Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
???
10/17/06 03:12
Read: times


 		 #126553 - Be sure to measure what's important
Responding to: ???'s previous message
In case it isn't obvious, there are other considerations besides just the average CPU utilization that everyone seems to be talking about. For example, suppose that some particular section of your program absolutely must, without fail, execute in 50 microseconds or less. If it actually takes 49, then you're right on the edge of not having enough horsepower, even though the CPU may on the average be idle for 99% of the time.

So Yu, can you describe the system that you want to measure? Can you explain to us why you want to meaasure the CPU usage? Are you sure the average usage is what you really care about? You need to make sure you're measuring what is important in your system.

-- Russ


List of 43 messages in thread
TopicAuthorDate
How to calculate CPU usage?            01/01/70 00:00      
   Generally            01/01/70 00:00      
      multicore '52?            01/01/70 00:00      
   Keil Tools            01/01/70 00:00      
   With what tools ?            01/01/70 00:00      
      Always 100.0%            01/01/70 00:00      
      Or            01/01/70 00:00      
         LED?            01/01/70 00:00      
            A way, Not the Way            01/01/70 00:00      
               spelling and syntax, just as an aside            01/01/70 00:00      
                  Thanks guys.            01/01/70 00:00      
                     What would that tell you?!            01/01/70 00:00      
                        100% is not always 100%            01/01/70 00:00      
                           Idle Not Idle            01/01/70 00:00      
                              We can not see your code            01/01/70 00:00      
                                 60% is not arbitrary            01/01/70 00:00      
                              Run a co-operative tasker!            01/01/70 00:00      
                                 he is doing the right thing, why lead him astray            01/01/70 00:00      
                              WHY            01/01/70 00:00      
                     then this is off-topic            01/01/70 00:00      
                        This isn't the Keil forum, so why ?            01/01/70 00:00      
                  My spelling sucks            01/01/70 00:00      
   Be sure to measure what's important            01/01/70 00:00      
      Good point            01/01/70 00:00      
         ISRs            01/01/70 00:00      
         Protocol?            01/01/70 00:00      
            adding a word            01/01/70 00:00      
            Checksums are not spackle            01/01/70 00:00      
         Try this            01/01/70 00:00      
            clarification            01/01/70 00:00      
               Delay.            01/01/70 00:00      
               Thanks            01/01/70 00:00      
            I'll try this!            01/01/70 00:00      
               Now try this!            01/01/70 00:00      
                  It still qualifies as simple ...            01/01/70 00:00      
                  Stepping inside ISR            01/01/70 00:00      
                     Essential things ...            01/01/70 00:00      
                  it still applies            01/01/70 00:00      
         re; control task            01/01/70 00:00      
            an added word            01/01/70 00:00      
            Buffered UART ?            01/01/70 00:00      
               there is a reason            01/01/70 00:00      
   Done!            01/01/70 00:00      

Back to Subject List