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Slow network

Go to solution Solved by seanondemand,

This all correct, that's in the range of expected results. Theoretical speeds are just that - theoretical. There's too many things in the middle to ever hit that number, but I'd say that's a reasonable place to be.

Hi!
I would like to ask, why am I seeing ~70MB/s transfer speed (between nvme ssds) on my (supposably) gigabit network.
(Everything is gigabit, cable is cat 5e in the wall). However copying speed seems low and only amber led is flashing on the ethernet port.

For testing I use my laptop (aspire a717-71G) and pc (Gigabyte z170 hd3p) and a cat 6 patch cable (1 metre). Updated the drivers and still nothing.

What is wrong?
Thanks for answers

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CPU is probably maxing out on the laptop, it also depends on the type and size of the individual files. You could have a 100Gbit network but if you're transferring a ton of small files you could still see really low speeds for single host to host transfers.

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So 70 MB per sec is actually pretty common and not a bad result. It comes down to CPU power, link between CPU and south bridge and then south bridge to your ethernet controller. You should see better performance on a dedicated NIC card but for onboard LAN cards this is pretty much the limit you will see. What you can do is configure your cards to both accept jumbo sizes but make sure they are both the same so like 9k for example. Another factor is the quality of your switch or router. 

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40 minutes ago, Lurick said:

CPU is probably maxing out on the laptop, it also depends on the type and size of the individual files. You could have a 100Gbit network but if you're transferring a ton of small files you could still see really low speeds for single host to host transfers.

It has i7 7700HQ, so I wouldn't think, that that is the bottleneck.

So an avarage 70 MBPS is good? (Remember these are between nvme ssds, no HDDs)

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As above, what kind of data are you forklifting between computers?  Even on nvme you'll see reduced transfer rates if you're moving a bundle of small files.

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1 hour ago, drRodneyMcKay said:

It has i7 7700HQ, so I wouldn't think, that that is the bottleneck.

So an avarage 70 MBPS is good? (Remember these are between nvme ssds, no HDDs)

Over a 1Gbit network the most you can expect is ~115MB/s. 70MB/s isn't terrible and the speed can be very dependent on the type of files being transferred.

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9 hours ago, drRodneyMcKay said:

Hi!
I would like to ask, why am I seeing ~70MB/s transfer speed (between nvme ssds) on my (supposably) gigabit network.
(Everything is gigabit, cable is cat 5e in the wall). However copying speed seems low and only amber led is flashing on the ethernet port.

For testing I use my laptop (aspire a717-71G) and pc (Gigabyte z170 hd3p) and a cat 6 patch cable (1 metre). Updated the drivers and still nothing.

What is wrong?
Thanks for answers

Thank you for all answers. 

The problem is solved: moved a large file between the two and it was around 100 MBpS.

So I have to adjust my exception about the speeds. 

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If you have WSL or some Linux knowledge you can tar up a folder and then transfer with one command.

Quote

tar zcvf - MyBackups | ssh user@server "cat > /path/to/backup/foo.tgz"

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