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SOLR-1242: Human readable JVM info from system handler does integer cutoff rounding, even when dealing with GB. Fixed to round to one decimal place. 

git-svn-id: https://svn.apache.org/repos/asf/lucene/solr/trunk@788392 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Mark Robert Miller 2009-06-25 15:28:53 +00:00
parent e7c97672d0
commit 613685ac6f
2 changed files with 36 additions and 8 deletions
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3
CHANGES.txt
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@ -422,6 +422,9 @@ Bug Fixes
49. SOLR-1207: equals method should compare this and other of DocList in DocSetBase (koji)
50. SOLR-1242: Human readable JVM info from system handler does integer cutoff rounding, even when dealing
with GB. Fixed to round to one decimal place. (Jay Hill, Mark Miller)
Other Changes
----------------------

39
src/java/org/apache/solr/handler/admin/SystemInfoHandler.java
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@ -26,9 +26,9 @@ import java.lang.management.OperatingSystemMXBean;
import java.lang.management.RuntimeMXBean;
import java.lang.reflect.Method;
import java.net.InetAddress;
import java.text.DecimalFormat;
import java.util.Date;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.apache.lucene.LucenePackage;
import org.apache.solr.common.util.NamedList;
@ -192,14 +192,15 @@ public class SystemInfoHandler extends RequestHandlerBase
jvm.add( "processors", runtime.availableProcessors() );
long used = runtime.totalMemory() - runtime.freeMemory();
int percentUsed = (int)(((double)(used)/(double)runtime.maxMemory())*100);
// not thread safe, but could be thread local
DecimalFormat df = new DecimalFormat("#.#");
double percentUsed = ((double)(used)/(double)runtime.maxMemory())*100;
SimpleOrderedMap<Object> mem = new SimpleOrderedMap<Object>();
mem.add( "free", FileUtils.byteCountToDisplaySize( runtime.freeMemory() ) );
mem.add( "total", FileUtils.byteCountToDisplaySize( runtime.totalMemory() ) );
mem.add( "max", FileUtils.byteCountToDisplaySize( runtime.maxMemory() ) );
mem.add( "used", FileUtils.byteCountToDisplaySize( used ) + " (%"+percentUsed+")");
mem.add("free", humanReadableUnits(runtime.freeMemory(), df));
mem.add("total", humanReadableUnits(runtime.totalMemory(), df));
mem.add("max", humanReadableUnits(runtime.maxMemory(), df));
mem.add("used", humanReadableUnits(used, df) + " (%" + df.format(percentUsed) + ")");
jvm.add("memory", mem);
// JMX properties -- probably should be moved to a different handler
@ -292,6 +293,30 @@ public class SystemInfoHandler extends RequestHandlerBase
public String getSource() {
return "$URL$";
}
private static final long ONE_KB = 1024;
private static final long ONE_MB = ONE_KB * ONE_KB;
private static final long ONE_GB = ONE_KB * ONE_MB;
/**
* Return good default units based on byte size.
*/
private static String humanReadableUnits(long bytes, DecimalFormat df) {
String newSizeAndUnits;
if (bytes / ONE_GB > 0) {
newSizeAndUnits = String.valueOf(df.format((float)bytes / ONE_GB)) + " GB";
} else if (bytes / ONE_MB > 0) {
newSizeAndUnits = String.valueOf(df.format((float)bytes / ONE_MB)) + " MB";
} else if (bytes / ONE_KB > 0) {
newSizeAndUnits = String.valueOf(df.format((float)bytes / ONE_KB)) + " KB";
} else {
newSizeAndUnits = String.valueOf(bytes) + " bytes";
}
return newSizeAndUnits;
}
}