My max transfer speed is limited to only 10MB/s on GbE

[mike360x1]

Hi there,

So I'm having problems reaching transfer speeds of above ~10MB/s (both ways). I've tried transferring via SFTP (Which gives 6MB/s Read) and CIFS (Which gives 10MB/s Read).

To try and isolate the issue, I've done an iperf test as well as an iozone benchmark. Probably not the best tools for the situation but its a start. :) [Would greatly appreciate other recommendations for testing]

iperf yielded similar results @ around 10MB/s

and IOzone gave me fair results. (at around 90% miss percentage during random read) (So I can assume its not the problem of my array)

Code:

	   Run began: Wed Sep 28 23:18:25 2016

		Auto Mode
		File size set to 33554432 KB
		Record Size 4096 KB
		Command line used: iozone -a -s 32g -r 4096
		Output is in Kbytes/sec
		Time Resolution = 0.000001 seconds.
		Processor cache size set to 1024 Kbytes.
		Processor cache line size set to 32 bytes.
		File stride size set to 17 * record size.
															random  random	bkwd   record   stride
			  KB  reclen   write rewrite	read	reread	read   write	read  rewrite	 read   fwrite frewrite   fread  freread
		33554432	4096 1599129 1414199  1472084  1470345  501216 1398494  511318  1917500   508462  1448576  1389642  935656   934432

Not the best way to test but, it's all I've got. :(

SAMBA isn't this reliant on CPU performance, is it? Does one only get 10MB/s with an Intel C2550 Avoton processor?

 

[Ericloewe]

iperf yielded similar results @ around 10MB/s

Well, you clearly have a networking issue then.

Most likely a bad cable, bad switch port or crummy old switch.

 

[mike360x1]

Well, you clearly have a networking issue then.

Most likely a bad cable, bad switch port or crummy old switch.

Silly me, my mistake, I found out that it was the crummy old network female to female adapter.

I should not have trusted that shady dealer on eBay. XD

 

[Ericloewe]

network female to female adapter.

Those are major source of headaches.

 

[mike360x1]

Yeap, Lesson learned :P