[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 #9 from youenn fablet <youennf at gmail.com> ---
(In reply to comment #8)
> 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

Do EWS bots need the full git history? What about --depth=1?

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