[Distutils] short circuiting module lookups

[Marius Gedminas]

On Wed, Apr 08, 2009 at 08:18:41AM -0400, Tres Seaver wrote:
> Noah Gift wrote:
> > On Wed, Apr 8, 2009 at 7:44 PM, Marius Gedminas <marius at pov.lt> wrote:
> >> On Tue, Apr 07, 2009 at 02:23:50PM -0400, Jim Fulton wrote:
> >>> My experience on Linux is that installing eggs as Zip files slows
> >>> imports.
> >> Was that in the presence of NFS?
> > 
> > yes.
> 
> Jim's report, which matches my experience, is not related to NFS:
> multiple, zipped bdist_eggs are slower to import / use thant the same
> eggs unzipped.

Right, and I was wondering whether the presence of NFS changes that or
not.  (It's plausible -- if every file access requires a network
roundtrip, maybe accessing one big file is faster than accessing many
small files.  I'm afraid I've exposed my total ignorance of NFS here ;)

> I think the "zip is faster" meme comes from the case of a single
> monolithic zip archive (e.g., the whole stdlib, or all the Zope eggs,
> in one file).

Yes, good point.

Marius Gedminas
-- 
I code in vi because I don't want to learn another OS. :)
                -- Robert Love
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: Digital signature
URL: <http://mail.python.org/pipermail/distutils-sig/attachments/20090408/dc5d3a4c/attachment-0001.pgp>