Hi Tuom. It's the limit of number of operations while compiling. It can be (globally) edited using:
pypy --jit trace_limit=some-number default is 6000. --jit help will show you some information. We should improve the heuristic to always trace a function that's the only one maybe though On Tue, Oct 6, 2015 at 7:32 PM, Tuom Larsen <tuom.lar...@gmail.com> wrote: > Hello! > > I have a piece of auto-generated code and I noticed that if a function > has more than certain number of expressions it starts to run much > slower. > > I'm guessing this has something to do with what JIT considers to be > still worth of compiling but I just would like to confirm this: is > there any limit on how big (in term of operations) a function needs to > be in order to get compiled by JIT? Is it possible to increase the > limit from user code? Or is there any other reason for the slowdown? > > Please find below an arficial example. Here it turn in ~0.13 seconds > but when I uncomment the first line it drops to 5.3 seconds. > > Thanks, > > Tuom Larsen > > def f(x): > a0 = x*0.1; a1 = x*0.1; a2 = x*0.2; a3 = x*0.3; a4 = x*0.4 > a5 = x*0.5; a6 = x*0.6; a7 = x*0.7; a8 = x*0.8; a9 = x*0.9 > b0 = x*0.1; b1 = x*0.1; b2 = x*0.2; b3 = x*0.3; b4 = x*0.4 > b5 = x*0.5; b6 = x*0.6; b7 = x*0.7; b8 = x*0.8; b9 = x*0.9 > return sum([ > # (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9), > (a0+a1+a2+a3+a4+a5+a6+a7+a8+a9)*(b0+b1+b2+b3+b4+b5+b6+b7+b8+b9)]) > > for i in range(100000): > f(0.1) > _______________________________________________ > pypy-dev mailing list > pypy-dev@python.org > https://mail.python.org/mailman/listinfo/pypy-dev _______________________________________________ pypy-dev mailing list pypy-dev@python.org https://mail.python.org/mailman/listinfo/pypy-dev
