Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> writes: > tasklist_lock is aboue the hottest lock there is in all of the kernel. Do you know code paths you see tasklist_lock being hot? I am looking at some of the exec/signal/ptrace code paths because they get subtle corner case wrong like a threaded exec deadlocking when straced. If the performance problems are in the same neighbourhood I might be able to fix those problems while I am in the code. Eric