Baobab hangs for an abnormal while while processing deep tree

[John Drinkwater]

I happen to have a full archive of playstation home on my hdd (as one does), and here is an example of the file tree: https://gist.github.com/johndrinkwater/f1c84501430e5d35a4af
It causes baobab to take many many many minutes to process, making the application appear hung, while it seems to be allocating more memory, but in such small increments that is absorbing most of the time:

From an strace of the process, while it has stopped spinning the processing spinner:
brk(0x3dd8000) = 0x3dd8000
brk(0x3df9000) = 0x3df9000
brk(0x3e1a000) = 0x3e1a000
brk(0x3e3b000) = 0x3e3b000
brk(0x3e5c000) = 0x3e5c000
brk(0x3e7d000) = 0x3e7d000

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: baobab 3.16.1-1ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-27.32-generic 4.2.8-ckt1
Uname: Linux 4.2.0-27-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: GNOME-Flashback:Unity
Date: Tue Feb 2 14:35:55 2016
ExecutablePath: /usr/bin/baobab
InstallationDate: Installed on 2015-06-05 (241 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
ProcEnviron:
 XDG_RUNTIME_DIR=<set>
 SHELL=/bin/bash
 LANGUAGE=en_GB:en
 PATH=(custom, user)
 LANG=en_GB.UTF-8
SourcePackage: baobab
UpgradeStatus: Upgraded to wily on 2016-02-02 (0 days ago)

[John Drinkwater (johndrinkwater)]

> UpgradeStatus: Upgraded to wily on 2016-02-02 (0 days ago)

This was an issue on 15.04, but wanted to report with a more recent build