Ethereal-dev: Re: [Ethereal-dev] [RFC] Combined dialogs for thedifferentconversations types

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From: "Ronnie Sahlberg" <ronnie_sahlberg@xxxxxxxxxxxxxx>
Date: Sun, 2 May 2004 19:54:04 +1000
From: "Olivier Biot"
Sent: Sunday, May 02, 2004 7:29 PM
Subject: Re: [Ethereal-dev] [RFC] Combined dialogs for
thedifferentconversations types


> Hi Ulf,
>
> That's yet another invaluably great addition!
>
> Do you think it's easy to present a framework in which it is easy to
> "plug in" those statistics? That way it'd be a piece of cake to add
> new statistics (currently only conversations, but maybe others will
> follow soon 8^)
>
> One question, though. In case you're working on rather large capture
> files, then it'd be probably expensive to compute *all* statistics for
> a given type. In this case, I'd suggest we still present the
> individual statistics as they are available today, or maybe we can
> defer the computation of the Ethernet statistics until the end-user
> has clicked on this tab (implying that the first tab will always have
> its statistics computed, unless that tab is explanatory only)? . Maybe
> I am completely wrong here and the overhead is not significant; in
> that case we can get rid of this remark :)

I dont think the overhead to do all of them will be much larger than just do
one of them.
They essentially just do a hash table search to find the conversation and
then update some integer
counters.
I think this is insignificant compared to all the CPU needed to actually
dissect the packets.
(I could be wrong.)