title: What does "garbage collection rate" mean, and what benefit it could provide?
body: <p>In analyzing Java GC behavior, some tools has the metric "garbage collection rate" (an example would be in figure 19. from <a href="http://www.ibm.com/developerworks/java/library/j-ibmtools2/#fig19" rel="noreferrer">http://www.ibm.com/developerworks/java/library/j-ibmtools2/#fig19</a>) of which the unit is MB/sec.</p>
  
  <p>It's a rarely metric compared to others, like GC utilization. It looks like representing how fast GC cleans up. But does it provide any benefit? Or how should it be best analyzed?</p>