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idata
Community Manager
2,549 Views

X520-DA1 or X520-LR1 with Intel SFP+ extremely slow speed ...

I have two DELL PCs each installed Intel X520-DA1 with SFP+ (FTLX1471D3BCV-IT) and using single mode fiber to connect two PCs directly, on Windows 7 ultimate 64bit the adapter linked as 10Gbps, but when I using iperf to test the transmission speed, it only ran about 2.5Gbps, I change two adapters to X520-LR1 and still the same?!

No matter what I change (configurations, SFP+), the speed still extremely slow,I wonder what could be wrong?!

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20 Replies
idata
Community Manager
376 Views

HI wowhsieh,

 

 

Thank you for the post. Will you be getting the same result if attaching the NICs to a switch?

 

 

rgds,

 

wb

 

idata
Community Manager
376 Views

Yes, two PCs connected to 10G switch and still the same, the speed always less than 1.5Gbps.

idata
Community Manager
376 Views

Hi wowhsieh,

 

 

Thank you for the clarification. What is the driver version used for both X520-DA1 and X520-LR1?

 

Please try installing the latest version in case you are not using the latest version.

 

https://downloadcenter.intel.com/download/18713/Intel-Network-Adapter-Driver-for-Windows-7-?product=...

 

 

Based on the test result. just to clarify whether the X520-DA1 or X520-LR1 connects with OR without using switch in between, the performance will always be slow in iperf ?

 

 

Please feel free to update me. Thank you.

 

 

rgds,

 

wb

 

idata
Community Manager
376 Views

I download drivers one week ago, but just in case, I download the hyperlink's driver and install again and reboot PCs, still the same?! no matter two PCs linked directly or a 10G switch between two PCs.

idata
Community Manager
376 Views

The speed always locate at about 1.35Mbps.

idata
Community Manager
376 Views

Hi Wowhsieh,

 

 

Thank you for the clarification. I will further investigate on this then update you.

 

 

rgds,

 

wb

 

idata
Community Manager
376 Views

Hi Wowhiseh,

 

 

Please help by sharing your iperf testing paramters and the SSU logs.

 

You can download the Intel SSU at https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility, run the utitlity to generate the log then send to me.

 

 

thanks,

 

wb
idata
Community Manager
376 Views

iperf 3 parameters:

[Server]

iperf -s

[Client]

iperf -c 192.168.10.1

P.S. had tried different iperf options.

idata
Community Manager
376 Views

Hi Wowhsieh,

 

 

Thank you for the information. I will further check on this.

 

rgds,

 

wb

 

idata
Community Manager
376 Views

I changed two PC's OS to Ubuntu Desktop 16.04 using default driver and get 10G link state(two PC connect directly), but the iperf speed still only 1.3Gbps?!

idata
Community Manager
376 Views

Hi Wowhsieh,

 

 

Thank you for the updates.

 

 

rgds,

 

wb

 

idata
Community Manager
376 Views

Hi Wowhsieh,

 

 

Good day. Please try the following:

 

 

1) Disable TCP offloading option in the advance property of the adapter

 

Go to device manager->Network adapter-> right click on the NIC->property->Advance->

 

Disable the TCP offload option

 

2) Check if there is "Above 4GB" option in the system BIOS, enable it if there is

 

3) Try on another PCI-e x8 slot within the same system

 

4) Check with Dell* support for similar issue or workaround , as we found your network adapter

 

bearing the partnumber of E66562-003 which is not an Intel retail part

 

http://www.intel.com/content/www/us/en/support/network-and-i-o/ethernet-products/000005612.html

 

 

5) You can also run the following iperf command

 

Host Tx> iperf –c xxx.xxx.xxx.xxx(ip of receiver) –i 5 –w 64K –l 64K –P 8 –t 20

 

Host Rx> iperf -s

 

 

–i 5 ; report display period in unit sec

 

–w 64K ; TCP window size at unit=kB, by default 8kB.

 

–l 64K ; traffic payload buffer at unit=kB.

 

–P 8 ; port# for payload transmitting and receiving.

 

–t 20 ; Testing duration y default 10 sec.

 

 

Hope the above information help.

 

 

rdgs,

 

wb
idata
Community Manager
376 Views

Hi Wowhsieh,

 

 

Any update from the test result? Please feel free to update me. Thank you.

 

 

rgds,

 

wb

 

idata
Community Manager
376 Views

Last few weeks we were busy in handling other problem, we will back to this case next week and reply soon, thank you!

idata
Community Manager
376 Views

Hi Wowhsieh,

 

 

Thank you. We will wait for your update.

 

 

rgds,

 

wb

 

idata
Community Manager
376 Views

Hi Wowhsieh,

 

 

Good day. Have you tried testing the suggestion given? Please feel free to update me.

 

 

Thanks,

 

wb

 

idata
Community Manager
376 Views

Hi,

Sorry, still have no time to test, maybe couple days later, thanks!!

idata
Community Manager
376 Views

Hi Wowhsieh,

 

 

Thank you and this is noted. Hope to hear good news from you.

 

 

rgds,

 

wb

 

TGrif2
Beginner
376 Views

I would like to comment on this post as well. Slightly different setup but same slow results.

Two dell R720s

Two intel branded X520

Windows 2012 R2 Datacenter on both servers

per dell support:

X520 driver: 3.9.58.9101 Network_Driver_FDP8R_WN64_17.5.0_A00

and firware: Network_Firmware_V6TPJ_WN64_17.5.10_A00

I do have the 4g option set in the bios

using branded intel sfps

using avago sfps on cisco side

One Cisco Nexus 9372PXE both servers on same vlan with duplex full and speed 10000 also tried auto negotiate

iperf config:

iperf3 -s

iperf3 -c xx.xx.xx.xx –i 5 –w 64K –l 64K –P 8 –t 20

[ ID] Interval Transfer Bandwidth

[ 4] 0.00-1.00 sec 20.5 MBytes 172 Mbits/sec

[ 4] 1.00-2.01 sec 23.1 MBytes 193 Mbits/sec

[ 4] 2.01-3.00 sec 25.9 MBytes 217 Mbits/sec

[ 4] 3.00-4.00 sec 26.0 MBytes 218 Mbits/sec

[ 4] 4.00-5.00 sec 25.8 MBytes 216 Mbits/sec

[ 4] 5.00-6.01 sec 25.2 MBytes 211 Mbits/sec

[ 4] 6.01-7.00 sec 22.5 MBytes 189 Mbits/sec

[ 4] 7.00-8.00 sec 25.0 MBytes 210 Mbits/sec

[ 4] 8.00-9.00 sec 22.1 MBytes 186 Mbits/sec

[ 4] 9.00-10.00 sec 21.9 MBytes 183 Mbits/sec

- - - - - - - - - - - - - - - - - - - - - - - - -

[ ID] Interval Transfer Bandwidth

[ 4] 0.00-10.00 sec 238 MBytes 200 Mbits/sec sender

[ 4] 0.00-10.00 sec 238 MBytes 199 Mbits/sec receiver

iperf3 -c 10.5.63.40 -P 20 -t 30 -f m -b 0

[ ID] Interval Transfer Bandwidth

[ 4] 0.00-30.01 sec 48.8 MBytes 13.6 Mbits/sec sender

[ 4] 0.00-30.01 sec 48.5 MBytes 13.6 Mbits/sec receiver

[ 6] 0.00-30.01 sec 40.1 MBytes 11.2 Mbits/sec sender

[ 6] 0.00-30.01 sec 40.0 MBytes 11.2 Mbits/sec receiver

[ 8] 0.00-30.01 sec 61.1 MBytes 17.1 Mbits/sec sender

[ 8] 0.00-30.01 sec 61.0 MBytes 17.1 Mbits/sec receiver

[ 10] 0.00-30.01 sec 58.1 MBytes 16.2 Mbits/sec sender

[ 10] 0.00-30.01 sec 58.0 MBytes 16.2 Mbits/sec receiver

[ 12] 0.00-30.01 sec 53.9 MBytes 15.1 Mbits/sec sender

[ 12] 0.00-30.01 sec 53.7 MBytes 15.0 Mbits/sec receiver

[ 14] 0.00-30.01 sec 49.1 MBytes 13.7 Mbits/sec sender

[ 14] 0.00-30.01 sec 49.0 MBytes 13.7 Mbits/sec receiver

[ 16] 0.00-30.01 sec 63.6 MBytes 17.8 Mbits/sec sender

[ 16] 0.00-30.01 sec 63.5 MBytes 17.7 Mbits/sec receiver

[ 18] 0.00-30.01 sec 56.2 MBytes 15.7 Mbits/sec sender

[ 18] 0.00-30.01 sec 56.1 MBytes 15.7 Mbits/sec receiver

[ 20] 0.00-30.01 sec 43.4 MBytes 12.1 Mbits/sec sender

[ 20] 0.00-30.01 sec 43.2 MBytes 12.1 Mbits/sec receiver

[ 22] 0.00-30.01 sec 50.0 MBytes 14.0 Mbits/sec sender

[ 22] 0.00-30.01 sec 49.9 MBytes 13.9 Mbits/sec receiver

[ 24] 0.00-30.01 sec 55.9 MBytes 15.6 Mbits/sec sender

[ 24] 0.00-30.01 sec 55.7 MBytes 15.6 Mbits/sec receiver

[ 26] 0.00-30.01 sec 48.2 MBytes 13.5 Mbits/sec sender

[ 26] 0.00-30.01 sec 48.1 MBytes 13.5 Mbits/sec receiver

[ 28] 0.00-30.01 sec 43.8 MBytes 12.2 Mbits/sec sender

[ 28] 0.00-30.01 sec 43.6 MBytes 12.2 Mbits/sec receiver

[ 30] 0.00-30.01 sec 60.9 MBytes 17.0 Mbits/sec sender

[ 30] 0.00-30.01 sec 60.7 MBytes 17.0 Mbits/sec receiver

[ 32] 0.00-30.01 sec 48.9 MBytes 13.7 Mbits/sec sender

[ 32] 0.00-30.01 sec 48.7 MBytes 13.6 Mbits/sec receiver

[ 34] 0.00-30.01 sec 47.9 MBytes 13.4 Mbits/sec sender

[ 34] 0.00-30.01 sec 47.8 MBytes 13.4 Mbits/sec receiver

[ 36] 0.00-30.01 sec 54.2 MBytes 15.2 Mbits/sec sender

[ 36] 0.00-30.01 sec 54.1 MBytes 15.1 Mbits/sec receiver

[ 38] 0.00-30.01 sec 56.6 MBytes 15.8 Mbits/sec sender

[ 38] 0.00-30.01 sec 56.4 MBytes 15.8 Mbits/sec receiver

[ 40] 0.00-30.01 sec 50.0 MBytes 14.0 Mbits/sec sender

[ 40] 0.00-30.01 sec 49.8 MBytes 13.9 Mbits/sec receiver

[ 42] 0.00-30.01 sec 49.8 MBytes 13.9 Mbits/sec sender

[ 42] 0.00-30.01 sec 49.6 MBytes 13.9 Mbits/sec receiver

[SUM] 0.00-30.01 sec 1.02 GBytes 291 Mbits/sec sender

[SUM] 0.00-30.01 sec 1.01 GBytes 290 Mbits/sec receiver

iperf Done.

idata
Community Manager
86 Views

Hi ADOCE3A,

 

 

Thank you for the input. I sent a PM to you.

 

 

rgds,

 

wb

 

Reply