See what a program does before deciding whether you really want it to happen.

When starting a program with libremotec, you need a server somewhere (can be the same machine for testing) - it will listen on port 12345. Run server part there. Then start your own application with the right LD_PRELOAD and other configuration options.

3,000 syscalls a second, on an idle machine? That doesn't seem right.

rr is a lightweight tool for recording and replaying execution of applications (trees of processes and threads). More information about the project, including instructions on how to install, run, and build rr, is at http://rr-project.org.

This article is an attempt to sum up a small number of generic rules that appear to be useful rules of thumb when creating high performing programs. It is structured by first establishing some fundamental causes of performance hits followed by their extensions.

How does a system call is handle in the linux kernel ?

syscall list in x64