LZO compression doesn't seem to increase upload speed?



  • Hi I am using PFSense as a vpn client on a dual core atom proc 1.5ghz and don't seem to be getting any boost on my upload speed when LZO compression is enabled with OpenVPN. I can change the settings at my vpn providers website to either have it enabled or not. I tried it on my windows PC too but it is not getting a speed boost from it either with openvpn, but if I connect pptp or l2tp or even sstp and turn it on with those it literally doubles the upload speed from 5Mbs to 10Mbs which is also double what my speed cap is from ISP. I don't quite understand why it would work so well with upload speed with the other protocols but not openvpn all it does with openvpn on the pfsense box is double the latency/ping. But on the windows machine it doesn't affect the latency hardly at all. Throughput is much better with openvpn on pfsense then on windows though :) not really sure why because it is a much less powerful machine. But I am really wondering about the compression and if others have noticed it or not and whether others that are using it as a client can verify this.

    Plus my vpn provider does not have all their ports stealthed with their OpenVPN servers but they do with PPTP,L2TP and SSTP and people wonder why I want L2TP implementation as client for VPN. You think OpenVPN is more secure but I'm pretty sure thats what they want you to think. I would bet money all the certificate providers as soon as one is generated the government gets a copy from the provider themselves. Maybe what do you think? Huge cyber monitoring center being built Under construction by contractors with top-secret clearances, the blandly named Utah Data Center is being built for the National Security Agency and the total information awareness office and Office of Cybersecurity and Communications. (So these certificates that I get from my VPN does my VPN provider make them or do they actually come from some certificate authority data center and if they do? You can bet your ass that OpenVPN is most certainly not secure. If someone can tell me where these certs come from, I would like to know. I haven't looked into it yet.



  • Compression doesn't necessarily increase performance. Especially with a VPN provider with resources being used by many people. You have no idea or control over their resource constraints. If they're CPU-bound on the server, enabling compression is likely to decrease performance.



  • @cmb:

    Compression doesn't necessarily increase performance. Especially with a VPN provider with resources being used by many people. You have no idea or control over their resource constraints. If they're CPU-bound on the server, enabling compression is likely to decrease performance.

    If I do an internet speed test at www.speedtest.net and I am using PPTP,L2TP or SSTP every time it doubles my upload speed every time. But with OpenVPN it doesn't affect upload speed at all for the speed test never it only doubles my ping which doesn't happen from my computer with the other protocols. The only one that it does not seem to work on is OpenVPN when ran from my computer as well. Was wondering if anyone else with paid vpn can verify this. By the way my internet speed is the same whether I am connected or not to the VPN. Servers are close to me and never overloaded. Except for my upload doubles when I have LZO compression enabled and connected to vpn on all protocols except OpenVPN. My Upload speed cap is 5Mbs but with LZO it goes up to around 10Mbs Except for when I try it with OpenVPN and I am talking specifically about upload it is the only thing with any of the protocols that is affected that I see at least with that particular test.



  • I figured out the LZO compression problem I had with StrongVPN and OpenVPN. The correct command in the advanced configuration is comp-lzo yes;

    comp-lzo; and comp-lzo adaptive; does not make it work with upload. The comp-lzo yes; is the only one that worked at speeding up upload now my upload is more than twice as fast as my isp's bandwidth limit of 5Mbs :) I'm getting around 11Mbs upload.


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