Hi Tyler, According to the pieces of code you put in this message, I'm assuming you are programming in a C-like language: C or C++, it does not matter, or just little. Am I right? So, here we go. The lines of C code are extracted from a library I made to do this, but for logging purposes. The time measurement function I'm using is a low-precision one, measuring time at a millisecond roundtrip or so. On top of the logger module, I need the following line: #include <sys/time.h> This header contains the "timeval" data structure definition and the "gettimeofday()" system call definition I'm using then. Then, I need two data structures of type "timeval". struct timeval prev, now; /* time of day with low precision, (expressed in s+µs but rounded to ms) */ int val; /* used to compute a number of milliseconds */ In linux, your instruction "prev=gettime()" reads as: gettimeofday(&prev, NULL); then, you would have myfunction(); as you did in your code. Then, gettimeofday(&now, NULL); val = (now.tv_sec-prev.tv_sec)*1000 /* whole seconds if any multiplied by 1000 to get ms */ + (int)((now.tv_usec-prev.tv_usec)/1000); /* number of µs from which I compute integer division by 1000 to get ms */ and finally printf("It took you %d milliseconds",val); Apart from syntax errors I did not check since my linux box is off right now. For more info, please have a look to man gettimeofday HTH. Have a nice day. Chris D -----Original Message----- From: programmingblind-bounce@xxxxxxxxxxxxx [mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Littlefield, Tyler Sent: mardi 8 février 2011 16:57 To: programmingblind@xxxxxxxxxxxxx Subject: timing functions and chunks of code in *nix? Hello all, I know windows exposes high-resolution timers to do this sorta thing, but I'm curious how I could do the same in Linux? Is there something that will give me timing in ms? so: prev = gettime(); myfunc(); now = gettime(); printf("you spent %d ms.\n", prev-now); -- Thanks, Ty __________ View the list's information and change your settings at //www.freelists.org/list/programmingblind