Shared filesystems of any sort are too slow for most application development purposes, especially if you've got a process like NPM on one of the sides trying to

Shared filesystems of any sort are too slow for most application development purposes, especially if you've got a process like NPM on one of the sides trying to read and write 2.5gb of Javascript files. We saw a 30% speedup in one of our apps by switching from NFS to two-way syncing between "native" filesystems using Unison. See mitchellh's blog post on the subject: http://mitchellh.com/comparing-filesystem-performance-in-virtual-machines http://mitchellh.com/comparing-filesystem-performance-in-vir...