Recently, I want to profile the linux user lock(pthread mutex/rwlock) performance of a project, and there are few options for this purpose:
Finally, I selected the mutrace due to:
- valgrind(drd): It’s really slow, cannot provide credible information.
- systemtap(futexes.stp): It’s really great in profiling kernel, but the user layer profile need to additional efforts to setup the environment(some debuginfo pkg).
- lttng: There is only rpm pkg available on RHEL7, have to compile by myself. And there are more than one dependency lib, hard to fix the dependency issue.
- mutrace: There is no rpm pkg available on RHEL6, have to compile by myself, and fortunately it’s not very hard to pass the compilation.
To get it done, need a few steps:
- Get the source code
git clone git://git.0pointer.net/mutrace.git
- Modify the autoconf required version from 2.68 to 2.63
diff --git a/configure.ac b/configure.ac index fcb1397..0d36e41 100644 --- a/configure.ac +++ b/configure.ac @@ -18,7 +18,7 @@ # You should have received a copy of the GNU Lesser General Public # License along with mutrace. If not, see <http://www.gnu.org/licenses/>. -AC_PREREQ([2.68]) +AC_PREREQ([2.63]) AC_INIT([mutrace], [0.2], [mzzhgenpr (at) 0pointer (dot) net]) AC_CONFIG_SRCDIR([mutrace.c])
- Upgrade gcc version to at least gcc 4.6
Do some code changes for backtrace-symbols.c to pass the compilation
diff --git a/backtrace-symbols.c b/backtrace-symbols.c index 0a0d751..6f84c56 100644 --- a/backtrace-symbols.c +++ b/backtrace-symbols.c @@ -34,6 +34,8 @@ along with this program; if not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include "config.h" + #define fatal(a, b) exit(1) #define bfd_fatal(a) exit(1) #define bfd_nonfatal(a) exit(1) @@ -44,13 +46,13 @@ #define true 1 #define false 0 -#define _GNU_SOURCE +//#define _GNU_SOURCE #include <string.h> #include <stdio.h> #include <stdlib.h> #include <execinfo.h> #include <bfd.h> -#include <libiberty.h> +//#include <libiberty.h> #include <dlfcn.h> #include <link.h> #if 0
- Run ./bootstrap.sh to generate Makefile
- Change ‘-O0’ to ‘-O2’ from CFLAGS in the Makefile
- Run make and make install
In the end
Now, mutrace, matrace and the other related libraries have been generated, profile your program by:
mutrace -r $test_app ...
And big thanks to the original author @Lennart Poettering
have a fun 🙂