diff -r 826eb936c9a8 -r 71e5cd5b29bc benchmarks/sieve/src/test/java/org/apidesign/benchmark/sieve/SieveTest.java
--- a/benchmarks/sieve/src/test/java/org/apidesign/benchmark/sieve/SieveTest.java	Sun Jan 24 12:08:45 2016 +0100
+++ b/benchmarks/sieve/src/test/java/org/apidesign/benchmark/sieve/SieveTest.java	Sun Jan 24 14:31:36 2016 +0100
@@ -40,7 +40,7 @@
     public int oneThousand() throws IOException {
         SieveTest sieve = new SieveTest();
         int now = time();
-        int res = sieve.compute(1000);
+        int res = sieve.compute(5000);
         int took = time() - now;
         log("oneThousand in " + took + " ms");
         return res;
@@ -54,5 +54,6 @@
     @JavaScriptBody(args = { "msg" }, body = "if (typeof console !== 'undefined') console.log(msg);")
     @Override
     protected void log(String msg) {
+        System.err.println(msg);
     }
 }