Plugable debuts new USB-C 2.5Gbps Ethernet Adapter

Comments

• Reply 1 of 8

  omar morales Posts: 60member

  March 24, 2020 2:23PM

  How do I exactly get the $10 launch discount? it showing up at regular price. 

  
• Reply 2 of 8

  Mike Wuerthele Posts: 6,861administrator

  March 24, 2020 2:24PM

  omar morales said:

  How do I exactly get the $10 launch discount? it showing up at regular price. 

  We'll talk to Plugable about it.
  
  Edit - there you go, coupon code added to the article.

  edited March 2020
• Reply 3 of 8

  cpsro Posts: 3,198member

  March 24, 2020 4:51PM

  fyi: in my experience, even between the fastest Macs connected via 10GbE, a single "scp" file transfer tops out at about 260 MB/s or 2.1 Gbps. To make more use of 10GbE bandwidth, multiple simultaneous streams must be run, and even then the max. throughput is about half of the theoretical bandwidth.
  In other words, this dongle is likely to provide perfectly adequate service and much better throughput than 1GbE at a very reasonable price and with little added heft. 10 GbE dongles are far more expensive, very heavy, and also consume a lot of power.
  
  

  edited March 2020
• Reply 4 of 8

  omar morales Posts: 60member

  March 24, 2020 5:35PM

  Mike Wuerthele said:

  omar morales said:

  How do I exactly get the $10 launch discount? it showing up at regular price. 

  We'll talk to Plugable about it.
  
  Edit - there you go, coupon code added to the article.

  Thanks 

  
• Reply 5 of 8

  BigDann Posts: 66member

  March 24, 2020 9:10PM

  cpsro said:

  fyi: in my experience, even between the fastest Macs connected via 10GbE, a single "scp" file transfer tops out at about 260 MB/s or 2.1 Gbps. To make more use of 10GbE bandwidth, multiple simultaneous streams must be run, and even then the max. throughput is about half of the theoretical bandwidth.
  In other words, this dongle is likely to provide perfectly adequate service and much better throughput than 1GbE at a very reasonable price and with little added heft. 10 GbE dongles are far more expensive, very heavy, and also consume a lot of power.
  
  

  The issue is the limitations of the drive and any heavy processing which is competing with the file transfer. And you still have the limits of the Thunderbolt3/USB-C services. Its still faster than WiFi ;-}

  edited March 2020
• Reply 6 of 8

  cpsro Posts: 3,198member

  March 24, 2020 9:51PM

  BigDann said:

  cpsro said:

  fyi: in my experience, even between the fastest Macs connected via 10GbE, a single "scp" file transfer tops out at about 260 MB/s or 2.1 Gbps. To make more use of 10GbE bandwidth, multiple simultaneous streams must be run, and even then the max. throughput is about half of the theoretical bandwidth.
  In other words, this dongle is likely to provide perfectly adequate service and much better throughput than 1GbE at a very reasonable price and with little added heft. 10 GbE dongles are far more expensive, very heavy, and also consume a lot of power.
  
  

  The issue is the limitations of the drive and any heavy processing which is competing with the file transfer. And you still have the limits of the Thunderbolt3/USB-C services. Its still faster than WiFi ;-}

  Sorry, it's not the drive and it's not any limitation of Thunderbolt 3 (which is much faster than 10GbE). The internal SSD drives can read and write >10X the "scp" network throughput. The Macs are unloaded.  And the 10GbE adapters are built-in anyway. scp has computational overhead though that taxes even the fastest processors available.
  Let us know when you've tried it rather than shooting from the hip!

  
• Reply 7 of 8

  Pylons Posts: 32member

  March 25, 2020 8:00AM

  cpsro said:

  BigDann said:

  cpsro said:

  fyi: in my experience, even between the fastest Macs connected via 10GbE, a single "scp" file transfer tops out at about 260 MB/s or 2.1 Gbps. To make more use of 10GbE bandwidth, multiple simultaneous streams must be run, and even then the max. throughput is about half of the theoretical bandwidth.
  In other words, this dongle is likely to provide perfectly adequate service and much better throughput than 1GbE at a very reasonable price and with little added heft. 10 GbE dongles are far more expensive, very heavy, and also consume a lot of power.
  
  

  The issue is the limitations of the drive and any heavy processing which is competing with the file transfer. And you still have the limits of the Thunderbolt3/USB-C services. Its still faster than WiFi ;-}

  Sorry, it's not the drive and it's not any limitation of Thunderbolt 3 (which is much faster than 10GbE). The internal SSD drives can read and write >10X the "scp" network throughput. The Macs are unloaded.  And the 10GbE adapters are built-in anyway. scp has computational overhead though that taxes even the fastest processors available.
  Let us know when you've tried it rather than shooting from the hip!

  First, check that there is nothing else that limits your speed. Run a test with e.g. iperf in the terminal.
  If that is also limited, start checking your network settings, e.g. jumbo frame size.
  If iperf manages to get above 9 Gbps but scp won't, it may have to be due to a demanding encryption.
  You can change encryption (cipher) by adding e.g. -c arcfour,blowfish-cbc to your scp command (to change defaults edit your .ssh config file, more info here).
• Reply 8 of 8

  cpsro Posts: 3,198member

  March 25, 2020 8:24PM

  Pylons said:

  cpsro said:

  First, check that there is nothing else that limits your speed. Run a test with e.g. iperf in the terminal.
  If that is also limited, start checking your network settings, e.g. jumbo frame size.
  If iperf manages to get above 9 Gbps but scp won't, it may have to be due to a demanding encryption.
  You can change encryption (cipher) by adding e.g. -c arcfour,blowfish-cbc to your scp command (to change defaults edit your .ssh config file, more info here).

  Through several tests, with the system otherwise quiescent, scp pegged at 100% CPU and pushing only 260 MB/s over 10GbE, scp looks processor-bound. iperf reports 9.3 Gbps (Mac Pro -> MBP16 with 10GbE TB3 dock).
  Yes, a cipher with less overhead speeds things up. Arcfour isn't available, but using optional aes128-ctr, a single scp can shove 670 MB/s over the wire. Two of these jobs simultaneously achieve about 1030 GB/s combined.
  

  edited March 2020