On Fri, 26 Feb 2016 11:02:41 -0700 jd1008 <jd1008@xxxxxxxxx> wrote: > > > On 02/26/2016 10:44 AM, Tom Horsley wrote: > > On Fri, 26 Feb 2016 09:51:24 -0600 > > Ranjan Maitra wrote: > > > >> How does this happen? The number of operations are exactly the same (or should be). > > The number of operations in your program are the same, but > > your program is running on the same machine as the linux > > OS which has deamons running in the background, and may > > even be stopping to page in code your program needs, or grow > > pages as it allocates memory. Vast numbers of things > > affect timing. Even the stupid dynamic library load address > > randomization linux does can result in totally different > > cache hits in memory. The list goes on and on... > > > > Apart from linux, most motherboards these days have SMI > > interrupts happening behind everyone's back which leave > > missing chunks of time no one can account for. > Timings based on realtime clocks are not same as the per task > timers which are incremented only when the task is actually executing. Hi, I am not interested in realtime. I am interested in time spent by the processor in executing a set of operations (which can include memory allocation and deallocation) which have to do (only) with the operations being executed. Is this at all possible? Many thanks, Ranjan ____________________________________________________________ FREE ONLINE PHOTOSHARING - Share your photos online with your friends and family! Visit http://www.inbox.com/photosharing to find out more! -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
