Wireshark-dev: Re: [Wireshark-dev] improvement to "Save as ..."
From: Stephen Fisher <[email protected]>
Date: Tue, 19 Dec 2006 12:39:10 -0800
On Wed, Dec 13, 2006 at 10:16:03PM +0100, Toralf F?rster wrote:

> I sniffed ~ 45000 packets and got 56 MB in a tmp file. I stopped 
> wireshark and made a "Save as ...". After specifying a file name I saw 
> a popup window like "Loading ..." for some time before the operation 
> (it's only a rename ?) finished. Does wireshark loads the tmp file in 
> the "Save As ..." routine again ? That would not be neccessary, or ?

I'm not very familiar with the saving routines, but after a quick glance 
it appears to attempt renaming / copying the temp file as it is if 
possible.  On Windows, it will do a copy.  On Unix, it will attempt a 
rename if it is on the same file system and if not, do a copy.  It does 
run a routine to process all of the packets under certain circumstances, 
such as saving only a range of packets.  The action happens in file.c: 
cf_save().  Are you on Windows?  Were you saving the whole capture file?  
Does this slow reprocessing happen every time you work with a large 
capture file and save it?