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On Aug 8, 2008, at 5:41 PM, A.M. Kuchling wrote:
On Fri, Aug 08, 2008 at 04:58:07PM -0400, Barry Warsaw wrote:
recursive or a complicated graph. One experiment would be to
create a
list with, say, 100,000 random [EMAIL PROTECTED] addresses and
benchmark
how much time it takes to unpickle it. I'll try to do that tomorrow
on a real computer (not this laptop).
Hi Andrew, any results?
The simple test program I used is below. For a list with 89531
addresses, the config.pck file is 9248317 bytes = 8.9M. Doing ten
loads and then ten saves in a row, the average load time is 1.36sec
and the average save time is 4.5sec.
This is on a development server here at Matrix, which has two 1.1GHz
Intel CPUs and 2Gb of RAM; a respectable machine, but not what you'd
currently use for a server. So I think pickle really is pretty fast.
Of course, if you had your Mailman installation on a busy mail or
database server, all that I/O might kill you, but I think giving up on
the mtime caching is not completely unreasonable.
Thanks for the feedback Andrew.
I don't know if it's worth changing for 2.1; I think it's a rare
problem and the workarounds are now all in the archive. It's probably
worth changing for 2.2 (and is of course moot for 3.0), but it's still
probably not worth making it configurable. For 2.2, let's do the
right thing and if we can make it fast in the meantime, great!
- -Barry
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