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--- software:valgrind [2008/11/18 14:45]
cyril created
+++ software:valgrind [2013/09/19 16:40] (current)
@@ Line 1: / Line 1: @@
 ====== Valgrind ======
-===== Cheat sheet =====
+===== General options =====
+Syntax: **''valgrind [options] <your-program> <args>''**
-  * **''valgrind <your-program> <args>''** : memory checker
+  * **''--db-attach=yes''** : to automatically attach gdb on errors
-  * **''valgrind --db-attach=yes <your-program> <args>''** : to automatically attach gdb on errors
+  * **''--error-limit=no''** : to display all errors even if there are a lot of them
-  * **''valgrind --leak-check=full <program> <args>''** : to completely analyse memory leaks
+  * **''--num-callers=50''** : to increase the maximum backtrace displayed
-  * **''valgrind --tool=massif --time-unit=B <program> <args>'' + ''ms_print massif.<pid>''** : statistics about which functions are using memory
-  * **''valgrind --tool=callgrind <program-compiled-O2> <args>'' + ''kcachegrind callgrind.out.xxxx'' + ''calgrind_control''** : call profiling
+===== Tools =====
-  * **''valgrind --tool=cachegrind <program-compiled-O2> <args>''** : CPU cache profiling in order to find cache misses
+==== Memcheck ====
+Memory checker (default tool).
+Syntax: **''valgrind [--tool=memcheck] [options] <your-program> <args>''**
+  * **''--leak-check=full''** : to completely analyse memory leaks
+  * **''--show-reachable=yes''**: to show the detail of reachable memory
+  * **''--track-origins=yes''** : to display where was allocated the "uninitialized value"
+==== Massif ====
+Memory profiling.
+Syntax: **''valgrind --tool=massif [options] <your-program> <args> ; ms_print massif.<pid>''**
+  * **''--time-unit=B''** : display results in bytes
+==== Callgrind ====
+Performance profiling, to find time taken in functions and number of calls of functions.
+Syntax: **''valgrind --tool=callgrind <program-compiled-O2> <args> ; kcachegrind callgrind.out.xxxx ; calgrind_control''**
+==== Cachegrind ====
+CPU cache profiling, to find cache misses.
+Syntax: **''valgrind --tool=cachegrind <program-compiled-O2> <args>''**
 Always do profiling with optimization options of compiler, or you could optimize things that the compiler already automatically does.