Wireshark mailing list archives

Re: Maximum file size?


From: "Joel Seidman" <joel2009 () fastmail us>
Date: Tue, 27 Oct 2009 21:40:35 -0700

Hi, Jaap.

Thank you for the referral to CACE. I downloaded their demo version
today, and we are very impressed by it! It looks extremely helpful
(although we didn't budget for it!). I haven't yet tested it with any
humongous files, but I'm hopeful.

-- Joel

On Tue, 27 Oct 2009 11:43 +0100, "Jaap Keuter" <jaap.keuter () xs4all nl>
wrote:
Hi,

Like Anders says, there are multiple factors, of which #2 is usually the
most common cause of hitting the memory barrier.

The purpose is to use
Wireshark's analytical capabilities to process a very large set of data
in
toto.)

CACE Technologies [1] understood this requirement and created Pilot for
that. 
Have a look at "Enhance Wireshark" on the Wireshark website.

Thanx,
Jaap

[1] CACE Technologies is the host for open source Wireshark and
commercial
advanced capture tools.


On Tue, 27 Oct 2009 08:25:08 +0100, "Anders Broman"
<anders.broman () ericsson com> wrote:
Hi,
There is separate issues here:
1) The largest file pointer possible to use e.g. physical file size.
2) The amount of memory used by Wireshark when analyzing a file/trace.

2 depends on the protocols in the trace and on preference settings in
Wireshark, reassembly
Uses memory conversation tracking does to etc.

A lot of work has been put into the trunk version of Wireshark to try to
reduce the amount of memory used,
fix memory leaks etc and also to speed up loading of the file.
Development
snapshot 1.3.1 is due to be released soon or you could try a development
build.

Note that with large files filtering and other operations may becom slow
so you want to keep your files as small as possible.

Regards
Anders

-----Original Message-----
From: wireshark-users-bounces () wireshark org
[mailto:wireshark-users-bounces () wireshark org] On Behalf Of Joel Seidman
Sent: den 27 oktober 2009 06:21
To: wireshark-users () wireshark org
Subject: [Wireshark-users] Maximum file size?

Hi All.

I want to know the maximum capture file size (if there is one) that can
be
loaded into 64-bit wireshark. I can't seem to find a definitive answer. 

I recently installed V 1.2.2 (SVN Rev. 29910) on a Vista computer (with
a
substantial amount of RAM). I selected the 64-bit version when I
downloaded
it. I believe the required Service Pack was installed also (need to
confirm).

I eventually expect to have a capture file of several hundred MB or
more.
I haven't actually had a problem loading a large file in 64-bit wire
shark
(did with 32-bit version), but I did an experiment that may be related.
 I
have a capture file of 143 Meg. I loaded it, which went OK. Then I
attempted to load it again in concatenation mode, and got an error box:
"This application has requested the Runtime to terminate in an unusual
way.
Please contact the application support team for more information...".

So my question is, basically, what's the max? And whatever the answer,
is
it possible to increase it by re-building from source? Any other
suggestions?

(I have read suggestions to break a large file up into smaller pieces,
but
I'd like to avoid that step if it's possible. The purpose is to use
Wireshark's analytical capabilities to process a very large set of data
in
toto.)

TIA.

-- Joel


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  Joel Seidman
  joel2009 () fastmail us

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