> > I still don't see why you'd get different timings between Eclipse and > Ant if you're running with the same VM -- it should be pretty > consistent (either it caches dns lookups or it doesn't). >
I agree, it's suspicious. I searched for URL performance differences between eclipse and Ant and hit this page: http://ant.apache.org/manual/proxy.html. It suggests Ant uses different proxy settings by default for its own tasks as well as 3rd party tasks that use java.net.URL. I tried running with -autoproxy but from Ant each test method still takes ~23s vs Eclipse which is ~0.1s. Will be interesting to identify the differences .. I think it's a configuration issue, as Eclipse needs to make URL connections for e.g. its marketplace, so maybe it comes pre-configured somehow. I'm now curious, I'll dig :). Shai On Sat, Sep 14, 2013 at 12:33 AM, Chris Hostetter <hossman_luc...@fucit.org>wrote: > > : If you want to experiment, a really trivial test is below -- on my > system, > : there is a ~5 second gap between each pair of "INIT" and "H1" timestamps, > : but no other odd gaps in subsequent timestamps -- suggesting no caching > of > : DNS per hostname, but that the URL class doesn't "re-lookup" on > subsequent > : hashCode() calls. > > Or maybe i could actually cut & paste the test this time... > > > import java.net.URL; > import org.apache.lucene.util.LuceneTestCase; > public class TestURLDNSAbsurdity extends LuceneTestCase { > > public void testHowSlowCanYouGo() throws Exception { > go("1"); > go("2"); > } > public void go(String s) throws Exception { > System.out.println(s + " PRE: " + System.currentTimeMillis()); > URL url = new URL("http://example.com/";); > System.out.println(s + "INIT: " + System.currentTimeMillis()); > int h1 = url.hashCode(); > System.out.println(s + " H1: " + System.currentTimeMillis()); > int h2 = url.hashCode(); > System.out.println(s + " H2: " + System.currentTimeMillis()); > boolean e1 = url.equals(this); > System.out.println(s + " E1: " + System.currentTimeMillis()); > boolean e2 = url.equals(this); > System.out.println(s + " E2: " + System.currentTimeMillis()); > assertEquals(h1,h2); > assertEquals(e1,e2); > } > } > > ... > > [junit4] Started J0 PID(31843@frisbee). > [junit4] Suite: org.apache.solr.util.TestURLDNSAbsurdity > [junit4] 1> 1 PRE: 1379107971313 > [junit4] 1> 1INIT: 1379107971314 > [junit4] 1> 1 H1: 1379107976449 > [junit4] 1> 1 H2: 1379107976449 > [junit4] 1> 1 E1: 1379107976449 > [junit4] 1> 1 E2: 1379107976449 > [junit4] 1> 2 PRE: 1379107976450 > [junit4] 1> 2INIT: 1379107976450 > [junit4] 1> 2 H1: 1379107981510 > [junit4] 1> 2 H2: 1379107981510 > [junit4] 1> 2 E1: 1379107981510 > [junit4] 1> 2 E2: 1379107981510 > [junit4] OK 10.3s | TestURLDNSAbsurdity.testHowSlowCanYouGo > > > > > -Hoss > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org > For additional commands, e-mail: dev-h...@lucene.apache.org > >
