Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > The "is it in sync with gettimeofday()" is interesting too, even if > the answer is that you don't expect it to be _perfectly_ in sync. A > test that just reports maximum slop might be an interesting test, and > could show real problems (maybe bad network time synchronization, but > maybe actual bugs in our internal xtime handling even for local > filesystems!). I wonder if multi-cpu systems might show interesting differences between CPUs too. I would hope not since xtime is based on a global variable. > And then if your tool starts reporting times that are off by seconds > or minutes, people might say "Hey, that's not right.." and find > something. More likely never see it as the output is hidden away by xfstests. Probably xfstests needs to gain some way of lending prominence to information of this type. David
