Ethereal-dev: Re: [Ethereal-dev] Question regarding performance

Note: This archive is from the project's previous web site, ethereal.com. This list is no longer active.

Date Index Thread Index Other Months All Mailing Lists
Date Prev Date Next Thread Prev Thread Next
From: Guy Harris <guy@xxxxxxxxxxxx>
Date: Fri, 5 Sep 2003 10:38:59 -0700
On Fri, Sep 05, 2003 at 11:34:09AM +0200, Michael Tuexen wrote:
> when I load a large .pcap file and after that I change the style of the
> time column from 'time since beginning of capture' to 'since last frame'
> the progress seems to be fast at the beginning and slows down towards 
> the end. Shouldn't the process be at a constant rate?

On what platform are you doing this, and what version of GTK+ do you
have installed?

One possible problem is that GTK+ isn't 1.2.8 or later (I think the
version was 1.2.8) - prior to 1.2.8 (or whatever the version was), it
appended to the list of elements in a GtkClist (the widget used to
display the packet list) by scanning to the end of the list and adding
there (the word "quadratic" comes to mind here...); I sent them a patch
to use the end-of-list pointer that was already present, turning
quadratic into linear, and I think it got into 1.2.8.

(Actually, that particular process should take a constant *time*, not
proceed at a constant *rate*, but to do that, I need to get the "virtual
clist" stuff working, and to do *that*, I need to get some other stuff,
such as support for reasonably fast random access to gzipped captures,
working....)