Check out timestamp-counter. You can reach the processor speed with that. To the best of my knowledge it is the lowest possible normally. A nice description is available in the book - LINUX DEVICE DRIVERS by Rubini. -Pradeep On Tue, 12 Mar 2002, Joerg Eggink wrote: > > > >Of course, there are plenty of other ways. If anyone can recommend > >another one, I look forward to read... > > Thanks for the help. > Now I use do_gettimeofday(struct timeval *) and I write a little function > which calculates the different of two values. > > > -----Original Message----- > > From: kernelnewbies-bounce@nl.linux.org > > [mailto:kernelnewbies-bounce@nl.linux.org] On Behalf Of Joerg Eggink > > Sent: Monday, March 11, 2002 4:27 PM > > To: kernelnewbies@nl.linux.org > > Subject: time measurements > > > > > > Hello all > > > > How can i make time measurements smaller than 1 milliseconds in a kernel > > > > module. > > > > I try it with the jiffies value but I get always the same output value > > because the time is to short. > > But I'm not sure what jiffies is. Is it time in seconds, milliseconds or > > time > > ticks or something else ? > > > > Thanks for your help in advance > > > > Regards > > > > Jörg > > > -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
