Pretty much.  If you want to get fancy you can make assumptions about the distribution of request arrival times and use the mean queue length of 6 to estimate the fraction of the time when the queue length drops to zero; you probably come out somewhere around 10% CPU idle time, so each request is taking 15 ms to process rather than 16.6 ms.<p>But cpu-time-per-request is definitely the number you want to pay attention to.  If you cut that by a factor of 2, you won&#x27;t decrease the load average from 6 to 3; you&#x27;ll decrease it from 6 to less than 1.