On Jan 24, 2008 4:02 PM, John Carter <[EMAIL PROTECTED]> wrote: > in a simple scripting language), translates those instructions into C > code, compiles this C code, > and loads the resulting kernel module into a running Linux kernel > to perform the requested system
Wow. Nothing that I'd ever want to see on a production machine, regardless of load. I wonder if it can cleanly unload the module after use? Actually, I wonder if module unloading is fully supported yet at all ... > The language, which is described in a later section, is strictly > typed, declaration free, procedu‐ > ral, and inspired by awk. It allows source code points or events > in the kernel to be associated The whole "inspired by awk" stuff is one of my big beefs with Dtrace itself. An ugly language, with no assistance to make scripts easy to create. On the other hand, it's an extremely low system impact probe. I see plenty of scope for a compiled Dtrace language, and it sounds like a missed opportunity if SystemTap implements the worst part of Dtrace and combines it with a non-low-impact probe methodology. -jim
