On 18 jan 2008, at 19.04, Phillip J. Eby wrote: > At 12:50 PM 1/18/2008 -0500, Jim Fulton wrote: >> >> Can you briefly explain or provide a link to something that explains >> the performance improvement? > > Fewer directories on sys.path = better import performance, compared > to individually putting a series of .egg directories on sys.path.
Hi again, and thanks for the quick and interesting responses. For me as a naive end user, the import performance is not critical on any system I run - my site-packages directories rarely contains more than five to ten packages, and have lots of CPU and I/O to use (I even believe frequently recurring stat():s are cached by the OS). I am, personally, more concerned with a packaging system being scalable to many different computer systems, where user-id:s and home directories do not match (and many user-id:s, indeed, do not have home directories), where there are tens of thousands of users, or where there are two or three separate installations of libraries and binaries and the modules need to use the right ones depending on which python interpreter is run. Being scalable to handle thousands of packages in site-packages is not on my personal list of priorities. It's all about which dimension you want the packaging system to be flexible in, I guess. My little vote goes to the "many users and strange systems" dimension. :-) But who knows - many CPAN installations actually _have_ hundreds of dependencies installed. And with a packaging system that makes it as easy to install Python packages, perhaps the same will happen for us. Regards, /Viktor _______________________________________________ Distutils-SIG maillist - Distutils-SIG@python.org http://mail.python.org/mailman/listinfo/distutils-sig
