On Tue, Oct 1, 2019 at 3:31 AM Tobiah <t...@tobiah.org> wrote: > > On 9/30/19 9:54 AM, Chris Angelico wrote: > > On Tue, Oct 1, 2019 at 1:56 AM Tobiah <t...@tobiah.org> wrote: > >> > >> I don't have a lot of information, so here goes a shot in > >> the dark. One day I started experiencing a delay when > >> starting python. I'm on Ubuntu 16.04. It takes three > >> seconds to get a prompt when I type 'python' on the command > >> line (Python 2.7.12). When I run a script that imports > >> packages, it takes longer, up to 17 seconds just to do > >> the imports. Python3 is not affected, and is snappy as > >> expected. > >> > >> That's all I know. I'm hoping someone else has seen this. > >> I'm about ready to wipe the drive and upgrade to 18.04. > >> > > > > Python 2 and Python 3 have completely independent installations, so it > > could be a lot of things. First question: Does it take three seconds > > *every* time you type 'python', or only the first time? If it's slow > > the first time but then fast, it's probably just a matter of disk > > caching; running Python 3 doesn't pre-cache the files for Python 2, so > > you have to pay the load-time cost anew. > > > > If it's slow every time, though, you may have something messing with > > your startup. Try "python -S" and "python -E" see if they're just as > > slow. That would be a way to delve into things a bit. > > > > ChrisA > > > It was much faster with -S and instantaneous with -E. I had a directory > in my PYTHONPATH that I mount with sshfs from a server. For some reason > that mount is very slow. Thanks for helping me figure this out. >
Cool! That would be it, then - every import had to go through that SSH tunnel. Happy to help out. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
