title: Limit CPU load or set process prority
body: <p>It's not the first time I get a too much cpu load warning from my hosting. The code is just some random php script with mysql queries, nothing fancy. (THe tables are nothing extraordinary, a few hundred lines maximum and I always limit them if requested.</p>
  
  <p>I don't mind if it runs for 0.15 second instead of 0.05, so is there a way I can control process priority or limit cpu load?</p>
  
  <p>Thanks!</p>