From: Peter Booth <pbooth@...>
Date: 2009-02-02T12:54:52+09:00
Subject: Re: Ruby on Solaris 10 performance problems

On 2009-01-30 18:14:23 -0500, Robert Klemme <shortcutter@googlemail.com> said:

> 2009/1/30 Colin Mackenzie <colmac@gmail.com>:
>> Thanks Peter and Robert for all your insights about his subject. This
>> whole thing came to light when I took one of our web based applications
>> which is a Terminal management System and was going to port it to
>> Solaris system which happen to be a RISC platform. It was originally
>> written on a Ubuntu platform using an intel CPU and was going to be
>> ported to Red Hat Linux Enterprise on a Dell Blade system. Then
>> management changed and wanted it on Solaris. Long story there. When we
>> finally got it running it was discovered it took 5 seconds to load a
>> simple login page!
> 
> That sounds extremely long.  I'd dig into that issue. Do you have
> database indexes in place etc.?  I also believe that Rails has some
> options that you can switch off because they are convenient during
> development but slow down production.
> 
>> It is a Ruby on Rails application and I found it was
>> during a simple request to a controller to build a very simple page. The
>> process used arrays to do "certain" things during the process of
>> building the page.
> 
> Talk about vague information... :-)
> 
>> Hence, my simple ruby program to test. I simply cant
>> see any reason to re-architect the application so it will run on a RISC
>> platform. So in the end I am going to push for the original plan and put
>> this on a blade system of some type. Thanks again and yeah I am old
>> enough to remember those 50 floppies of Slackware except I was a
>> Yggdrasil fan :)
> 
> You either have a configuration issue or your app is slower than
> necessary on *any* platform. I'd say if you want scalability from this
> I would dig into the performance issue.
> 
> Cheers
> 
> robert



I'd second Robert's comment. If your web app takes 5 seconds to build a 
page on the SUn box and 500msec on the Intel box then it is slow on 
both. I have found that New Relic does a great job of drilling into the 
Rails side of problems, whilst pagetest, 
http://performance.webpagetest.org:8080/  does the same at the