What is “(program)” in Chrome debugger’s profiler?

What is “(program)” in the function column of the Chrome debugger?

(program) is Chrome itself, the root of the tree calling all other code...it's there because the jump from native code to JavaScript, resource loading, etc. has to start somewhere :)

You can see examples of the treeview in the Chrome developer tool docs.

I believe (program) is native code, not the root of the tree.

See this thread:

https://bugs.webkit.org/show_bug.cgi?id=88446

So, more like system calls than like main().

Apparently it includes idle time. Also, some profiling of (program) is available from chrome://profiler/