Differences

This shows you the differences between two versions of the page.

--- programming:c-cpp-performance [2012/01/17 12:49]
cyril [Vectorialization]
+++ programming:c-cpp-performance [2013/09/19 16:40] (current)
@@ Line 121: / Line 121: @@
 ==== Other profilers ====
-sysprof and oprofile are other profiles which use a kernel module. Sysprof has even a GUI, and shows the time spent in all running functions and programs.
+sysprof and oprofile are other profilers which use a kernel module. Sysprof has even a GUI, and shows the time spent in all running functions and programs (system wide). If you want details about scheduling of the processes (which process was running when on which cpu), you can use trace-cmd and its front-end KernelShark.
 ==== Traps ====
@@ Line 240: / Line 240: @@
 #include <sys/time.h>
 struct timeval tv;
-struct timezone tz;
+gettimeofday(&tv,NULL);
-gettimeofday(&tv,&tz);
 unsigned microseconds = tv.tv_sec*1000000 + tv.tv_usec; // beware overflows