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Commit 4824cae3 authored by zab's avatar zab
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Properly synchronize the Rate class 

	Add a new class to store results from rate calculations
	Add a new method to compute average, last and current measurements
	Use the new method in RouterThrottleImpl
parent 99179eda
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core/java/src/net/i2p/stat/Rate.java
+ 75
− 113
View file @ 4824cae3
...@@ -14,25 +14,25 @@ import net.i2p.data.DataHelper; ...@@ -14,25 +14,25 @@ import net.i2p.data.DataHelper;
*/ */
public class Rate { public class Rate {
//private final static Log _log = new Log(Rate.class); //private final static Log _log = new Log(Rate.class);
private volatile double _currentTotalValue; private double _currentTotalValue;
// was long, save space // was long, save space
private volatile int _currentEventCount; private int _currentEventCount;
private volatile long _currentTotalEventTime; private long _currentTotalEventTime;
private volatile double _lastTotalValue; private double _lastTotalValue;
// was long, save space // was long, save space
private volatile int _lastEventCount; private int _lastEventCount;
private volatile long _lastTotalEventTime; private long _lastTotalEventTime;
private volatile double _extremeTotalValue; private double _extremeTotalValue;
// was long, save space // was long, save space
private volatile int _extremeEventCount; private int _extremeEventCount;
private volatile long _extremeTotalEventTime; private long _extremeTotalEventTime;
private volatile double _lifetimeTotalValue; private double _lifetimeTotalValue;
private volatile long _lifetimeEventCount; private long _lifetimeEventCount;
private volatile long _lifetimeTotalEventTime; private long _lifetimeTotalEventTime;
private RateSummaryListener _summaryListener; private RateSummaryListener _summaryListener;
private RateStat _stat; private RateStat _stat;
private volatile long _lastCoalesceDate; private long _lastCoalesceDate;
private long _creationDate; private long _creationDate;
// was long, save space // was long, save space
private int _period; private int _period;
...@@ -41,37 +41,37 @@ public class Rate { ...@@ -41,37 +41,37 @@ public class Rate {
// private final Object _lock = new Object(); // private final Object _lock = new Object();
/** in the current (partial) period, what is the total value acrued through all events? */ /** in the current (partial) period, what is the total value acrued through all events? */
public double getCurrentTotalValue() { public synchronized double getCurrentTotalValue() {
return _currentTotalValue; return _currentTotalValue;
} }
/** in the current (partial) period, how many events have occurred? */ /** in the current (partial) period, how many events have occurred? */
public long getCurrentEventCount() { public synchronized long getCurrentEventCount() {
return _currentEventCount; return _currentEventCount;
} }
/** in the current (partial) period, how much of the time has been spent doing the events? */ /** in the current (partial) period, how much of the time has been spent doing the events? */
public long getCurrentTotalEventTime() { public synchronized long getCurrentTotalEventTime() {
return _currentTotalEventTime; return _currentTotalEventTime;
} }
/** in the last full period, what was the total value acrued through all events? */ /** in the last full period, what was the total value acrued through all events? */
public double getLastTotalValue() { public synchronized double getLastTotalValue() {
return _lastTotalValue; return _lastTotalValue;
} }
/** in the last full period, how many events occurred? */ /** in the last full period, how many events occurred? */
public long getLastEventCount() { public synchronized long getLastEventCount() {
return _lastEventCount; return _lastEventCount;
} }
/** in the last full period, how much of the time was spent doing the events? */ /** in the last full period, how much of the time was spent doing the events? */
public long getLastTotalEventTime() { public synchronized long getLastTotalEventTime() {
return _lastTotalEventTime; return _lastTotalEventTime;
} }
/** what was the max total value acrued in any period? */ /** what was the max total value acrued in any period? */
public double getExtremeTotalValue() { public synchronized double getExtremeTotalValue() {
return _extremeTotalValue; return _extremeTotalValue;
} }
...@@ -79,42 +79,42 @@ public class Rate { ...@@ -79,42 +79,42 @@ public class Rate {
* when the max(totalValue) was achieved, how many events occurred in that period? * when the max(totalValue) was achieved, how many events occurred in that period?
* Note that this is not necesarily the highest event count; that isn't tracked. * Note that this is not necesarily the highest event count; that isn't tracked.
*/ */
public long getExtremeEventCount() { public synchronized long getExtremeEventCount() {
return _extremeEventCount; return _extremeEventCount;
} }
/** when the max(totalValue) was achieved, how much of the time was spent doing the events? */ /** when the max(totalValue) was achieved, how much of the time was spent doing the events? */
public long getExtremeTotalEventTime() { public synchronized long getExtremeTotalEventTime() {
return _extremeTotalEventTime; return _extremeTotalEventTime;
} }
/** since rate creation, what was the total value acrued through all events? */ /** since rate creation, what was the total value acrued through all events? */
public double getLifetimeTotalValue() { public synchronized double getLifetimeTotalValue() {
return _lifetimeTotalValue; return _lifetimeTotalValue;
} }
/** since rate creation, how many events have occurred? */ /** since rate creation, how many events have occurred? */
public long getLifetimeEventCount() { public synchronized long getLifetimeEventCount() {
return _lifetimeEventCount; return _lifetimeEventCount;
} }
/** since rate creation, how much of the time was spent doing the events? */ /** since rate creation, how much of the time was spent doing the events? */
public long getLifetimeTotalEventTime() { public synchronized long getLifetimeTotalEventTime() {
return _lifetimeTotalEventTime; return _lifetimeTotalEventTime;
} }
/** when was the rate last coalesced? */ /** when was the rate last coalesced? */
public long getLastCoalesceDate() { public synchronized long getLastCoalesceDate() {
return _lastCoalesceDate; return _lastCoalesceDate;
} }
/** when was this rate created? */ /** when was this rate created? */
public long getCreationDate() { public synchronized long getCreationDate() {
return _creationDate; return _creationDate;
} }
/** how large should this rate's cycle be? */ /** how large should this rate's cycle be? */
public long getPeriod() { public synchronized long getPeriod() {
return _period; return _period;
} }
...@@ -160,13 +160,11 @@ public class Rate { ...@@ -160,13 +160,11 @@ public class Rate {
* If you always use this call, eventDuration is always zero, * If you always use this call, eventDuration is always zero,
* and the various get*Saturation*() and get*EventTime() methods will return zero. * and the various get*Saturation*() and get*EventTime() methods will return zero.
*/ */
public void addData(long value) { public synchronized void addData(long value) {
synchronized (this) { _currentTotalValue += value;
_currentTotalValue += value; _currentEventCount++;
_currentEventCount++; _lifetimeTotalValue += value;
_lifetimeTotalValue += value; _lifetimeEventCount++;
_lifetimeEventCount++;
}
} }
/** /**
...@@ -202,16 +200,14 @@ public class Rate { ...@@ -202,16 +200,14 @@ public class Rate {
* @param value value to accrue in the current period * @param value value to accrue in the current period
* @param eventDuration how long it took to accrue this data (set to 0 if it was instantaneous) * @param eventDuration how long it took to accrue this data (set to 0 if it was instantaneous)
*/ */
public void addData(long value, long eventDuration) { public synchronized void addData(long value, long eventDuration) {
synchronized (this) { _currentTotalValue += value;
_currentTotalValue += value; _currentEventCount++;
_currentEventCount++; _currentTotalEventTime += eventDuration;
_currentTotalEventTime += eventDuration;
_lifetimeTotalValue += value; _lifetimeTotalValue += value;
_lifetimeEventCount++; _lifetimeEventCount++;
_lifetimeTotalEventTime += eventDuration; _lifetimeTotalEventTime += eventDuration;
}
} }
/** 2s is plenty of slack to deal with slow coalescing (across many stats) */ /** 2s is plenty of slack to deal with slow coalescing (across many stats) */
...@@ -261,10 +257,8 @@ public class Rate { ...@@ -261,10 +257,8 @@ public class Rate {
/** /**
* What was the average value across the events in the last period? * What was the average value across the events in the last period?
*
* Warning - unsynchronized, might glitch during coalesce, caller may prevent by synchronizing on this.
*/ */
public double getAverageValue() { public synchronized double getAverageValue() {
int lec = _lastEventCount; // avoid race NPE int lec = _lastEventCount; // avoid race NPE
if ((_lastTotalValue != 0) && (lec > 0)) if ((_lastTotalValue != 0) && (lec > 0))
return _lastTotalValue / lec; return _lastTotalValue / lec;
...@@ -275,10 +269,8 @@ public class Rate { ...@@ -275,10 +269,8 @@ public class Rate {
/** /**
* During the extreme period (i.e. the period with the highest total value), * During the extreme period (i.e. the period with the highest total value),
* what was the average value? * what was the average value?
*
* Warning - unsynchronized, might glitch during coalesce, caller may prevent by synchronizing on this.
*/ */
public double getExtremeAverageValue() { public synchronized double getExtremeAverageValue() {
if ((_extremeTotalValue != 0) && (_extremeEventCount > 0)) if ((_extremeTotalValue != 0) && (_extremeEventCount > 0))
return _extremeTotalValue / _extremeEventCount; return _extremeTotalValue / _extremeEventCount;
...@@ -287,10 +279,8 @@ public class Rate { ...@@ -287,10 +279,8 @@ public class Rate {
/** /**
* What was the average value across the events since the stat was created? * What was the average value across the events since the stat was created?
*
* Warning - unsynchronized, might glitch during coalesce, caller may prevent by synchronizing on this.
*/ */
public double getLifetimeAverageValue() { public synchronized double getLifetimeAverageValue() {
if ((_lifetimeTotalValue != 0) && (_lifetimeEventCount > 0)) if ((_lifetimeTotalValue != 0) && (_lifetimeEventCount > 0))
return _lifetimeTotalValue / _lifetimeEventCount; return _lifetimeTotalValue / _lifetimeEventCount;
...@@ -303,7 +293,7 @@ public class Rate { ...@@ -303,7 +293,7 @@ public class Rate {
* *
* @return ratio, or 0 if event times aren't used * @return ratio, or 0 if event times aren't used
*/ */
public double getLastEventSaturation() { public synchronized double getLastEventSaturation() {
if ((_lastEventCount > 0) && (_lastTotalEventTime > 0)) { if ((_lastEventCount > 0) && (_lastTotalEventTime > 0)) {
/*double eventTime = (double) _lastTotalEventTime / (double) _lastEventCount; /*double eventTime = (double) _lastTotalEventTime / (double) _lastEventCount;
double maxEvents = _period / eventTime; double maxEvents = _period / eventTime;
...@@ -321,11 +311,9 @@ public class Rate { ...@@ -321,11 +311,9 @@ public class Rate {
* how much of the time was spent actually processing events * how much of the time was spent actually processing events
* in proportion to how many events could have occurred if there were no intervals? * in proportion to how many events could have occurred if there were no intervals?
* *
* Warning - unsynchronized, might glitch during coalesce, caller may prevent by synchronizing on this.
*
* @return ratio, or 0 if the statistic doesn't use event times * @return ratio, or 0 if the statistic doesn't use event times
*/ */
public double getExtremeEventSaturation() { public synchronized double getExtremeEventSaturation() {
if ((_extremeEventCount > 0) && (_extremeTotalEventTime > 0)) { if ((_extremeEventCount > 0) && (_extremeTotalEventTime > 0)) {
double eventTime = (double) _extremeTotalEventTime / (double) _extremeEventCount; double eventTime = (double) _extremeTotalEventTime / (double) _extremeEventCount;
double maxEvents = _period / eventTime; double maxEvents = _period / eventTime;
...@@ -338,11 +326,9 @@ public class Rate { ...@@ -338,11 +326,9 @@ public class Rate {
* During the lifetime of this stat, how much of the time was spent actually processing events in proportion * During the lifetime of this stat, how much of the time was spent actually processing events in proportion
* to how many events could have occurred if there were no intervals? * to how many events could have occurred if there were no intervals?
* *
* Warning - unsynchronized, might glitch during coalesce, caller may prevent by synchronizing on this.
*
* @return ratio, or 0 if event times aren't used * @return ratio, or 0 if event times aren't used
*/ */
public double getLifetimeEventSaturation() { public synchronized double getLifetimeEventSaturation() {
if ((_lastEventCount > 0) && (_lifetimeTotalEventTime > 0)) { if ((_lastEventCount > 0) && (_lifetimeTotalEventTime > 0)) {
double eventTime = (double) _lifetimeTotalEventTime / (double) _lifetimeEventCount; double eventTime = (double) _lifetimeTotalEventTime / (double) _lifetimeEventCount;
double maxEvents = _period / eventTime; double maxEvents = _period / eventTime;
...@@ -354,7 +340,7 @@ public class Rate { ...@@ -354,7 +340,7 @@ public class Rate {
} }
/** how many periods have we already completed? */ /** how many periods have we already completed? */
public long getLifetimePeriods() { public synchronized long getLifetimePeriods() {
long lifetime = now() - _creationDate; long lifetime = now() - _creationDate;
double periods = lifetime / (double) _period; double periods = lifetime / (double) _period;
return (long) Math.floor(periods); return (long) Math.floor(periods);
...@@ -364,11 +350,9 @@ public class Rate { ...@@ -364,11 +350,9 @@ public class Rate {
* using the last period's rate, what is the total value that could have been sent * using the last period's rate, what is the total value that could have been sent
* if events were constant? * if events were constant?
* *
* Warning - unsynchronized, might glitch during coalesce, caller may prevent by synchronizing on this.
*
* @return max total value, or 0 if event times aren't used * @return max total value, or 0 if event times aren't used
*/ */
public double getLastSaturationLimit() { public synchronized double getLastSaturationLimit() {
if ((_lastTotalValue != 0) && (_lastEventCount > 0) && (_lastTotalEventTime > 0)) { if ((_lastTotalValue != 0) && (_lastEventCount > 0) && (_lastTotalEventTime > 0)) {
double saturation = getLastEventSaturation(); double saturation = getLastEventSaturation();
if (saturation != 0.0D) return _lastTotalValue / saturation; if (saturation != 0.0D) return _lastTotalValue / saturation;
...@@ -383,11 +367,9 @@ public class Rate { ...@@ -383,11 +367,9 @@ public class Rate {
* what is the total value that could have been * what is the total value that could have been
* sent if events were constant? * sent if events were constant?
* *
* Warning - unsynchronized, might glitch during coalesce, caller may prevent by synchronizing on this.
*
* @return event total at saturation, or 0 if no event times are measured * @return event total at saturation, or 0 if no event times are measured
*/ */
public double getExtremeSaturationLimit() { public synchronized double getExtremeSaturationLimit() {
if ((_extremeTotalValue != 0) && (_extremeEventCount > 0) && (_extremeTotalEventTime > 0)) { if ((_extremeTotalValue != 0) && (_extremeEventCount > 0) && (_extremeTotalEventTime > 0)) {
double saturation = getExtremeEventSaturation(); double saturation = getExtremeEventSaturation();
if (saturation != 0.0d) return _extremeTotalValue / saturation; if (saturation != 0.0d) return _extremeTotalValue / saturation;
...@@ -402,10 +384,8 @@ public class Rate { ...@@ -402,10 +384,8 @@ public class Rate {
* What was the total value, compared to the total value in * What was the total value, compared to the total value in
* the extreme period (i.e. the period with the highest total value), * the extreme period (i.e. the period with the highest total value),
* Warning- returns ratio, not percentage (i.e. it is not multiplied by 100 here) * Warning- returns ratio, not percentage (i.e. it is not multiplied by 100 here)
*
* Warning - unsynchronized, might glitch during coalesce, caller may prevent by synchronizing on this.
*/ */
public double getPercentageOfExtremeValue() { public synchronized double getPercentageOfExtremeValue() {
if ((_lastTotalValue != 0) && (_extremeTotalValue != 0)) if ((_lastTotalValue != 0) && (_extremeTotalValue != 0))
return _lastTotalValue / _extremeTotalValue; return _lastTotalValue / _extremeTotalValue;
...@@ -415,10 +395,8 @@ public class Rate { ...@@ -415,10 +395,8 @@ public class Rate {
/** /**
* How large was the last period's value as compared to the lifetime average value? * How large was the last period's value as compared to the lifetime average value?
* Warning- returns ratio, not percentage (i.e. it is not multiplied by 100 here) * Warning- returns ratio, not percentage (i.e. it is not multiplied by 100 here)
*
* Warning - unsynchronized, might glitch during coalesce, caller may prevent by synchronizing on this.
*/ */
public double getPercentageOfLifetimeValue() { public synchronized double getPercentageOfLifetimeValue() {
if ((_lastTotalValue != 0) && (_lifetimeTotalValue != 0)) { if ((_lastTotalValue != 0) && (_lifetimeTotalValue != 0)) {
double lifetimePeriodValue = _period * (_lifetimeTotalValue / (now() - _creationDate)); double lifetimePeriodValue = _period * (_lifetimeTotalValue / (now() - _creationDate));
return _lastTotalValue / lifetimePeriodValue; return _lastTotalValue / lifetimePeriodValue;
...@@ -426,8 +404,27 @@ public class Rate { ...@@ -426,8 +404,27 @@ public class Rate {
return 0.0D; return 0.0D;
} }
/**
* @param out where to store the computed averages.
*/
public synchronized void computeAverages(RateAverages out) {
final long total = _currentEventCount + _lastEventCount;
if (total <= 0) {
out.setAverage(getAverageValue());
return;
}
if (_currentEventCount > 0)
out.setCurrent( getCurrentTotalValue() / _currentEventCount );
if (_lastEventCount > 0)
out.setLast( getLastTotalValue() / _lastEventCount );
out.setAverage( ( getCurrentTotalValue() + getLastTotalValue() ) / total );
}
public void store(String prefix, StringBuilder buf) throws IOException { public synchronized void store(String prefix, StringBuilder buf) throws IOException {
PersistenceHelper.addTime(buf, prefix, ".period", "Length of the period:", _period); PersistenceHelper.addTime(buf, prefix, ".period", "Length of the period:", _period);
PersistenceHelper.addDate(buf, prefix, ".creationDate", PersistenceHelper.addDate(buf, prefix, ".creationDate",
"When was this rate created?", _creationDate); "When was this rate created?", _creationDate);
...@@ -476,7 +473,7 @@ public class Rate { ...@@ -476,7 +473,7 @@ public class Rate {
* treat the data with as much freshness (or staleness) as appropriate. * treat the data with as much freshness (or staleness) as appropriate.
* @throws IllegalArgumentException if the data was formatted incorrectly * @throws IllegalArgumentException if the data was formatted incorrectly
*/ */
public void load(Properties props, String prefix, boolean treatAsCurrent) throws IllegalArgumentException { public synchronized void load(Properties props, String prefix, boolean treatAsCurrent) throws IllegalArgumentException {
_period = PersistenceHelper.getInt(props, prefix, ".period"); _period = PersistenceHelper.getInt(props, prefix, ".period");
_creationDate = PersistenceHelper.getLong(props, prefix, ".creationDate"); _creationDate = PersistenceHelper.getLong(props, prefix, ".creationDate");
_lastCoalesceDate = PersistenceHelper.getLong(props, prefix, ".lastCoalesceDate"); _lastCoalesceDate = PersistenceHelper.getLong(props, prefix, ".lastCoalesceDate");
...@@ -504,7 +501,7 @@ public class Rate { ...@@ -504,7 +501,7 @@ public class Rate {
* We base it on the stat we are tracking, not the stored data. * We base it on the stat we are tracking, not the stored data.
*/ */
@Override @Override
public boolean equals(Object obj) { public synchronized boolean equals(Object obj) {
if ((obj == null) || !(obj instanceof Rate)) return false; if ((obj == null) || !(obj instanceof Rate)) return false;
if (obj == this) return true; if (obj == this) return true;
Rate r = (Rate) obj; Rate r = (Rate) obj;
...@@ -519,12 +516,12 @@ public class Rate { ...@@ -519,12 +516,12 @@ public class Rate {
* (RateStat stores in an array) so let's make this easy. * (RateStat stores in an array) so let's make this easy.
*/ */
@Override @Override
public int hashCode() { public synchronized int hashCode() {
return DataHelper.hashCode(_stat) ^ _period ^ ((int) _creationDate); return DataHelper.hashCode(_stat) ^ _period ^ ((int) _creationDate);
} }
@Override @Override
public String toString() { public synchronized String toString() {
StringBuilder buf = new StringBuilder(2048); StringBuilder buf = new StringBuilder(2048);
buf.append("\n\t total value: ").append(getLastTotalValue()); buf.append("\n\t total value: ").append(getLastTotalValue());
buf.append("\n\t highest total value: ").append(getExtremeTotalValue()); buf.append("\n\t highest total value: ").append(getExtremeTotalValue());
...@@ -554,39 +551,4 @@ public class Rate { ...@@ -554,39 +551,4 @@ public class Rate {
// skew periodically // skew periodically
return System.currentTimeMillis(); //Clock.getInstance().now(); return System.currentTimeMillis(); //Clock.getInstance().now();
} }
/******
public static void main(String args[]) {
Rate rate = new Rate(1000);
for (int i = 0; i < 50; i++) {
try {
Thread.sleep(20);
} catch (InterruptedException ie) { // nop
}
rate.addData(i * 100, 20);
}
rate.coalesce();
StringBuilder buf = new StringBuilder(1024);
try {
rate.store("rate.test", buf);
byte data[] = buf.toString().getBytes();
_log.error("Stored rate: size = " + data.length + "\n" + buf.toString());
Properties props = new Properties();
props.load(new java.io.ByteArrayInputStream(data));
//_log.error("Properties loaded: \n" + props);
Rate r = new Rate(props, "rate.test", true);
_log.error("Comparison after store/load: " + r.equals(rate));
} catch (Throwable t) {
_log.error("b0rk", t);
}
try {
Thread.sleep(5000);
} catch (InterruptedException ie) { // nop
}
}
******/
} }
core/java/src/net/i2p/stat/RateAverages.java 0 → 100644
+ 37
− 0
View file @ 4824cae3
package net.i2p.stat;
public class RateAverages {
private double average, current, last;
public void reset() {
average = 0;
current = 0;
last = 0;
}
public double getAverage() {
return average;
}
public void setAverage(double average) {
this.average = average;
}
public double getCurrent() {
return current;
}
public void setCurrent(double current) {
this.current = current;
}
public double getLast() {
return last;
}
public void setLast(double last) {
this.last = last;
}
}
router/java/src/net/i2p/router/RouterThrottleImpl.java
+ 20
− 25
View file @ 4824cae3
...@@ -3,6 +3,7 @@ package net.i2p.router; ...@@ -3,6 +3,7 @@ package net.i2p.router;
import net.i2p.data.Hash; import net.i2p.data.Hash;
import net.i2p.router.peermanager.TunnelHistory; import net.i2p.router.peermanager.TunnelHistory;
import net.i2p.stat.Rate; import net.i2p.stat.Rate;
import net.i2p.stat.RateAverages;
import net.i2p.stat.RateStat; import net.i2p.stat.RateStat;
import net.i2p.util.Log; import net.i2p.util.Log;
import net.i2p.util.SimpleScheduler; import net.i2p.util.SimpleScheduler;
...@@ -40,6 +41,15 @@ class RouterThrottleImpl implements RouterThrottle { ...@@ -40,6 +41,15 @@ class RouterThrottleImpl implements RouterThrottle {
private static final int PREPROCESSED_SIZE = 1024; private static final int PREPROCESSED_SIZE = 1024;
private static final long REJECT_STARTUP_TIME = 20*60*1000; private static final long REJECT_STARTUP_TIME = 20*60*1000;
/** scratch space for calculations of rate averages */
private static final ThreadLocal<RateAverages> RATE_AVERAGES =
new ThreadLocal<RateAverages>() {
@Override
public RateAverages initialValue() {
return new RateAverages();
}
};
public RouterThrottleImpl(RouterContext context) { public RouterThrottleImpl(RouterContext context) {
_context = context; _context = context;
...@@ -119,6 +129,9 @@ class RouterThrottleImpl implements RouterThrottle { ...@@ -119,6 +129,9 @@ class RouterThrottleImpl implements RouterThrottle {
//long lag = _context.jobQueue().getMaxLag(); //long lag = _context.jobQueue().getMaxLag();
// reject here if lag too high??? // reject here if lag too high???
RateAverages ra = RATE_AVERAGES.get();
ra.reset();
// TODO // TODO
// This stat is highly dependent on transport mix. // This stat is highly dependent on transport mix.
// For NTCP, it is queueing delay only, ~25ms // For NTCP, it is queueing delay only, ~25ms
...@@ -133,37 +146,19 @@ class RouterThrottleImpl implements RouterThrottle { ...@@ -133,37 +146,19 @@ class RouterThrottleImpl implements RouterThrottle {
//Reject tunnels if the time to process messages and send them is too large. Too much time implies congestion. //Reject tunnels if the time to process messages and send them is too large. Too much time implies congestion.
if(r != null) { if(r != null) {
long current = r.getCurrentEventCount(); r.computeAverages(ra);
long last = r.getLastEventCount();
long total = current + last;
double avgSendProcessingTime = 0;
double currentSendProcessingTime = 0;
double lastSendProcessingTime = 0;
//Calculate times
if(total > 0) {
if(current > 0)
currentSendProcessingTime = r.getCurrentTotalValue() / current;
if(last > 0)
lastSendProcessingTime = r.getLastTotalValue() / last;
avgSendProcessingTime = (r.getCurrentTotalValue() + r.getLastTotalValue()) / total;
} else {
avgSendProcessingTime = r.getAverageValue();
//if(_log.shouldLog(Log.WARN))
// _log.warn("No events occurred. Using 1 minute average to look at message delay.");
}
int maxProcessingTime = _context.getProperty(PROP_MAX_PROCESSINGTIME, DEFAULT_MAX_PROCESSINGTIME); int maxProcessingTime = _context.getProperty(PROP_MAX_PROCESSINGTIME, DEFAULT_MAX_PROCESSINGTIME);
//Set throttling if necessary //Set throttling if necessary
if((avgSendProcessingTime > maxProcessingTime*0.9 if((ra.getAverage() > maxProcessingTime*0.9
|| currentSendProcessingTime > maxProcessingTime || ra.getCurrent() > maxProcessingTime
|| lastSendProcessingTime > maxProcessingTime)) { || ra.getLast() > maxProcessingTime)) {
if(_log.shouldLog(Log.WARN)) { if(_log.shouldLog(Log.WARN)) {
_log.warn("Refusing tunnel request due to sendProcessingTime " + _log.warn("Refusing tunnel request due to sendProcessingTime " +
((int)currentSendProcessingTime) + " / " + ((int)ra.getCurrent()) + " / " +
((int)lastSendProcessingTime) + " / " + ((int)ra.getLast()) + " / " +
((int)avgSendProcessingTime) + " / " + ((int)ra.getAverage()) + " / " +
maxProcessingTime + maxProcessingTime +
" current/last/avg/max ms"); " current/last/avg/max ms");
} }
......
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