AfflictionNetworks/narya
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Use the fine grained timer (measure in microseconds rather than

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milliseconds) and same every 100th event instead of profiling every event.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@2951 542714f4-19e9-0310-aa3c-eee0fc999fb1
This commit is contained in:
Michael Bayne
2004-02-09 02:08:28 +00:00
parent 596f55e315
commit 1d97122a81
1 changed files with 21 additions and 32 deletions
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src/java/com/threerings/presents/server/PresentsDObjectMgr.java
+21 -32
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@@ -1,5 +1,5 @@
//
// $Id: PresentsDObjectMgr.java,v 1.37 2003/08/16 04:14:56 mdb Exp $
// $Id: PresentsDObjectMgr.java,v 1.38 2004/02/09 02:08:28 mdb Exp $
package com.threerings.presents.server;
@@ -8,6 +8,8 @@ import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import sun.misc.Perf;
import com.samskivert.util.HashIntMap;
import com.samskivert.util.Histogram;
import com.samskivert.util.Queue;
@@ -173,8 +175,8 @@ public class PresentsDObjectMgr
// pop the next unit off the queue
Object unit = _evqueue.get();
long start = 0L;
if (UNIT_PROFILING) {
start = System.currentTimeMillis();
if (_eventCount % UNIT_PROFILING_INTERVAL == 0) {
start = _timer.highResCounter();
}
// if this is a runnable, it's just an executable unit that
@@ -194,11 +196,14 @@ public class PresentsDObjectMgr
processEvent((DEvent)unit);
}
if (UNIT_PROFILING) {
long elapsed = System.currentTimeMillis() - start;
if (start != 0L) {
long elapsed = _timer.highResCounter() - start;
// convert the elapsed time to microseconds
elapsed = elapsed * 1000000 / _timer.highResFrequency();
// report excessively long units
if (elapsed > 500) {
if (elapsed > 500000) {
Log.warning("Unit '" + StringUtil.safeToString(unit) +
" [" + StringUtil.shortClassName(unit) +
"]' ran for " + elapsed + "ms.");
@@ -338,15 +343,10 @@ public class PresentsDObjectMgr
}
/**
* Dumps collected profiling information to the system log. Does
* nothing if unit profiling is not enabled.
* Dumps collected profiling information to the system log.
*/
public void dumpUnitProfiles ()
{
if (!UNIT_PROFILING) {
return;
}
Iterator iter = _profiles.keySet().iterator();
while (iter.hasNext()) {
String cname = (String)iter.next();
@@ -858,34 +858,20 @@ public class PresentsDObjectMgr
{
public void record (long start, long elapsed)
{
if (start - _lastRecorded > RECENT_INTERVAL) {
_recentElapsed = 0L;
_recentCount = 0;
}
_recentElapsed += elapsed;
_recentCount++;
_totalElapsed += elapsed;
_lastRecorded = start;
_histo.addValue((int)elapsed);
}
public String toString ()
{
int count = _histo.size();
return "r:" + _recentElapsed + " t:" + _totalElapsed +
" c:" + count + " ra:" + (_recentElapsed/_recentCount) +
" ta:" + (_totalElapsed/count) +
" h:" + StringUtil.toString(_histo.getBuckets());
return "(" + _totalElapsed + "us/" + count + " = " +
(_totalElapsed/count) + "us avg) " +
StringUtil.toString(_histo.getBuckets());
}
protected long _lastRecorded;
protected int _recentCount;
protected long _recentElapsed;
protected long _totalElapsed;
protected Histogram _histo = new Histogram(0, 50, 10);
protected static final long RECENT_INTERVAL = 5 * 60 * 1000L;
protected Histogram _histo = new Histogram(0, 20000, 10);
}
/** A flag indicating that the event dispatcher is still running. */
@@ -921,11 +907,14 @@ public class PresentsDObjectMgr
* should not be called from the event dispatch thread. */
protected Thread _dobjThread;
/** Used during unit profiling for timing values. */
protected Perf _timer = Perf.getPerf();
/** Used to profile our events and runnable units. */
protected HashMap _profiles = new HashMap();
/** Indicates whether or not profiling is enabled. */
protected static final boolean UNIT_PROFILING = true;
/** The frequency with which we take a profiling sample. */
protected static final int UNIT_PROFILING_INTERVAL = 100;
/** Check whether we should generate a report every 100 events. */
protected static final long REPORT_CHECK_PERIOD = 100;