Message263731
| Author | vstinner |
|---|---|
| Recipients | brett.cannon, lemburg, pitrou, r.david.murray, vstinner, yselivanov |
| Date | 2016-04-19.11:11:55 |
| SpamBayes Score | -1.0 |
| Marked as misclassified | Yes |
| Message-id | <CAMpsgwb7MMr=P0+fUCt9yhKF4SgGLjZXJhW_O-Sa19KZ4nsmCg@mail.gmail.com> |
| In-reply-to | <57160FF3.8090203@egenix.com> |
| Content | |
|---|---|
> Could you perhaps check what's causing these slowdowns ?
It's obvious, no? My patch causes the slowdown.
On a timeit microbenchmark, I don't see such slowdown. That's also why
I suspect that pybench is unstable.
python3.6 -m timeit '{}' says 105 ns with and without the patch.
python3.6 -m timeit 'd={}; d[1]=1; d[2]=2; d[3]=3; d[4]=4; d[5]=5;
d[6]=6; d[7]=7; d[8]=8; d[9]=9; d[10]=10' says 838 ns with and without
the patch.
I have to "cheat": I run timeit enough times until I see the "minimum". |
|
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2016-04-19 11:11:55 | vstinner | set | recipients: + vstinner, lemburg, brett.cannon, pitrou, r.david.murray, yselivanov |
| 2016-04-19 11:11:55 | vstinner | link | issue26058 messages |
| 2016-04-19 11:11:55 | vstinner | create | |