I'm working on a plugin for the Moaning Goat Meter to show the CPU load for solaris. Since I don't know how to extract the CPU load directly (if it is actually possible to do so) I'm using mpstat. The output from mpstat looks like this: 




As you can see, there is no indication of when a sample is finished, only the header for the next sample (one second later).  I don't seem to have the source for mpstat, and anyway it's not good to require people to recompile their system utilities with a version you provide.


At the current moment, I'm reading it in like this:

while (1){
$_=<CPUSTAT>;
last if /CPU/;
push @tmp, $_;
}

[download]






Could someone recommend a better way?  This lacks a little style, and is also always 1 second behind.  Note that I can't just count the CPUs the first time around because on a Sun, they can change while the program is running.



____________________

Jeremy

I didn't believe in evil until I dated it. 
 


In reply to Nicer way of reading system monitor's output
by jepri





Title:




Use:  <p> text here (a paragraph) </p>

and:  <code> code here </code>

to format your post, it's "PerlMonks-approved HTML": 











 
 



  •  Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data! 
    • 

  •  Titles consisting of a single word are discouraged, and in most cases are disallowed outright. 
    • 


  • 
  Read Where should I post X? if you're not absolutely sure you're posting in the right place.

    • 


  • 
  Please read these before you post! —

    • 


  • 
  Posts may use any of the Perl Monks Approved HTML tags: 
  
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
    

    • 






  • 
  You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

  
    
  
    
           
     For: 
       
     Use: 
  
    
  
     &  &amp; 
    
  
     <   &lt;  
    
  
     >   &gt;  
    
  
     [  &#91; 
    
  
     ]  &#93; 
    
  
    


    • 

  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
    • 

  • 
  See Writeup Formatting Tips and other pages linked from there for more info.

    •