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Re: Memory consumption in tshark
From: Joerg Mayer <jmayer () loplof de>
Date: Tue, 27 Aug 2013 23:01:15 +0200

On Tue, Aug 27, 2013 at 04:38:08PM -0400, Evan Huus wrote:
We already discard a great deal of state in (single-pass) tshark that we
keep around in Wireshark (or two-pass tshark). We do need to keep some,
though. It's only a bug if we're keeping more than we actually need, and
that's not determinable from the information we have here. Dario, if you
could get us a memory profile of tshark in this situation (through
valgrind's massif tool, for example) that would help us debug further.

I dislike the idea of two-pass by default for exactly this reason: people
expect tshark to be relatively state-less. This is already not the case,
but it's a lot worse in two-pass mode. It might even make sense to add a
--state-less flag to tshark that disables all options which require state.
I don't know how feasible that would be however.

IIRC, two-pass allows for most/all of the reassembly/request-response stuff,
which we want to do sometimes. Any ideas why we have to keep some information


Joerg Mayer                                           <jmayer () loplof de>
We are stuck with technology when what we really want is just stuff that
works. Some say that should read Microsoft instead of technology.
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