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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
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