Wireshark mailing list archives

Re: Idea for faster dissection on second pas


From: Jakub Zawadzki <darkjames-ws () darkjames pl>
Date: Sun, 13 Oct 2013 00:31:44 +0200

On Sat, Oct 12, 2013 at 05:08:04PM -0400, Evan Huus wrote:
On Sat, Oct 12, 2013 at 12:29 PM, Evan Huus <eapache () gmail com> wrote:
Now I'm wondering how much of this could be alleviated somehow by a more
efficient tree representation...

The answer is apparently lots :)

We've already had similar benchmark result done, while removing emem slabs:
  http://www.wireshark.org/lists/wireshark-dev/201303/msg00101.html
  http://www.wireshark.org/lists/wireshark-dev/201303/msg00105.html

I tweaked some things in r52568, r52569 and r52573 that had a fairly
substantial improvement when dissecting with a tree. "tshark -V" is as
much as 18% faster in my tests, and filtering should improve a little
as well, though that is much harder to measure.

Still good we regain this performance (and even better tree free now is O(1)),
even if tshark -V might be not normal use case. Thanks.

Cheers,
Kuba.
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