tried it with clang? takes 0.05s here.
-
-
-
What CPU? What OS?
- 3 more replies
New conversation -
-
-
Root cause found (by
@sevenps) and fixed, thanks!Thanks. Twitter will use this to make your timeline better. UndoUndo
-
-
-
This is visible on Ubuntu 16.04
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
-
-
The question is why it is not insanely slow on both. You're mixing VEX-encoded instructions with non-VEX, huge perf penalty.
-
And therein lies the answer: with dynamic linking, upper AVX registers are not 0, whereas with static they are.
- 4 more replies
New conversation -
-
-
How much time is spent before main in ld.so vs in main itself?
-
This should be statistically insignificant. The loop is in main(), and the process in run only once.
- 1 more reply
New conversation -
-
-
try perf record?
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
-
-
this makes no sense.
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.