Wireshark-users: Re: [Wireshark-users] tshark or dumpcap ring buffer limitations
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From: Jaap Keuter <jaap.keuter@xxxxxxxxx>
Date: Wed, 19 May 2010 20:07:05 +0200
On 05/19/2010 07:38 PM, Joseph Laibach wrote:

All,

I’m running a continuous capture of data. I’m trying to use a ring
buffer of 25000 files with an 8mb file size. The problem is that the
ring buffer starts overwriting after 10000 files. I’ve tried it with
dumpcap and tshark. The command is using the –b files:25000 –b
filesize:8192. Is there a limitation to the size of the ring buffer for
dumpcap and/or tshark?

Thanks

Joe

- Wireshark V1.2.8

- Windows 2003 Server R2 64bit

- WinPcap v4.1.1



Hi,

That's a fixed limit:

jaap@host:~/src/wireshark/trunk$ grep RINGBUFFER_MAX_NUM_FILES *.h
ringbuffer.h:#define RINGBUFFER_MAX_NUM_FILES 10000

Thanks,
Jaap