[freenet-cvs] r15221 - trunk/freenet/src/freenet/node

[juiceman at freenetproject.org]

Author: juiceman
Date: 2007-09-21 01:40:05 +0000 (Fri, 21 Sep 2007)
New Revision: 15221

Modified:
   trunk/freenet/src/freenet/node/Node.java
Log:
Increase JE DB read buffer block size from 2K to 6K to virtually eliminate nRepeatFaultReads see
http://www.oracle.com/technology/products/berkeley-db/faq/je_faq.html#39
and
http://www.oracle.com/technology/documentation/berkeley-db/je/java/com/sleepycat/je/EnvironmentStats.html#getNRepeatFaultReads()

Shouldn't materially affect total memory usage but may give a slight read performance increase.


Modified: trunk/freenet/src/freenet/node/Node.java
===================================================================
--- trunk/freenet/src/freenet/node/Node.java	2007-09-21 00:18:40 UTC (rev 15220)
+++ trunk/freenet/src/freenet/node/Node.java	2007-09-21 01:40:05 UTC (rev 15221)
@@ -948,6 +948,7 @@
 		envConfig.setTxnWriteNoSync(true);
 		envConfig.setLockTimeout(600*1000*1000); // should be long enough even for severely overloaded nodes!
 		// Note that the above is in *MICRO*seconds.
+		envConfig.setConfigParam("je.log.faultReadSize", "6144");
 		
 		File dbDir = new File(storeDir, "database-"+getDarknetPortNumber());
 		dbDir.mkdirs();