Ethereal-dev: RE: [Ethereal-dev] Need Urgent Help - Maintenance of Tethereal state information
Do you care about overlap of capture data? If not, you could probably
start the new capture 10 seconds prior to to stopping the old capture.
-- Nathan
------------------------------------------------------------
Nathan Neulinger EMail: nneul@xxxxxxx
University of Missouri - Rolla Phone: (573) 341-4841
Computing Services Fax: (573) 341-4216
> -----Original Message-----
> From: Amit Vashisht [mailto:amitv@xxxxxxxxxxxxxx]
> Sent: Friday, February 21, 2003 3:23 AM
> To: ethereal-dev@xxxxxxxxxxxx
> Subject: [Ethereal-dev] Need Urgent Help - Maintenance of
> Tethereal state information
>
>
> Hi,
>
> It appears that tethereal/ethereal maintains state
> information ( in some
> specific circumstances ) as per an earlier message of the mailing list
> (http://www.ethereal.com/lists/ethereal-users/200211/msg00022.html).
>
> I quote Ronnie Sahlberg
> ">>>>> .... The state in question is the stuff ethereal
> remembers internally
> about every packet it sees, information such as when the
> packet was received,
> size of it,
>
> >>>>> .... every packet will still add to the state buildup
> inside ethereal
>
> until you reach a point where memory is exhausted.I.e.
> ethereal will become
> slower and slower as memory is exhausted on the system.
>
> >>>>>>.... Stoping and restarting the capture is an efficient
> method to
>
> control the amount of state buildup. "
>
> In our usage scenario , the packets need to be captured for
> long durations of
> time at a stretch ( maybe months , may even be years ) and
> therefore memory
> exhaustion may not be acceptable ,
> 1. Is it possible to CLEANUP the STATE INFORMATION when
> switching between
> capture files in the ringbuffer ?
> 2. If yes , Which function calls can be made to cleanup such state
> information ?
> 3. Stopping and restarting capture as suggested above would
> not be viable as
> that may involve the undesirable missing of a few packets .
> Is there any
> other possible technique to cleanup the state information ?
>
> Thanks ,
> Amit Vashisht
>
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