Re: [Openvpn-users] Re: Openvpn slow on asymmetric connections

[Jon Bendtsen <jon.bendtsen@xxxxxxxxxx>]

I would still like to try improving windows performance. Could you  
try playing
with the mtu sizes?


JonB

Den lørdag 7.jan kl. 0:58 skrev George Thompson:

> Hey there,
> My laptop harddrive just died.  I am now using Knoppix Linux from a CD
> to use my computer.  I installed Openvpn and connected to my server.
> Now that I am using Linux I am getting the full speed.  I am now
> getting around 14.2 mbits/s down and 1.7 mbits/s up though the tunnel.
>  I am assuming this is a Windows issue.  I tried openvpn on my
> brothers computer.  He has Windows Xp and it was running slow.  But
> when I booted up Linux on his computer, Openvpn ran at full speed
>
> Thanks
>
> On 1/6/06, Jon Bendtsen <jon.bendtsen@xxxxxxxxxx> wrote:
> > Den fredag 6.jan kl. 2:31 skrev George Thompson:
> >
> > > Hi there,
> > >     Using the other connection (comcast) slowed it down.  Probable
> > > becuse my uploaded for it is slower. 1 mbits/s compared to 2mbits/
> > > s  I have with Verizon.  My downloads outside of the tunnel are
> > > fast.  I just finished downloading the Slackware 10.2 ISO.  The
> > > download average outside the tunnel was around 13.2 mbits/s.
> > > Inside the tunnel it is still around 1.7 mbits/s.  I tried the
> > > connection at the university again.  Over there I get a little over
> > > 10mbits/s though the tunnel, and about the same outside the tunnel.
> >
> > Did you try with different packet sizes? I would like you to read
> > the manpage and look at:
> > --link-mtu n
> > --tun-mtu n
> > --tun-mtu-extra n
> > --mtu-disc type
> > --mtu-test
> > --fragment max
> > --mssfix max
> > --sndbuf size
> > --rcvbuf size
> > --txqueuelen n
> >
> >
> > Maybe also:
> > --shaper n
> > --passtos
> > --tcp-queue-limit n
> >
> >
> >
> > If neither of that works, i have no further ideas, other than to let
> > James take a look at your problem. I think he reads the mailinglist
> > as well. If it is ever solved, i would like to hear the solution.
> >
> >
> >
> > JonB
>
>
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