| ID | | Article Title | Post Date |
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814 | 
| I'm getting low throughput on macOS. How can I fix this? | May-26-22 |
| You may need to set a few parameters to enable higher performance at 10Gb/s.
1) Set the mode to full-duplex, which allows the adapter to send and receive at the same time.
To set full-duplex on macOS, go into the System Preferences->Network and select the Twin10G interfaces. Click the "Advanced..." button in the lower right. In the Advanced window select the "Hardware" tab and set "Configure:" to "Manually". Set duplex to "full-duplex".
2) If your entire network will support it, set packet size to jumbo frames which pack six times as many bytes per packet.
For a large frame to be transmitted intact from end to end, every component on the path must support that frame size. The switches, routers, and NICs from one end to the other must all support the same size of jumbo frame transmission for a successful jumbo frame communication session. Switches that don't support jumbo frames will drop jumbo frames. In the event that both ends agree to jumbo frame transmission, there still needs to be end-to-end support for jumbo frames, meaning all the switches and routers must be jumbo frame enabled. At Layer 2, not all gigabit switches support jumbo frames. Those that do will forward the jumbo frames. Those that don't will drop the frames. For a jumbo packet to pass through a router, both the ingress and egress interfaces must support the larger packet size. Otherwise, the packets will be dropped or fragmented. If the size of the data payload can't be negotiated (this is known as PMTUD, packet MTU discovery) due to firewalls, the data will be dropped with no warning, or "blackholed". And if the MTU isn't supported, the data will have to be fragmented to a supported size and retransmitted, reducing throughput.
To set Jumbo frames on macOS, go into the System Preferences->Network and select the Twin10G interfaces. Click the "Advanced..." button in the lower right. In the Advanced window select the "Hardware" tab and set "Configure:" to "Manually". Set MTU to "Custom" and enter "9000".
3) Not all devices support flow control, or the absence of flow control. If Flow Control is off, turn it on; if it is on, turn it off.
4) Update your macOS to at least 10.13.6. Earlier versions enable SMB signing by default, which can cripple 10Gb networks. Update your macOS, or disable SMB signing. (You can Google how to do this.)
5) If you're in a macOS server environment:
If your Server is running 10.13.6+ enable SMB protocol, and disable AFP protocol.
If your Server is running 10.12.6- enable AFP protocol, and disable SMB protocol.
If your Server is running 10.13.6+, update your clients to 10.13.6+ for a significant performance boost. |
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|
940 | 
| Can I connect an Echo Express SEL, SE I, SE II, SE III or SE IIIe; or Twin 10G to battery power? | Sep-09-19 |
|
972 |
| After I upgraded macOS, the Twin10G, Presto 10GbE, or other Sonnet PCIe card that requires a driver is not loading. | Dec-22-19 |
|
974 |
| Can I get increased performance from Link Aggregation in macOS? | Dec-22-19 |
|
984 |
| Can I connect two computers to one Twin10G? | Aug-06-19 |
|
993 |
| My system crashes, freezes, or fails to connect when I talk to a storage device on the network | May-13-22 |
|
994 |
| My Twin10G or Presto 10GbE is not working on macOS. | Dec-22-19 |
|
1044 |
| My 10G/25G adapter performance drops significantly on a laptop when battery level is low. | Mar-20-23 |
|
1065 |
| I'm getting very slow performance with my Presto 10G PCIe card or Twin10G Thunderbolt 10G adapter with OS X 10.11-10.12. | Dec-22-19 |
| In macOS 10.11 and 10.12, SMB signing is turned on by default. This is no problem for gigabit ethernet, but SMB Signing severely limits the performance of 10 gigabit ethernet. Apple has published a tech note how to turn off SMB signing: "Turn off packet signing for SMB 2 and SMB 3 connections". This note requires the use of the terminal application and a number of terminal commands, so some familiarity with those tools is required.
In macOS 10.13.6+, Apple has turned off SMB signing by default. |
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|
1067 |
| How and when to use two Ethernet ports on a Mac | May-16-22 |
|
1152 |
| Does the Twin10G Thunderbolt Adapters or Presto 10GbE PCIe cards support NIC Teaming under Windows? | May-28-21 |
| NIC Teaming is available in all editions of Windows Server starting with Windows Server 2012. Windows 10 supports NIC Teaming with the installation of Intel Advanced Network Services (ANS). |
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|
1157 |
| On my older TB3 Mac, my 10GbE sometimes becomes non-responsive. | May-13-22 |
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