Re: extcap slowing down start of WS

[Michal Labedzki <michal.labedzki () tieto com>]

I use Wireshark will all extcaps expect ssh-based (there is no libssh 0.6
for Ubuntu 12.04) and I think my Wireshark starts in 2s (to see interface
list) - demon of speed (splash seems to be not required, but it is fine).
What time Wireshark spends for extcaps? It is not matter with startup time
like my.

Maybe there is need to add measurement debug logs for extcap (and
libpcap!), to see how many time it spends in particular tool/lib and show
summary. Extcap may take longest time for some users (for example usage of
thousands of extcap tools for some reasons). There is also a problem to
ensure which scenario takes longest time: 1. all extcaps + all possible
interfaces available [works fast for me]
2. all extcap but no interfaces available (reason like: there is ADB daemon
on different port, but there is no androiddump interfaces by default -
timeout for connecting for non-existence TCP port seems to be not constant
for all platform - however androiddump is fast in this case for Windows
[but I see that tree times only])

On 3 January 2017 at 18:07, Pascal Quantin <pascal.quantin () gmail com> wrote:

> Hi Anders,
>
> 2017-01-03 17:56 GMT+01:00 Anders Broman <anders.broman () ericsson com>:
>
> > Hi,
> >
> > It now seems like extcap_register_preferences is the thing taking the
> > longest time when starting up Wireshark, at least on Window.
> >
> > Any one care to take a look?
>
> Presumably this is because for each extcap utility present in the extcap
> folder, Wireshark will launch it to retrieve the preferences supported and
> their default values. I'm not sure we can easily win time here (but I will
> let extcap experts comment).
> That's one of the reasons why I put the extcap utilities as optional in
> Windows installer.
>
> Pascal.
>
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Pozdrawiam / Best regards
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Michał Łabędzki, Software Engineer
Tieto Corporation

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