Personal blog of Yzmir Ramirez

Today’s episode is all about Valgrind – from the pro’s to the con’s, from the why to the how! This episode will be of interest to anyone who is or wants to work with Valgrind on a regular or semi-regular basis.

1. Pro’s/Why
2. Con’s
3. How
   1. Using the latest version
      sudo [yum/apt-get] install valgrind
      #OR#
      sudo [yum/apt-get] remove valgrind
      sudo [yum/apt-get] install bzip2 glibc*
      wget http://valgrind.org/downloads/valgrind-3.10.1.tar.bz2
      tar -xf valgrind-3.10.1.tar.bz2; cd valgrind-3.10.1
      ./configure; make; sudo make install
      valgrind –version # This should now read 3.10.1
   2. VGDB (cd ./mysql-test)
      ./lib/v1/mysql-test-run.pl –start-and-exit –valgrind –valgrind-option=”–leak-check=yes”
      –valgrind-option=”–vgdb=yes” –valgrind-option=”–vgdb-error=0″ 1st
      #OR# valgrind –leak-check=yes –vgdb=yes –vgdb-error=0 ./mysqld –options…
      #ALSO CONSIDER# –num-callers=40 –show-reachable=yes –track-origins=yes
      gdb /Percona-server/bin/mysqld
      (gdb) target remote | vgdb
      (gdb) bt
   3. pquery Valgrind
   4. Valgrind stacks overview & analysis

Full-screen viewing @ 720p resolution recommended.

The post MySQL QA Episode 11: Valgrind Testing: Pro’s, Con’s, Why and How appeared first on Percona Data Performance Blog.