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Well we are getting 1 - 5% packet loss to one of the real servers. We may
have a layer 2 issue here, or perhaps something physical I'll let you know
what we turn up. Thanks for your time and suggestions.
On 8/1/07, Joseph Mack NA3T <jmack@xxxxxxxx> wrote:
>
> On Wed, 1 Aug 2007, Dan Baughman wrote:
>
> > Thanks for the suggestions so far, here is what the dumps yielded.
> >
> > I'm using ethereal to look at a side-by-side comparison of
> > a healthy conversation and one of the delayed
> > conversations. The delayed conversation has two tcp
> > packet types that the normal conversation doesn't:
> >
> > 1) A lot of duplicate acks from the client to the server
>
> do both get to the realserver?
>
> > 2) TCP Retransmissions from the server to client.
>
> do both transmissions arrive at the client? (I assume they
> leave the realserver.)
>
> > It seems that there is a lot of traffic being duplicated
> > and received by the real server twice. This isn't
> > occuring when they access the realserver ip to view the
> > site. The extra load time is occuring after the server
> > receives such a duplicate ack, its a pause of about 3
> > seconds, then a tcp retransmission occurs.
>
> hmm. Nothing springs to mind.
>
> do you have any iptables rules anywhere?
>
> is the unhealthy connection from clients all at one
> site/coming in from one provider?
>
> > I guess it might be a version issue, 'ivsadm -v' yields:
> > ipvsadm v1.24 2003/06/07 (compiled with popt and IPVS
> > v1.2.0)
>
> do you have a matching ipvsadm/ip_vs pair?
>
> Joe
>
> --
> Joseph Mack NA3T EME(B,D), FM05lw North Carolina
> jmack (at) wm7d (dot) net - azimuthal equidistant map
> generator at http://www.wm7d.net/azproj.shtml
> Homepage http://www.austintek.com/ It's GNU/Linux!
>
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