Done: https://issues.apache.org/jira/browse/IVY-1465


On Tue, Apr 1, 2014 at 3:40 PM, Josh Suereth <joshua.suer...@gmail.com>wrote:

> Can do.  I'll have to find a jira account.
>
>
> On Tue, Apr 1, 2014 at 3:36 PM, Maarten Coene <maarten_co...@yahoo.com>wrote:
>
>> Hi Josh,
>>
>> yes I think we can merge this in the 2.4.0 final release, but we'll have
>> to review a bit in more detail first.
>> However, could you create a JIRA issue containing a link to the patch?
>>
>> thanks!
>> Maarten
>>
>>
>>
>> ________________________________
>>  Van: Antoine Levy Lambert <anto...@gmx.de>
>> Aan: Ant Developers List <dev@ant.apache.org>
>> Verzonden: dinsdag 1 april 3:58 2014
>> Onderwerp: Re: Ivy performance fix
>>
>>
>> Hello Josh,
>>
>> thanks for contacting the Ant/Ivy community.
>>
>> I think we can work with pull requests on github, as long as we see
>> clearly the diffs with the code in the svn repository we should be fine.
>>
>> @Maarten, Nicolas, and others in the Ivy community, do you think we can
>> merge this before building the ivy 2.4.0 final ?
>>
>> Regards,
>>
>> Antoine
>>
>> On Mar 31, 2014, at 4:15 PM, Josh Suereth <joshua.suer...@gmail.com>
>> wrote:
>>
>> > So, for the sbt project we noticed significant resolution time
>> improvements
>> > with the following patch:
>> >
>> > https://github.com/sbt/ivy/pull/1
>> >
>> > The reasoning:
>> >
>> >
>> >   - A lot of artifacts being resolved use Maven's "dependencyManagement"
>> >   conventions
>> >   - Ivy appears to turn these into "exact matcher" rules
>> >   - A ton of resolution time is spent filtering through these rules
>> >   - The existing solution is O(n) for all overrides
>> >
>> >
>> > What the patch does:
>> >
>> >
>> >   - Creates a key'd store for all "exact matcher" rules
>> >   - When executing rules, ensure that we only traverse what we have to
>> >   (non-exact, exact specific to our key and "default").
>> >
>> >
>> > As I said, this represents a significant speed bump for sbt builds using
>> > Ivy.  All existing tests pass, and I think they cover this aspect of ivy
>> > pretty well, from what I could see.
>> >
>> > What's the best mechanism to submit this back?  Do you accept pull
>> requests
>> > on github?
>> >
>> > Thanks!
>> > - Josh Suereth
>> >  Tools Lead
>> >   Typesafe, Inc.
>>
>>
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