Ruby on Rails

Hi Colin and all,

I had exactly the same here: 1GB RAM, Ubuntu, RVM with Ruby1.9 and
Rails - and it's terribly slow comparing with the elder Ruby and Rails
combo. Did you figured out anything?

Also how did you speed up your server running? I already use Thin
locally, and found it"s faster then Webrick, but still have to wait a
lot after loading. Any trick?

Thanks,
Zoli

On 2010 dec. 30, 20:32, Conrad Taylor <conra...@gmail.com> wrote:
> On Thu, Dec 30, 2010 at 7:59 AM, Colin Law <clan...@googlemail.com> wrote:
> > On 29 December 2010 23:18, Conrad Taylor <conra...@gmail.com> wrote:
> > > ...
> > > Colin, do you have a sample application?  Next, it really depends
> > > on your overall system and Rails app configuration.  For example,
> > > if you don't have enough RAM, your system move data from memory
> > > to the disk and vice-versa.  This is a huge performance hit.  Can you
> > > provide more information?
>
> > I have 1GByte RAM and while running the test it shows less than half
> > used and the disk is not rattling.  The processor shows 100%
> > utilisation whilst the test is running, with rake being the process
> > using most of it.
>
> > I have tried making a new rails 3.0.3 app
> > rails new testruby
> > then using rvm to switch between 1.8.7 p302 and 1.9.2 p136
>
> > On each ruby I ran
> > time rake db:migrate
> > a couple of times to let the disk cache settle out then for 1.8.7 I got
> > real    0m2.111s
> > user    0m1.804s
> > sys     0m0.220s
>
> > and on 1.9.2
> > real    0m4.098s
> > user    0m3.512s
> > sys     0m0.424s
>
> > I also tried rake test and got, on 1.8.7
> > real    0m3.615s
> > user    0m3.104s
> > sys     0m0.316s
>
> > and on 1.9.2
> > real    0m6.487s
> > user    0m5.320s
> > sys     0m0.684s
>
> > It seems as if 1.9.2 takes about twice as long for some reason.
>
> > Colin
>
> Colin, do you have a test case that I can run locally?  Or can you
> tell me the specifics?  Next, I'm not sure that 1 GB RAM is sufficient
> because other resources outside the actual application uses the RAM.
> For example, on my slower machine, iMac, with 4 GB Ram, the RAM
> utilization for some common applications are as follows:
>
> Safari 5       ~554.0 MB
> Textmate      ~96.1 MB
> Terminal       ~14.0 MB
> Chrome        ~199.6 MB
> Firefox         ~128.2 MB
> and so on
>
> Note:  The above doesn't include any of the OS specific processes but
> you can see that this adds up.  Also, most modern OS will reserve RAM
> for its use that cannot be used by the end user.  Just something to keep
> in mind.
>
> Lastly, in regards to running spec, I tend to use Ruby Spork gem because
> anytime you do 'rake spec', the Rails framework needs to be loaded before
> the application specific code can be executed.  This is also true when
> running
> 'rake db:migrate'
>
> Good luck,
>
> -Conrad
>
>
>
>
>
>
>
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