Can you provide some additional detail on your setup? I'm interested in
whether you have WINS going, browse list synchronization between subnets
etc. Or is it simply a static drive mapping? Are you working from a
mapped drive or network neighbourhood?
Or perhaps Windows boxes aren't involved at all?
I've seen this problem myself and have never completely solved it. I do
believe there is a connection to the use of WINS and browse list
synchronization however...
Brock
> -----Original Message-----
> From: users-admin_at_lists.freeswan.org
> [mailto:users-admin_at_lists.freeswan.org] On Behalf Of Jake Harris
> Sent: April 29, 2002 12:07 PM
> To: users_at_freeswan.org
> Subject: [Users] Slow Transfers Seen
>
>
> Hello,
>
> I'm having a problem here that I was wondering if the fine
> people here at Freeswan could help diagnose. I am currently
> sending a 1.7 MB file between two machines on subnets fronted
> by Freeswan boxes. When I send the file directly from one
> machine to another without the boxes, it takes 4-5 secs. When
> I send it to the box on the incoming side (just testing the
> routing only), it takes 5-6 secs. However, when I do it fully
> between the two subnets on an encrypted tunnel, it can take
> 12-20 secs to send. Needless to say, this is not really
> encouraging for our performance checks.
>
> When I look at one of the gateways, it's not CPU-bound
> according to either top or vmstat when sending the message.
> It also is not network-bound since everything is on a 10-Mbit
> switch. There is obviously a gating factor on the receiving
> side even when I send the message unencrypted, but this would
> not be responsible for the doubling in transmission times I'm seeing.
>
> Sending multiple copies in parallel takes proportionally
> longer, suggesting it is not an issue of latency (more like
> bandwith). More interestingly, when I send the message to two
> different subnets each on a different tunnel, it takes around
> the same time for both in parallel, further suggesting it's
> not an issue of CPU or network gating.
>
> Both machines are Dell rackmount boxes with Dual Pentium IIIs
> and Intel Epro 100 cards in them. I am willing to gather any
> statistics or diagnostics that might help, but I am currently
> quite befuddled about what is going on here. Does anybody
> think they can help? Thanks.
>
> Yours,
> Jake
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