# Autotest really slow to detect updates when sharing codebase with VM

**URL:** <https://www.ruby-forum.com/t/autotest-really-slow-to-detect-updates-when-sharing-codebase-with-vm/142111>\
**Category:** Rails\
**Created:** [July 3, 2008, 3:16pm UTC](https://www.ruby-forum.com/t/autotest-really-slow-to-detect-updates-when-sharing-codebase-with-vm/142111 "2008-07-03T15:16:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![DEfusion](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/e68b1a/32.png) [@DEfusion](https://www.ruby-forum.com/u/DEfusion)\
**Post date:** [July 3, 2008, 3:16pm UTC](https://www.ruby-forum.com/t/autotest-really-slow-to-detect-updates-when-sharing-codebase-with-vm/142111/1 "2008-07-03T15:16:30Z")

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Ok I have my dev environment setup like so:

Local machine (OS X) has the codebase and shares via NFS.  
VM (Ubuntu) runs the app, has everything setup and mounts the codebase  
from the NFS share on the Mac.

I use SSH to run stuff like autotest etc. on my VM and everything  
works fine.

However autotest is slow to detect file changes, I just did a couple  
of tests:

- saving file in textmate, time for autotest to detect change: 12s,  
5s, 8s, 8s
- touching file: 15s, 3s, 6s

It used to be almost instantaneous when I wasn’t sharing code like  
this, does anyone know of anything I can do to improve the time it  
takes autotest to pickup the changes?

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<div class="post-metadata">

**Author:** ![DEfusion](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/e68b1a/32.png) [@DEfusion](https://www.ruby-forum.com/u/DEfusion)\
**Post date:** [July 4, 2008, 1:31pm UTC](https://www.ruby-forum.com/t/autotest-really-slow-to-detect-updates-when-sharing-codebase-with-vm/142111/2 "2008-07-04T13:31:33Z")

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Well I changed my shares to use samba and it’s a lot better now, dunno  
if there is some sort of timeout with NFS that I needed to tweak. It  
was very annoying and made autotest pretty pointless.