[hibernate-commits] Hibernate SVN: r14019 - sandbox/trunk/jdbc-proxy/src/test/perf/org/hibernate/jdbc.
Author: steve.ebersole(a)jboss.com
Date: 2007-09-21 12:26:29 -0400 (Fri, 21 Sep 2007)
New Revision: 14019
Modified:
sandbox/trunk/jdbc-proxy/src/test/perf/org/hibernate/jdbc/PerformanceTest.java
Log:
more robust forced gc to better isolate runs
Modified: sandbox/trunk/jdbc-proxy/src/test/perf/org/hibernate/jdbc/PerformanceTest.java
===================================================================
---
sandbox/trunk/jdbc-proxy/src/test/perf/org/hibernate/jdbc/PerformanceTest.java 2007-09-21
16:24:13 UTC (rev 14018)
+++
sandbox/trunk/jdbc-proxy/src/test/perf/org/hibernate/jdbc/PerformanceTest.java 2007-09-21
16:26:29 UTC (rev 14019)
@@ -15,6 +15,7 @@
*/
package org.hibernate.jdbc;
+import java.lang.ref.WeakReference;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
@@ -126,11 +127,8 @@
}
}
- System.gc();
- System.gc();
+ // prime
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~p~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- // prime
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
for ( int a = 0, Z = datums.length; a < Z; a++ ) {
process( datums[a], 1 );
}
@@ -157,6 +155,15 @@
System.out.println(
"-----------------------------------------------------------------------------------"
);
}
+ private void doGC() throws Throwable {
+ WeakReference dumb = new WeakReference( new Object() );
+ System.gc();
+ System.gc();
+ while ( dumb.get() != null) {
+ Thread.sleep( 500 );
+ }
+ }
+
private ProcessResult average(ProcessResult[][] results, int extrapolation) {
long jdbcAvg = 0, proxyAvg = 0, delegAvg = 0;
// the first dimension is the object counts...
@@ -205,6 +212,8 @@
LogicalConnectionImpl lc;
long start;
+ doGC();
+
start = System.currentTimeMillis();
c = services.getConnectionProvider().getConnection();
for ( int i = 0; i < statementCount; i++ ) {
@@ -213,6 +222,8 @@
services.getConnectionProvider().closeConnection( c );
long jdbc = System.currentTimeMillis() - start;
+ doGC();
+
start = System.currentTimeMillis();
lc = new LogicalConnectionImpl( null, ConnectionReleaseMode.AFTER_TRANSACTION, services
);
c = ProxyBuilder.buildConnection( lc );
@@ -223,6 +234,8 @@
lc.close();
long proxy = System.currentTimeMillis() - start;
+ doGC();
+
start = System.currentTimeMillis();
lc = new LogicalConnectionImpl( null, ConnectionReleaseMode.AFTER_TRANSACTION, services
);
c = new ConnectionDelegate( lc );