  Modern architectures rely on memory fences to prevent undesired weakenings of
memory consistency. As the fences' semantics may be subtle, the automation of
their placement is highly desirable. But precise methods for restoring
consistency do not scale to deployed systems code. We choose to trade some
precision for genuine scalability: our technique is suitable for large code
bases. We implement it in our new musketeer tool, and detail experiments on
more than 350 executables of packages found in Debian Linux 7.1, e.g. memcached
(about 10000 LoC).
