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ANSWERED Latency Differences Eddie on Host vs Guest

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Hello,

I've been wondering for a while now why my latency on my host with Eddie Client is higher than when I run Eddie within a VM environment. The host is a Windows11 and the VM is Linux. The difference for the same server can be double the latency (23ms on VM vs. 53ms on Host). The VM network is configured as 'Bridged'.

Is this only due to the different OS or are there other reasons why this difference exist?

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Any firewalls/antivirus suites installed? Or "optimizer" software, especially for the network?


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On 1/8/2025 at 5:58 PM, airvpn_dw said:

I've been wondering for a while now why my latency on my host with Eddie Client is higher than when I run Eddie within a VM environment. The host is a Windows11 and the VM is Linux. The difference for the same server can be double the latency (23ms on VM vs. 53ms on Host). The VM network is configured as 'Bridged'.


Hello!

if the answer to the important previous question by OpenSourcerer is no, and in particular when the performance gap involves even transport layers such as TCP and UDP, it's not an infrequent experience. The optimization of the Linux TCP/IP stack is definitely superior, and when you bridge a Linux VM to the network interface you get rid of (you bypass it completely) Windows TCP/IP stack. A similar occurrence takes place when you create a FreeBSD VM in bridge mode, in a Linux host: although the network interface driver can be the same (FreeBSD ports a lot of drivers, including network card ones, from Linux) the FreeBSD VM networking shows lower round trip times and higher throughput than the host.

Kind regards
 

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5 hours ago, OpenSourcerer said:

Any firewalls/antivirus suites installed? Or "optimizer" software, especially for the network?

I've got the default Windows Defender Firewall enabled and a F-Secure antivirus program running. Unfortunately I'm not able to find a some settings quickly (within the anti-virus) in which I can exclude or change to favour Eddie as an application. I'll check whether there is something I can do to improve the situation.
 

5 hours ago, Staff said:

Hello!

if the answer to the important previous question by OpenSourcerer is no, and in particular when the performance gap involves even transport layers such as TCP and UDP, it's not an infrequent experience. The optimization of the Linux TCP/IP stack is definitely superior, and when you bridge a Linux VM to the network interface you get rid of (you bypass it completely) Windows TCP/IP stack. A similar occurrence takes place when you create a FreeBSD VM in bridge mode, in a Linux host: although the network interface driver can be the same (FreeBSD ports a lot of drivers, including network card ones, from Linux) the FreeBSD VM networking shows lower round trip times and higher throughput than the host.

Kind regards
 
Thanks for the explanation, it can explain the difference between the environments indeed.

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23 hours ago, airvpn_dw said:

I've got the default Windows Defender Firewall enabled and a F-Secure antivirus program running. Unfortunately I'm not able to find a some settings quickly (within the anti-virus) in which I can exclude or change to favour Eddie as an application. I'll check whether there is something I can do to improve the situation.


Uninstalling is the quickest remedy. And probably solution for a plethora of problems like degraded PC and network performance, increased attack opportunities for malware and loss of money (and probably thermonuclear war).

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3 hours ago, OpenSourcerer said:

Uninstalling is the quickest remedy. And probably solution for a plethora of problems like degraded PC and network performance, increased attack opportunities for malware and loss of money (and probably thermonuclear war).
The probable thermonuclear war is a red line for me. I'll try to life with the current situation for now and will see if there is some other thinkable solution (preferably without any mayhem).

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On 1/12/2025 at 7:05 PM, airvpn_dw said:

The probable thermonuclear war is a red line for me. I'll try to life with the current situation for now and will see if there is some other thinkable solution (preferably without any mayhem).


No, seriously, uninstall it and test again. In 2025 you don't need any other solution but Defender on Windows.

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LZ1's New User Guide to AirVPN « Plenty of stuff for advanced users, too!

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