Dear Filip... > If you wanted to measure the response time (the time between input > and the first response by process, not necessarily the first output) > how would you do it? Hopefully Ive defined resonse time correctly. > Would this be the first context switch or first interrupt thats > triggered, or is it the time it takes for a process to respond to an > interupt? You mean, something like this scenario? An user start vi. You want to measure the time how fast Vi response keypress (let's say character "a"), from the time it is pressed right until it is showed on Vi display? If yes, you are measuring --> interrupt acknowledgment + bottom halves execution time + putting back Vi process to run queue + Vi re scheduling More detailed information on what you want to achieve would be helpful for us.... regards Mulyadi -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
