Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Sign In Register

Quick Links


Categories

In this Discussion

› › Why OpenVPN is so slow? (cool story) - Page 2
New on LowEndTalk? Please Register and read our Community Rules.

All new Registrations are manually reviewed and approved, so a short delay after registration may occur before your account becomes active.

Why OpenVPN is so slow? (cool story)

2»

Comments

  • wilwilwilwil Member

    Hi,
    It's really very useful discussion. And your fix really helped me. With OpenVPN I used to have down: 5Mbs/s- up:5Mbits/s (my original connexion 20Mbits up and down). But after the fix both up and down are fixed but :
    -For Download : I get nearly the original speed connexion (17-18-19 Mbits/s)
    -But for Upload: I always have difference of (3-5Mbits/s) in each test I did.

    Have you an Idea about this ??? And thanks
    (Knowing that I work with TCP protocol, Tun interface & The server is on Linux machine but clients are windows8 machines).

  • NomadNomad Member

    So, today in IRC I've been told that in the next release they'll be implementing sndbuf 0 and rcvbuf 0 values as default.

    I love necromancy btw.

    Thanked by 1netomx
  • ValdikSSValdikSS Member

    @Nomad said:
    So, today in IRC I've been told that in the next release they'll be implementing sndbuf 0 and rcvbuf 0 values as default.

    I love necromancy btw.

    That's true, it would be included in 2.3.9 with other cool speed fixes.

  • bashedbashed Member

    would be faster if it support more than 1 thread / 1+ cpu cores. Waiting on openvpn 3, seems like they been working on this for some time, years?

  • ZEROFZEROF Member
    edited December 2015

    Great tip @ValdikSS, got almost full home internet speed. And i have dns cache server with dnsmasq (set on BeagleBone), now all goes very fast on my side.

  • ValdikSSValdikSS Member

    @ZEROF great! We'll release 2.3.9 this Monday with this fix enabled by default.

  • ZEROFZEROF Member
    edited December 2015

    DNS cache (dnsmasq) + OpenVPN give me dig query time 7msec and ping 20,9 ms (over wifi connection, not cable). That is fine for me :). I don't know when Debian will push new version to their repository (now 2.3.4), i will stick with this settings for now.

  • AxiomCSAxiomCS Member

    I know this is an old discussion. Just wanted to say thanks for the info. It saved me a headache I was having.

    Thanked by 2RedSox dahartigan
  • blackhidenblackhiden Member

    Awesome article.
    Rn, I'm actively learning about this protocol.

    One question sir.
    You said:

    @ValdikSS said: That means that if you're connecting to other VPN site over long fat link, i.e. USA to Russia with ping about 100 ms, you can't get speed more than 5.12 Mbit/s with default OpenVPN buffer settings

    In my next experiment I will try this, but in local environment (2 vm's with private addresses) which has less than 1ms ping.
    So, will this configuration work?

  • chocolateshirtchocolateshirt Member

    Neecroooo

  • ErawanArifNugrohoErawanArifNugroho Member

    Necromancer

  • TimboJonesTimboJones Member

    @blackhiden said:
    Awesome article.
    Rn, I'm actively learning about this protocol.

    One question sir.
    You said:

    @ValdikSS said: That means that if you're connecting to other VPN site over long fat link, i.e. USA to Russia with ping about 100 ms, you can't get speed more than 5.12 Mbit/s with default OpenVPN buffer settings

    In my next experiment I will try this, but in local environment (2 vm's with private addresses) which has less than 1ms ping.
    So, will this configuration work?

    Check back in six years for the reply.

    Thanked by 1dahartigan
  • henixhenix Member

    Holy necro

  • defaultdefault Veteran

  • blackhidenblackhiden Member

    well, better late than nothing.

  • jmgcaguiclajmgcaguicla Member

    @blackhiden said:
    well, better late than nothing.

    Just open a new thread, this has been necro'd 2 times by now

  • ValdikSSValdikSS Member

    @blackhiden said:
    In my next experiment I will try this, but in local environment (2 vm's with private addresses) which has less than 1ms ping.
    So, will this configuration work?

    You don't need to adjust buffer sizes anymore on new OpenVPN versions. This issue has been fixed for several years.

  • ValdikSSValdikSS Member

    @TimboJones said:
    Check back in six years for the reply.

    Lowendtalk sends email notifications for your topics, just like any proper forum.

  • TimboJonesTimboJones Member

    @ValdikSS said:

    @TimboJones said:
    Check back in six years for the reply.

    Lowendtalk sends email notifications for your topics, just like any proper forum.

    whoosh

    Thanks Captain Obvious.

Sign In or Register to comment.