you can check by creating a ramdisk on both computers (a virtual hard drive that exists in the computers ram) and copying files to/from that, if you get ~12mb/s then you know that the network is fine and that the disk is limiting you

+1 on the small files taking longer to transfer, you can try to create an archive and then just copy over the archive, and uncompress on the receiving computer
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Last edited by slapshot136 November 12, 2012 at 08:42 AM
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#4
What operating system(s)? XP had an issue where if it ran into a perceived issue with a hard drive, it would bump it down from DMA 5 down to 4, and so on, until it was in PIO mode. I had that problem with one of my PCs, once I resolved it, I was back up to 10-12 versus the 1 meg I had been seeing.
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#5
Quote from gigantic View Post :
So I connected my PC to PC via a CAT6 Crossover cable. I set both adapters to 100 Full Duplex. When transfering files I am only getting 1MB/sec. Anyone know what i'm doing wrong?
Set both adapters to Auto. Do as recommended and check Task Manager to see what they auto-negotiate. And if you have two slower PCs, then part of data transfer is the reading and the writing, so if the HDD you're transferring to is just slowly chugging along it can affect your transfer rates. Free up any available resources, turn off any unnecessary applications, and look to see if there is any improvement.
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#6
Quote from menace33 View Post :
Set both adapters to Auto. Do as recommended and check Task Manager to see what they auto-negotiate. And if you have two slower PCs, then part of data transfer is the reading and the writing, so if the HDD you're transferring to is just slowly chugging along it can affect your transfer rates. Free up any available resources, turn off any unnecessary applications, and look to see if there is any improvement.
Set them to auto-negotiate and that fixed it 11.3MB/sec. Hmm... it didn't work yesterday when i first connected it, that's why i switched it. Anyway, thanks!!
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