LUCENE-1709: force benchmark tests to run sequentially and enable threadsPerProcessor as arg to ant (default to 1)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@932878 13f79535-47bb-0310-9956-ffa450edef68

lucene/CHANGES.txt

@@ -478,6 +478,12 @@ Build
 * LUCENE-2074: Regenerating StandardTokenizerImpl files now needs
   JFlex 1.5 (currently only available on SVN). (Uwe Schindler)
 
+* LUCENE-1709: Tests are now parallelized by default (except for benchmark). You
+  can force them to run sequentially by passing -Drunsequential=1 on the command
+  line. The number of threads that are spwaned per CPU defaults to '1'. If you 
+  wish to change that, you can run the tests with -DthreadsPerProcessor=[num].
+  (Robert Muir, Shai Erera) 
+
 Test Cases
 
 * LUCENE-2037 Allow Junit4 tests in our envrionment (Erick Erickson

lucene/common-build.xml

@@ -54,6 +54,7 @@
 
   <!-- default arguments to pass to JVM executing tests -->
   <property name="args" value=""/>
+  <property name="threadsPerProcessor" value="1" />
     
   <property name="javac.deprecation" value="off"/>
   <property name="javac.debug" value="on"/>
@@ -484,7 +485,7 @@
   </target>
 
   <target name="junit-parallel" unless="runsequential">
-    <parallel threadsPerProcessor="2">
+    <parallel threadsPerProcessor="${threadsPerProcessor}">
      <test-macro pattern="A"/>
      <test-macro pattern="B"/>
      <test-macro pattern="C"/>

lucene/contrib/benchmark/build.xml

@@ -8,6 +8,9 @@
     <import file="../contrib-build.xml"/>
     <property name="working.dir" location="work"/>
 
+    <!-- the tests have some parallel problems -->
+    <property name="runsequential" value="true"/>
+
     <contrib-uptodate name="highlighter" property="highlighter.uptodate" classpath.property="highlighter.jar"/>
     <contrib-uptodate name="icu" property="icu.uptodate" classpath.property="icu.jar"/>
     <!-- analyzers common needs a hack for the jar file: -->