Hi there,
I am puzzled at how I borked my installation. Python loads slow on my machine, and I decided to use strace and /usr/bin/time to see what is actually happening. # sync && echo 3 > /proc/sys/vm/drop_caches $ /usr/bin/time python2 -c "" 0.19user 0.04system 0:01.22elapsed 19%CPU (0avgtext+0avgdata 4200maxresident)k 7312inputs+0outputs (4major+1145minor)pagefaults 0swaps And when all is in memory: $ /usr/bin/time python2 -c "" 0.19user 0.01system 0:00.21elapsed 98%CPU (0avgtext+0avgdata 4216maxresident)k 0inputs+0outputs (0major+1153minor)pagefaults 0swaps $ /usr/bin/time python2 -c "import argparse" 0.36user 0.02system 0:00.39elapsed 98%CPU (0avgtext+0avgdata 5752maxresident)k 0inputs+0outputs (0major+1699minor)pagefaults 0swaps .2 and .4 seconds to not even get started when all disk I/O is cached. So what is happening here? $ strace -c python2 -c "" % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 93.26 0.001910 8 230 168 open 3.66 0.000075 9 8 mprotect 3.08 0.000063 1 97 fstat64 0.00 0.000000 0 172 read 0.00 0.000000 0 63 close <...> $ strace -c python2 -c "import argparse" % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 51.89 0.003732 13 290 read 47.29 0.003401 18 192 155 stat64 0.82 0.000059 0 129 mmap2 0.00 0.000000 0 549 443 open 0.00 0.000000 0 107 close <...> What puzzles me, is the amount of errors for open and stat64. There are references to stuff I don't know (~/GNUStep directory? Stuff under site-packages that does not exist? Subdirs of site-packages that are not included in sys.path?) What is python doing there, and why? And, more importantly, how can this be corrected? Probably irrelevant, but Python2 version 2.7.3, Archlinux (current as of previous weekend). Thanks, Joep -- http://mail.python.org/mailman/listinfo/python-list
