Output Saturation Error - OpenVPN Users

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Message from discussion Output Saturation Error
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Date: Sat, 30 May 2009 09:40:46 +0600
Message-ID: <9618647f0905292040v71694282n877248229fda0...@mail.gmail.com>
From: Nyamul Hassan <mnhas...@usa.net>
To: OpenVPN List <openvpn-us...@lists.sourceforge.net>
Subject: Re: [Openvpn-users] Output Saturation Error
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Hi,
To add my config a bit more:

Server is a AMD Opteron Dual Core with 4G RAM hosted in a data center with
50Mbps limit
Host is a Intel Core 2 Duo with 4G RAM hosted locally sharing a 50 Mbps line

We are trying to run a VoIP application over this link, and we're seeing
these errors, couple with high latency variations.

Can someone please advise?

Regards
HASSAN




On Thu, May 28, 2009 at 4:00 PM, Nyamul Hassan <mnhas...@usa.net> wrote:

> Hi,
>
> We have started running a small VPN link between two remote destination,
> and
> we are getting the following error:
>
> Thu May 28 15:57:27 2009 us=721222 xxx/a.b.c.d:z MULTI: packet dropped due
> to output saturation (multi_process_incoming_tun)
> Thu May 28 15:57:27 2009 us=721806 xxx/a.b.c.d:z MULTI: packet dropped due
> to output saturation (multi_process_incoming_tun)
> Thu May 28 15:57:27 2009 us=723656 xxx/a.b.c.d:z MULTI: packet dropped due
> to output saturation (multi_process_incoming_tun)
> Thu May 28 15:57:27 2009 us=724482 xxx/a.b.c.d:z MULTI: packet dropped due
> to output saturation (multi_process_incoming_tun)
> Thu May 28 15:57:27 2009 us=724504 xxx/a.b.c.d:z MULTI: packet dropped due
> to output saturation (multi_process_incoming_tun)
> Thu May 28 15:57:27 2009 us=724804 xxx/a.b.c.d:z MULTI: packet dropped due
> to output saturation (multi_process_incoming_tun)
> Thu May 28 15:57:27 2009 us=726005 xxx/a.b.c.d:z MULTI: packet dropped due
> to output saturation (multi_process_incoming_tun)
> Thu May 28 15:57:27 2009 us=726027 xxx/a.b.c.d:z MULTI: packet dropped due
> to output saturation (multi_process_incoming_tun)
> Thu May 28 15:57:27 2009 us=726448 xxx/a.b.c.d:z MULTI: packet dropped due
> to output saturation (multi_process_incoming_tun)
> Thu May 28 15:57:27 2009 us=727143 xxx/a.b.c.d:z MULTI: packet dropped due
> to output saturation (multi_process_incoming_tun)
>
> There is no shortage of BW in either end.  Interestingly, even when the
> tunnel size is only ~250kbps, it suddenly gives a few bursts of these
> errors.  Then, it stops giving these errors.  Then, the tunnel size keeps
> increasing, and intermittently, these errors show up for a second or so.
>
> Could someone point to me what I could be doing wrong?
>
> Regards
> HASSAN
>
>
>
> ------------------------------------------------------------------------------
> Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT
> is a gathering of tech-side developers & brand creativity professionals.
> Meet
> the minds behind Google Creative Lab, Visual Complexity, Processing, &
> iPhoneDevCamp as they present alongside digital heavyweights like Barbarian
> Group, R/GA, & Big Spaceship. http://p.sf.net/sfu/creativitycat-com
> _______________________________________________
> Openvpn-users mailing list
> Openvpn-us...@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/openvpn-users
>
>

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Hi,<div><br></div><div>To add my config a bit more:</div><div><br></div><di=
v>Server is a AMD Opteron=A0Dual Core=A0with 4G RAM hosted in a data center=
 with 50Mbps limit</div><div>Host is a Intel Core 2 Duo with 4G RAM hosted =
locally sharing a 50 Mbps line</div>
<div><br></div><div>We are trying to run a VoIP application over this link,=
 and we&#39;re seeing these errors, couple with high latency variations.</d=
iv><div><br></div><div>Can someone please advise?</div><div><br></div><div>
Regards</div><div>HASSAN</div><div><br></div><div><br></div><div><br><br><d=
iv class=3D"gmail_quote">On Thu, May 28, 2009 at 4:00 PM, Nyamul Hassan <sp=
an dir=3D"ltr">&lt;<a href=3D"mailto:mnhas...@usa.net">mnhas...@usa.net</a>=
&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex;">Hi,<br>
<br>
We have started running a small VPN link between two remote destination, an=
d<br>
we are getting the following error:<br>
<br>
Thu May 28 15:57:27 2009 us=3D721222 xxx/a.b.c.d:z MULTI: packet dropped du=
e<br>
to output saturation (multi_process_incoming_tun)<br>
Thu May 28 15:57:27 2009 us=3D721806 xxx/a.b.c.d:z MULTI: packet dropped du=
e<br>
to output saturation (multi_process_incoming_tun)<br>
Thu May 28 15:57:27 2009 us=3D723656 xxx/a.b.c.d:z MULTI: packet dropped du=
e<br>
to output saturation (multi_process_incoming_tun)<br>
Thu May 28 15:57:27 2009 us=3D724482 xxx/a.b.c.d:z MULTI: packet dropped du=
e<br>
to output saturation (multi_process_incoming_tun)<br>
Thu May 28 15:57:27 2009 us=3D724504 xxx/a.b.c.d:z MULTI: packet dropped du=
e<br>
to output saturation (multi_process_incoming_tun)<br>
Thu May 28 15:57:27 2009 us=3D724804 xxx/a.b.c.d:z MULTI: packet dropped du=
e<br>
to output saturation (multi_process_incoming_tun)<br>
Thu May 28 15:57:27 2009 us=3D726005 xxx/a.b.c.d:z MULTI: packet dropped du=
e<br>
to output saturation (multi_process_incoming_tun)<br>
Thu May 28 15:57:27 2009 us=3D726027 xxx/a.b.c.d:z MULTI: packet dropped du=
e<br>
to output saturation (multi_process_incoming_tun)<br>
Thu May 28 15:57:27 2009 us=3D726448 xxx/a.b.c.d:z MULTI: packet dropped du=
e<br>
to output saturation (multi_process_incoming_tun)<br>
Thu May 28 15:57:27 2009 us=3D727143 xxx/a.b.c.d:z MULTI: packet dropped du=
e<br>
to output saturation (multi_process_incoming_tun)<br>
<br>
There is no shortage of BW in either end. =A0Interestingly, even when the<b=
r>
tunnel size is only ~250kbps, it suddenly gives a few bursts of these<br>
errors. =A0Then, it stops giving these errors. =A0Then, the tunnel size kee=
ps<br>
increasing, and intermittently, these errors show up for a second or so.<br=
>
<br>
Could someone point to me what I could be doing wrong?<br>
<br>
Regards<br>
HASSAN<br>
<br>
<br>
---------------------------------------------------------------------------=
---<br>
Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT<br>
is a gathering of tech-side developers &amp; brand creativity professionals=
. Meet<br>
the minds behind Google Creative Lab, Visual Complexity, Processing, &amp;<=
br>
iPhoneDevCamp as they present alongside digital heavyweights like Barbarian=
<br>
Group, R/GA, &amp; Big Spaceship. <a href=3D"http://p.sf.net/sfu/creativity=
cat-com" target=3D"_blank">http://p.sf.net/sfu/creativitycat-com</a><br>
_______________________________________________<br>
Openvpn-users mailing list<br>
<a href=3D"mailto:Openvpn-us...@lists.sourceforge.net">Openvpn-users@lists.=
sourceforge.net</a><br>
<a href=3D"https://lists.sourceforge.net/lists/listinfo/openvpn-users" targ=
et=3D"_blank">https://lists.sourceforge.net/lists/listinfo/openvpn-users</a=
><br>
<br>
</blockquote></div><br></div>

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Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT 
is a gathering of tech-side developers & brand creativity professionals. Meet
the minds behind Google Creative Lab, Visual Complexity, Processing, & 
iPhoneDevCamp as they present alongside digital heavyweights like Barbarian 
Group, R/GA, & Big Spaceship. http://p.sf.net/sfu/creativitycat-com 
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