On Sun, Jun 24, 2012 at 12:58 PM, David Roe <roed.m...@gmail.com> wrote: > > >> > * eliminate Sage startup time per-file, which drops the time to run all >> > tests >> > dramatically, especially on OS X. >> >> Why especially on OS X? > > > Maybe I'm wrong, but I thought the startup time per file was higher on OS > X. It was just a vague recollection though: I haven't done tests. > David
I think OS X is by default slower than Linux at the (like 100,000 stupid) filesystem calls that Sage does every time it starts up. With my OS X 10.7.4 laptop, which has a very fast SSD, I get the following repeatedly: blastoff:~ wstein$ time sage < /dev/null ---------------------------------------------------------------------- | Sage Version 5.0, Release Date: 2012-05-14 | | Type notebook() for the GUI, and license() for information. | ---------------------------------------------------------------------- sage: Exiting Sage (CPU time 0m0.01s, Wall time 0m0.01s). real 0m1.526s user 0m1.064s sys 0m0.504s On exactly the same laptop using a Linux Virtualbox virtual machine I get this repeatedly: sagews@sagewsworker:~$ time sage </dev/null ---------------------------------------------------------------------- | Sage Version 5.0.1, Release Date: 2012-06-10 | | Type notebook() for the GUI, and license() for information. | ---------------------------------------------------------------------- sage: Exiting Sage (CPU time 0m0.02s, Wall time 0m0.02s). real 0m0.992s user 0m0.784s sys 0m0.212s I don't know if there are filesystem or OS parameters in OS X that one could change that would speed things up. William -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
