ant-notifications mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Joshua Suereth (JIRA)" <>
Subject [jira] [Created] (IVY-1465) ModuleRules.getRule is O(n) leading to resolution slowness
Date Tue, 01 Apr 2014 19:48:14 GMT
Joshua Suereth created IVY-1465:

             Summary: ModuleRules.getRule is O(n) leading to resolution slowness
                 Key: IVY-1465
             Project: Ivy
          Issue Type: Bug
          Components: Core
    Affects Versions: 2.3.0
         Environment: OpenJDK 6,7, MacOSX + Ubuntu
            Reporter: Joshua Suereth
            Priority: Minor

So, for the sbt project we noticed significant resolution time improvements with the following

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.

This message was sent by Atlassian JIRA

View raw message