Re: Severe UI degradation in 1.10.5

[Evan Huus <eapache () gmail com>]

Try processing the capture with tshark of both versions and seeing if
1.10.5 takes substantially longer than 1.10.4. If so then you are
correct that it is a dissector issue. Please file a bug on our
bugzilla (https://bugs.wireshark.org/bugzilla/) and, if possible,
attach a subset of the capture that shows the issue. If you're feeling
ambitious you could try profiling the 1.10.5 build (using the
callgrind tool, for example) to see exactly where the time is going.
You may also want to try a trunk build (from
https://www.wireshark.org/download/automated/) to see if this issue
also exists in the latest trunk.

Cheers,
Evan

On Tue, Jan 14, 2014 at 9:53 AM, Stuart MacDonald
<stuartm.coding () gmail com> wrote:
> I upgraded to 1.10.5 a little while ago and noticed some severe UI issues. I
> downgraded to 1.10.4 last night, and this morning all seems to be well
> again, so it looks like a problem in 1.10.5.
>
> My use case is that I'm debugging an svn issue which involves running a
> lengthy capture (400k - 500k packets) of which about 80-90% are a single TCP
> connection between the svn client and server.
>
> In 1.10.5 the UI is no longer responsive.
>
> Scrolling during a live capture doesn't scroll. It scrolls a few packets and
> then sits and doesn't do any updating. Eventually it "catches up": long
> after the capture is stopped, it restarts scrolling and goes until it
> reaches the bottom of the packet list.
>
> I see similar behaviour when opening an existing capture: the processing
> dialog freezes at 10% say, something low, and sits there doing nothing for
> ages. Eventually it will finish but it takes a long time.
>
> Hitting the cancel button when either of these situations is occurring
> doesn't do anything immediately. Eventually it takes effect but it's minutes
> later.
>
> Exporting the packets, both the full buffer and just the followed TCP
> connection takes ages as well.
>
> I'm willing to test/run debug versions/etc.
>
> I just finished the test run with 1.10.4, and the performace is markedly
> better.
>
> I'm going to guess that a dissector is hogging the main thread, starving out
> the UI.
>
> ...Stu
>
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