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Graphs: Reduce rrd4j sync thread pool size

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disable pool if not persisting
stop pool on shutdown
This commit is contained in:
zzz
2020-04-07 14:47:18 +00:00
parent 83a4f5f2f0
commit 928c0e9b91
1 changed files with 22 additions and 2 deletions
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24
apps/routerconsole/java/src/net/i2p/router/web/StatSummarizer.java
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@ -11,6 +11,9 @@ import java.util.StringTokenizer;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.Semaphore;
import org.rrd4j.core.RrdBackendFactory;
import org.rrd4j.core.RrdNioBackendFactory;
import net.i2p.I2PAppContext;
import net.i2p.app.ClientApp;
import net.i2p.app.ClientAppState;
@ -83,15 +86,27 @@ public class StatSummarizer implements Runnable, ClientApp {
}
_isRunning = true;
boolean isPersistent = _context.getBooleanPropertyDefaultTrue(SummaryListener.PROP_PERSISTENT);
if (!isPersistent)
int syncThreads;
if (isPersistent) {
String spec = _context.getProperty("stat.summaries", DEFAULT_DATABASES);
String[] rates = DataHelper.split(spec, ",");
syncThreads = Math.min(rates.length / 2, 4);
} else {
syncThreads = 0;
deleteOldRRDs();
}
RrdNioBackendFactory.setSyncPoolSize(syncThreads);
_thread = Thread.currentThread();
_context.clientAppManager().register(this);
String specs = "";
try {
while (_isRunning && _context.router().isAlive()) {
specs = adjustDatabases(specs);
try { Thread.sleep(60*1000); } catch (InterruptedException ie) {}
try {
Thread.sleep(60*1000);
} catch (InterruptedException ie) {
break;
}
}
} finally {
_isRunning = false;
@ -463,6 +478,11 @@ public class StatSummarizer implements Runnable, ClientApp {
lsnr.stopListening();
}
_listeners.clear();
// stops the sync thread pool in NIO; noop if not persistent,
// we set num threads to zero in run() above
try {
RrdBackendFactory.getDefaultFactory().close();
} catch (IOException ioe) {}
}
}
}