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stack sampling for RouteServer

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This commit is contained in:
Arndt Brenschede 2018-12-16 13:35:17 +01:00
parent a9684d58db
commit 68aebed3a5
2 changed files with 16 additions and 1 deletions
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15
brouter-server/src/main/java/btools/server/RouteServer.java
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@ -2,6 +2,7 @@ package btools.server;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
@ -27,6 +28,7 @@ import btools.router.RoutingEngine;
import btools.server.request.ProfileUploadHandler;
import btools.server.request.RequestHandler;
import btools.server.request.ServerHandler;
import btools.util.StackSampler;
public class RouteServer extends Thread
{
@ -239,6 +241,19 @@ public class RouteServer extends Thread
TreeMap<Long,RouteServer> threadMap = new TreeMap<Long,RouteServer>();
ServerSocket serverSocket = args.length > 5 ? new ServerSocket(Integer.parseInt(args[3]),50,InetAddress.getByName(args[5])) : new ServerSocket(Integer.parseInt(args[3]));
// stacksample for performance profiling
// ( caution: start stacksampler only after successfully creating the server socket
// because that thread prevents the process from terminating, so the start-attempt
// by the watchdog cron would create zombies )
File stackLog = new File( "stacks.txt" );
if ( stackLog.exists() )
{
StackSampler stackSampler = new StackSampler( stackLog, 1000 );
stackSampler.start();
System.out.println( "*** sampling stacks into stacks.txt *** ");
}
long last_ts = 0;
for (;;)
{

2
brouter-util/src/main/java/btools/util/StackSampler.java
View file

@ -117,7 +117,7 @@ public class StackSampler extends Thread
{
positiveMatch = true;
}
if ( s.indexOf( "Thread.sleep" ) >= 0 )
if ( s.indexOf( "Thread.sleep" ) >= 0 || s.indexOf( "PlainSocketImpl.socketAccept" ) >= 0 )
{
return false;
}