2 ms·

This allows developers to see what their programs are doing in more detail. They can then use that information to optimize their code.

• tocomment 14y ago
  There's nothing similar in older linuxes?
  • deweerdt 14y ago
    There is, strace does just that. perf trace is still evolving though and appears promising. See, for example, scripting support: http://lwn.net/Articles/371448/ http://lwn.net/Articles/371448/
  • jiggy2011 14y ago
    You can already see system calls with strace.