Windows Server Memory Usage

[shemeck]

Hi,

We are using softether verision 4.38 as a vpn server with L2TP. We are using sercure NAT because of DHCP, but still softether service is increasing memory usage even for 10GB and more. What should we check?

Kind Regards

[solo]

My SE server in bridged mode and 1 client, mem:

Code: Select all

Image Name                   PID Session Name     Session#    Mem Usage
========================= ====== ================ ======== ============
vpnclient.exe               1372                         0     20,496 K
vpncmgr.exe                 1396                         0     22,072 K
vpnclient.exe               1808                         0     31,488 K
vpnserver.exe               1900                         0     17,408 K

You could bridge it too, disable SecureNAT and use "Open DHCP Server" on Windows (dnsmasq on Linux).

[shemeck]

Hi solo,

thanks for reply

that means it is a known issue with memory and SecureNAT? It was investigated in the past somehow? Do You know what is the cause?


Kind Regards

[solo]

Hello, I did not imply that, however bridging delivers better throughput. As for memory usage, reboot the server and compare the output of "tasklist" with and without users.

[shemeck]

Hi,

Sorry for late post. You mean to start server and disconnect cable? I think You have right memory pumping is synced with data transfer. If it will be no memory pumping without users what then?

Maybe it is because I have client and server on same system?

Kind Regards

[solo]

Maybe it is because I have client and server on same system?

Maybe. Try bridging and remove the client.

[shemeck]

Hi,

I tried to make new clean windows installation with same hub. Same situation, server is pumping up memory. When no client is connected then everything is ok.

What I saw that I get information (warning) about too big packets, but it is only warning.

Kind Regards
Przemek

[solo]

Please report it here https://github.com/SoftEtherVPN/SoftEtherVPN/issues

[shemeck]

Hi Solo,

I will. Also checked same situation on linux version.

Kind Regards

[shemeck]

Hi Solo,

I tried with disabled SecureNAT and with Windows Server DHCP feature. So far no memory problem. I will give You info after few days. Also CPU utilization is very low now.

Kind Regards

[solo]

Hello Przemek, this is good news for your VPN, but not so good for SecureNAT's reputation though if both Windows and Linux are affected. Please report it anyway and keep us updated as it is a very interesting issue.

[shemeck]

Hi Solo,

Chcecked after few days and now I can see that is about 40MB / day more. So today it is about 300MB yesterday was 260MB. So maybe situation is very similar but without NAT there is less to store in memory?

What else I can check? Maybe it is because I'm usint L2TP?

Kind Regards

[shemeck]

Hi Solo,

After few days we can see that is stable 150-300MB (20 clients).

Kind Regards