New issue 2725: pypy on raspberry pi 2 slower than regular python version
https://bitbucket.org/pypy/pypy/issues/2725/pypy-on-raspberry-pi-2-slower-than-regular

flok420:

When running feeks (https://github.com/flok99/feeks a chess program, commit 
70528c31374fe2863c9aec24a2cfbd95e2f22888) on a raspberry pi 2, the pypy version 
is quite a bit slower than the regular python version:


```
#!shell

folkert@vardan ~/QueenBee/feeks-87 $ ./main.py
go movetime 5000
info depth 1 score cp 62 time 144 nodes 21 pv e2e4
info depth 2 score cp -33 time 533 nodes 69 pv e2e4 e7e6
info depth 3 score cp 117 time 3381 nodes 378 pv e2e3 e7e6
bestmove e2e3
^Cfolkert@vardan ~/QueenBee/feeks-87 $ pypy ./main.py
go movetime 5000
info depth 1 score cp 62 time 1270 nodes 21 pv e2e4
info depth 2 score cp -33 time 3590 nodes 69 pv e2e4 e7e6
bestmove e2e4

```

What you see here:
the regular version performs 378 nodes in 3381ms (111.8/s) while the pypy 
version performs 69 nodes in 3590ms (19.2/s).


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