[vbox-dev] [PATCH] Performance improvement of vboxsf

[tatuya karino]

Hello,

I investigated cause of the low performance of the find command in the
shared folder on a Linux guest.
I created a patch that returns the correct d_type in
file_operations.iterator.
With this fix, `find /path/to/shared` gets significant performance
improvement.
I tested this code in a Windows 7 and Mac OS X Yosemite hosts.

This patch is provided under the MIT license.

// before applying this patch
vagrant at debian-jessie:/vagrant/large-dir$ time find . > /dev/null

real  0m10.422s
user  0m0.060s
sys 0m5.068s

// after applying this patch
vagrant at debian-jessie:/vagrant/large-dir$ time find . > /dev/null

real  0m1.885s
user  0m0.036s
sys 0m0.644s


-- 
Tatsuya Karino
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