Sangfor Community»Categories Products aCloud (HCI) Windows Server 2022 (VM) cannot get 10Gbps throughpu ...

Windows Server 2022 (VM) cannot get 10Gbps throughput test via iperf

views: 3947 | comments: 15 | added to Favorites 0
Lights on | 提示:支持键盘翻页<-左 右->
    组图打开中,请稍候......
Created: 27 Feb 2024 12:37

Summary:

Dear all, I am using the Sangfor HCI , with the cluster setup environment 3 hosts. Unfortunately all WIndows Server VM not able to get 10Gbps bandwidth throughput between each VMs. I am suspect someth ...

Reply

Newbie290036 Posted 11 Mar 2024 13:43
To diagnose and resolve the issue with Windows Server VMs not achieving 10Gbps bandwidth throughput in a Sangfor HCI environment with 3 hosts, you should first verify the network configuration of the virtual network adapters, ensuring they are correctly set up for 10Gbps connectivity. Check for any misconfigurations or limitations that might prevent the full bandwidth utilization. Next, update the network card drivers and adapters for both the host and guest operating systems, as outdated drivers might not support the full bandwidth capabilities of the network interface.

After ensuring the VM settings are appropriate, with the right number of virtual processors and memory, assess the network for congestion or bottlenecks. This could involve analyzing the network topology, checking for network congestion, or optimizing the network configuration to improve bandwidth between the VMs.

Additionally, validate the hypervisor and HCI settings, including network and storage settings, as well as the overall HCI cluster configuration. If the issue persists, consult Sangfor technical support for further assistance, as they can provide more specific guidance based on your HCI environment and configuration. By addressing these aspects, you can identify and resolve potential issues with the network card drivers/adapters and improve the bandwidth throughput for your Windows Server VMs in the Sangfor HCI setup.
Tayyab0101 Posted 07 Mar 2024 14:33
its a known issue.
HCI_JR89 Posted 07 Mar 2024 12:56
Hi All,
Did the following setup in earlier stage, but the problem still not resolve
1. network adapter automatically configured as 10Gbps - YES
2. enable high performance mode (Jumbo Frame) - YES
3. network driver using latest driver , installed properly - YES
4. remove third party software - antivirus, backup software, etc. - YES

Not try yet using others Operating System such as linux, because the production system using windows server 2022.
Prosi Posted 06 Mar 2024 21:42
There are known issues with Hyper-V on Server 2019 and horrible network performance which is knowing the OS is important here. Numerous threads on the subject.



Farina Ahmed Posted 06 Mar 2024 15:33
This may be related to network card drivers or adapter settings. At first ensure that the network cards on both the host and the VMs support 10Gbps speeds and are properly configured to utilize it. Check for any driver updates or compatibility issues that might be impacting performance. Also verify that the network configuration within the HCI cluster is optimized for high-speed communication and that there are no bottlenecks or limitations within the network infrastructure.
pmateus Posted 06 Mar 2024 00:39
Hi,

If you reach 4 or 5 Gbps i suspect that the issue is related with jumbo frames not being enabled.
Enrico Vanzetto Posted 05 Mar 2024 23:35
Hi, have you double check that there's no ohter vm that are using net network when you are performing speed test? Try use iperf in client/server mode and do a simple test from two vm that are on the same hci host.
After that, ensure that there's no other process (third part backup or another program) that comsume network bandwidth and redo the same test on two virtual machine sthat are on a different hci nodes.
Zonger Posted 05 Mar 2024 20:29
Please follow below steps to troubleshoot the issue with the 10Gbps bandwidth throughput between Windows Server VMs in your Sangfor HCI environment.

1. Verify network configuration:
        * Check if the network adapters in your Windows Server VMs are configured for 10Gbps speed and full-duplex mode.
        * Ensure that the network adapters are compatible with the 10Gbps network speed.
2. Update network card drivers/adapters:
        * Check for any available updates for the network card drivers/adapters on the Windows Server VMs.
        * Install the latest drivers/adapters to ensure optimal network performance.
3. Test network connectivity:
        * Use tools like Ping, Ping Plotter, or Wireshark to test the network connectivity between the VMs. This will help identify if there are any connectivity issues between the VMs.
4. Check network congestion:
        * Monitor the network traffic and resource utilization on the host servers and network switches. High congestion might limit the throughput between the VMs.
5. Verify Sangfor HCI configuration:
        * Check the network configuration and settings on the Sangfor HCI cluster, including MTU size, jumbo frames, and network QoS settings.
        * Ensure that the network settings on the HCI cluster are optimized for 10Gbps throughput.
6. Test with a different OS:
        * If possible, test the throughput between VMs running a different operating system to rule out any OS-specific issues.

Hope, you should be able to identify and resolve the issue with the 10Gbps bandwidth throughput between your Windows Server VMs in the Sangfor HCI environment.
jerome_itable Posted 05 Mar 2024 16:32
Several factors beyond network card drivers/adapters can contribute to not achieving 10 Gbps bandwidth throughput between Windows Server VMs on your Sangfor HCI with 3 hosts. Here are some potential causes and troubleshooting steps to investigate:

1. Verify Hardware Configuration:

    Network interface card (NIC) type: Ensure all VMs and physical hosts involved in the communication have 10 Gbps capable NICs. Check the specifications of your Sangfor HCI model and the installed NICs.
    Cabling: Use Cat 6A or higher rated cables to support 10 Gbps speeds. Faulty or incompatible cables can bottleneck performance.
    Switch configuration: Verify that the switch ports connecting the hosts and VMs are configured for 10 Gbps full duplex mode. Consult your switch's documentation for specific configuration steps.

2. Explore Software Configuration:

    Virtual Switch (vSwitch) settings: Within the Sangfor HCI management interface, check the vSwitch settings for:
        MTU (Maximum Transmission Unit): Ensure it's set to 9000 bytes for optimal 10 Gbps performance.
        Teaming policy: If NIC teaming is enabled, verify the teaming mode is appropriate for your scenario (e.g., "balance-rr" for round-robin load balancing).
    Windows Server NIC driver updates: Ensure up-to-date network drivers are installed on all Windows Server VMs. Outdated drivers might not support full 10 Gbps functionality.

3. Identify Bottlenecks and Measure Performance:

    Storage performance: While unlikely the main culprit, consider if slow storage access on the Sangfor HCI is causing a bottleneck. Run storage benchmarks to assess performance.
    CPU and RAM limitations: Monitor CPU and RAM utilization on both VMs and hosts during attempted 10 Gbps transfers. High resource usage can impact network performance.
    Benchmarking tools: Use network benchmarking tools like iperf3 to measure actual achievable bandwidth between VMs. This can help isolate the issue to specific VMs or network segments.

4. Additional Considerations:

    Virtualization overhead: While minimal, virtualization can introduce some overhead and might not reach the exact 10 Gbps wire speed.
    Sangfor support: If you've exhausted the above and still encounter issues, consult Sangfor support. They can provide specific guidance and troubleshooting steps based on your Sangfor HCI model and configuration.