having 10Gbe issues

RasmusDC · September 26, 2019

remember that my old setup ran perfectly.. but i am having issues.

Running a XG16 switch.

Running 2 pc´s a 4790k and a 8700k so horsepower should be enough

the server has a Asus XG-C100F and the main pc the C(copper) version, i know these are not the PRIME cards, but i do know they should work better.

it has been setup in my office, until it is ready for server room installation, a 3 meter DAC cable SFP+ approve for UNIFI 10gbtek, tried a 0.5 meter also... and a CAT6A cable, tried a CAT6 and a CAT 5e get the same results in all.

Iperf3 gets me, 1.8-2Gbit transfer, in a NVME to NVME transfer i peak out at 2.5Gbit, but still far from .. perfect, tried jumbo frames, recieve packets transmit packets, nothing seems to work.. still ... this really poor result

UrbanFreestyle · September 26, 2019

what are the drive models and speeds?

Could it be reaching a limit on speed of storage?

RasmusDC · September 26, 2019

iperf use memory not drive speeds...

but the file transfers is between a MP510 M.2 drive and a SN750 M.2 drive both performe above 3GB/sec... but it is the Iperf that really gets me

RasmusDC · September 26, 2019

file transfers however is faster, just dragging files that what iperf gives me.. so that does not help me locate issues, still not 10Gbit

but fairly stable.

Edited September 26, 2019 by RasmusDC

RasmusDC · September 26, 2019

the fun part is, that it is PERFECTLY capped at 2.5 GBit. look at that hardlock

RasmusDC · September 26, 2019

sorry guys.. i was the ASSHAT here..

i sat in my tears.. (not really) getting a cold pepsi max... and the 2.5Gbit riddled me.. then i looked into bus speeds, and the gigabit card was running X1 on the server.. into the X16 port with it.. and now i have.. 7.2Gbit, and that is actually fine, since it was not the NVME but an SSD + an Ironwolf, så 550MB/Sec plus a 250MB/Sec drive... so it seems to work.

guess i NEED a Threadripper now, because of lack of PCI-E Lanes.. getting older at 41 i get a bit angry at my self for not getting the solution right away.

1920x hmm.. yes it is old, but cheap, or wait for the gen 3.... i know what my wife would say ... "STOP USING ALL OUR MONEY" ... guess that means gen 3...