sorry, my mistake. I was forwarding the mail to my supervisor, instead I sent to usrp.user mailing list. Please don't post it. I could not yet try the last suggestions, because the X310s are out of lab for the last 1 week. Sorry again Sanjoy On Mon, Nov 2, 2015 at 9:38 AM, Sanjoy Basak <sanjoybasak14@gmail.com> wrote: > > On Mon, Oct 19, 2015 at 9:03 PM, Sanjoy Basak <sanjoybasak14@gmail.com> > wrote: > >> Hi Experts, >> We recently bought a 10 Gig ethernet card (X510-DA2) and Twinaxial-Kabel >> SFP+ M SFP+ M 3,0m. I installed it in our pc (OS: Ubuntu Mate 14.04.3 LTS) >> and can communicate with X310/SBX-120 properly. However, the performance we >> are getting is quite poor. I am getting dropped packets (D O) mostly at >> 25,50 MSps and goes quite crazy at 100 MSps and sometimes even at lower >> sample rates. >> Previously I tested with 1 Gig ethernet, at 25 MSps I could stream >> without any drop/late packet or underrun. >> The CPU uses or network uses is also not reaching 100%. >> >> Could you please tell me what to check/correct so I can stream at 100 >> MSps without any error? >> >> I am putting the ifconfig and ethtool results and the kernel version( >> 3.16.0-30-generic) >> >> eth2 Link encap:Ethernet HWaddr 90:e2:ba:a6:a9:dd >> inet6 addr: fe80::92e2:baff:fea6:a9dd/64 Scope:Link >> UP BROADCAST MULTICAST MTU:9000 Metric:1 >> RX packets:4530726 errors:146 dropped:0 overruns:0 frame:146 >> TX packets:6811057 errors:0 dropped:0 overruns:0 carrier:0 >> collisions:0 txqueuelen:1000 >> RX bytes:26331306938 (26.3 GB) TX bytes:35856233935 (35.8 GB) >> >> Settings for eth2: >> Supported ports: [ FIBRE ] >> Supported link modes: 10000baseT/Full >> Supported pause frame use: No >> Supports auto-negotiation: No >> Advertised link modes: 10000baseT/Full >> Advertised pause frame use: No >> Advertised auto-negotiation: No >> Speed: 10000Mb/s >> Duplex: Full >> Port: Other >> PHYAD: 0 >> Transceiver: external >> Auto-negotiation: off >> Cannot get wake-on-lan settings: Operation not permitted >> Current message level: 0x00000007 (7) >> drv probe link >> Link detected: yes >> >> Our computer config is: >> Processor: 12*Intel(R) Xeon (R) CPU E5-2620 v3 @2.40 GHz >> RAM: 65871 MB >> SSD raid 5 >> >> >> Best regards >> Sanjoy >> > >