Are you using rvm? Check to make sure your 'rails' script is using the correct 
rvm rails version. Mine wasn't, and I needed to change line 1 to:

#!/usr/bin/env ruby

That fixed a slow start-up problem I was having, which may or may not be 
related.

M

On 2/06/2010, at 1:11 PM, nahum wrote:

> so anyway.  doing a 'bundle lock' doesn't seem to have fixed things
> for me.  I've googled and found others complaining about ~30 second
> startup times and dev mode being just really really slow in general
> with rails3 + 1.9.x  No fixes though, just people complaining.
> 
> It wasn't always like this, only recently did it suddenly start
> happening so I'm thinking I may have updated a gem or something and
> that's caused my problems.  Still looking into it...
> 
> I guess that's what you get for living on the edge :-)
> 
> --nahum
> 
> On May 26, 12:46 pm, nahum <[email protected]> wrote:
>> yeah, that's the one.  doesn't look to have been updated since Nov
>> '08.
>> 
>> --nahum
>> 
>> On May 26, 12:23 pm, Shane Mingins <[email protected]> wrote:
>> 
>> 
>> 
>>> You mean the one you posted a while back?
>> 
>>> This speeds up for dev (and possibly test) environment by being
>> 
>>>> clever.
>> 
>>>> http://blog.pastie.org/2008/11/rails-dev-mode-performance-plugin.html
>> 
>>>> Nahum.
>> 
>>> On Wed, May 26, 2010 at 9:47 AM, nahum <[email protected]> wrote:
>>>> It has made a difference, and Jeremy's comment is what I would guess
>>>> too without looking at the code.    Given the whole 'convention over
>>>> configuration' thing I would expect that by default bundler would
>>>> cache gems and not reload them on each request because not everyone is
>>>> a gem developer.
>> 
>>>> It's still pretty slow on my laptop in dev mode - if I turn on class
>>>> caching it ramps up massively, as you'd expect.
>> 
>>>> A while ago someone posted a link to a plugin which speeds up dev mode
>>>> by only reloading files/class/controllers/views/etc if the underlying
>>>> file changed.  It had some problems but was a fantastic concept.  I
>>>> can't seem to re-find it, does anyone have a link to it?  Anyone using
>>>> it?
>> 
>>>> --nahum
>> 
>>>> On May 24, 10:45 am, Jeremy Olliver <[email protected]> wrote:
>>>>> I'd expect it's something along the lines of reloading the gems each
>>> request
>>>>> if the bundle isn't locked. Similar to how classes (models, controllers
>>> etc)
>>>>> aren't cached and are reloaded between each request in dev mode.
>> 
>>>>> On 24 May 2010 09:59, Richard Hulse <[email protected]> wrote:
>> 
>>>>>> Why would this make a difference? (Just as a matter of interest, and
>>>>>> too lazy to go read the code).
>> 
>>>>>> On Mon, May 24, 2010 at 9:11 AM, Eaden McKee <[email protected]> wrote:
>>>>>>> Hi there,
>> 
>>>>>>>> It's probably my configuration, but just wondering if anyone else
>>>>>>>> using Rails3 + Postgres is finding it incredibly slow in dev mode.
>>>>>>>> It's fast in production though. :-)
>> 
>>>>>>> Are you locking the bundle? This speeds things up heaps.
>> 
>>>>>>> Best Regards
>>>>>>> Eaden McKee
>> 
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>>> <wellrailed%2bunsubscr...@googlegrou ps.com>>> > .
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>>> <wellrailed%2bunsubscr...@googlegrou ps.com>>> > .
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>>>>> --
>>>>> Jeremy Olliver
>>>>> Developer
>>>>> Heaps!
>>>>> More out of life
>> 
>>>>> --
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>>> --
>>> Shane Mingins
> 
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