From: Brian Le Roy <brian@...>
Date: 2005-09-09T01:02:19+09:00
Subject: Re: general performance question

I am doing some database queries using the MySQL-Ruby library, not DBI. 
  I disabled logging, so it's not IO.  Are there any differences between 
MySQL-Ruby and DBI?



Robert Klemme wrote:
> Brian Le Roy wrote:
> 
>>I'm running top and when I run my app - I see the user CPU
>>utilitization hit ~70%, but the ruby process only shows about 3%.  Is
>>this observation indicative of inefficient code?
> 
> 
> Hm, might be that the rest of the 70% are spent in the kernel (doing IO
> probably).  Do you do a lot IO?  Or do you start another process (or
> multiple processes) from your Ruby script?  Did you have an eye on your
> disk LED?  I'm not too familiar with top but I think I remember that it
> sometimes spits out odd values - might be another explanation.
> 
> 
>> And to be complete,
>>the user CPU utilization drops to 0% when I stop the app - so it's me.
> 
> 
> Guilty!!! :-)
> 
> Kind regards
> 
>     robert
> 
> 
>