Can we try to isolate how long it takes to start the interactive ipython shell? (your lib example is pure python only).
Here are two runs, alternating between them to get some statistical sampling. Notice, the entire difference is one little "i"! ~/build$ time sage -python -c "import sage.all; sage.all.factor(2018)" real 0m4.133s user 0m3.796s sys 0m0.296s ~/build$ time sage -ipython -c "import sage.all; sage.all.factor(2018)" Out[1]: 2 * 1009 real 0m5.460s user 0m4.840s sys 0m0.372s ~/build$ time sage -python -c "import sage.all; sage.all.factor(2018)" real 0m4.132s user 0m3.688s sys 0m0.320s ~/build$ time sage -ipython -c "import sage.all; sage.all.factor(2018)" Out[1]: 2 * 1009 real 0m5.374s user 0m4.780s sys 0m0.344s ~/build$ time sage -python -c "import sage.all; sage.all.factor(2018)" real 0m4.228s user 0m3.836s sys 0m0.332s ~/build$ time sage -ipython -c "import sage.all; sage.all.factor(2018)" Out[1]: 2 * 1009 real 0m5.419s user 0m4.804s sys 0m0.368s -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
