LUA Comparative Times

[Paul Offord <Paul.Offord () advance7 com>]

Hi,

I recently measured some load and filter times with and without a LUA postdissector plugin called TRANSUM.  I tried 
three different scenarios:


*        No LUA - without any plugins other than those shipped as standard

*        Bypassed LUA - with TRANSUM but a preference set so that on entry to the postdissector immediately returns to 
Wireshark

*        LUA Enabled - with TRANSUM enabled

The test file was a 47MB pcapng file with mostly web traffic.  Almost all of the data packets would have been 
scrutinised by TRANSUM in some detail.

I timed loading the file and then filtering with the expresssion tcp.len>0.  The timings were:



No LUA

Bypassed LUA

LUA Enabled

Load of file

1.0s

2.5s

5.4s

Filter with tcp.len>0

1.7s

2.9s

5.2s


The thing that surprised me was the impact of just having the LUA loaded, even if it immediately returned to Wireshak 
(the Bypassed LUA scenario).

Not a problem - just an observation.

Best regards...Paul

Paul Offord FBCS CITP
Chief Technical Officer
Advance7

Phone:  01279 211 668
Mobile:  07764 931 431
Email:  paul.offord () advance7 com<mailto:paul.offord () advance7 com>
LinkedIn:  https://uk.linkedin.com/in/paulofford


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