[Webkit-unassigned] [Bug 142400] [buildbot] clean-build script should remove untracked files and revert local changes too

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=142400

--- Comment #8 from Csaba Osztrogonác <ossy at webkit.org> ---
Just to have some statistics, how fast/slow are svn and git

Cloning from official Apple servers:
-------------------------------------
$ time git clone git://git.webkit.org/WebKit.git
real    28m41.117s ---> 5.4x slower than svn
user    27m23.484s ---> 20.5x more consumed CPU time than svn
sys     2m14.190s  ---> 3.2x more consumed kernel time than svn

$ time svn checkout http://svn.webkit.org/repository/webkit/trunk WebKit
real    5m4.963s
user    1m20.516s
sys     0m42.239s

Cloning from our internal mirrors:
-----------------------------------
$ time git clone git://<our-internal-git-mirror>
real    11m52.672s ---> 6.9x slower than svn
user    26m45.524s ---> 25.1x more consumed CPU time than svn
sys     2m10.426s  ---> 3.6x more consumed kernel time than svn

$ time svn checkout svn://<our-internal-svn-mirror>/webkit/trunk WebKit
real    1m43.370s
user    1m4.520s
sys     0m36.122s

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