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yacy_search_server
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creating a threaddump during every cleanup process

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to be able to find out what a peer did (not) last time before a crash
pull/402/head
Michael Peter Christen 4 years ago
parent 36e616271b
commit 22841ffbf1
3 changed files with 104 additions and 88 deletions
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100
htroot/Threaddump_p.java
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@ -25,20 +25,8 @@
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import java.io.File;
import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.lang.management.ThreadInfo;
import java.lang.management.ThreadMXBean;
import java.util.ArrayList;
import java.util.Date;
import java.util.Map;
import net.yacy.cora.protocol.RequestHeader;
import net.yacy.kelondro.logging.ThreadDump;
import net.yacy.kelondro.util.OS;
import net.yacy.peers.operation.yacyBuildProperties;
import net.yacy.search.Switchboard;
import net.yacy.server.serverObjects;
import net.yacy.server.serverSwitch;
@ -47,84 +35,26 @@ public class Threaddump_p {
public static serverObjects respond(@SuppressWarnings("unused") final RequestHeader header, final serverObjects post, final serverSwitch env) {
serverObjects prop = new serverObjects();
Switchboard sb = (Switchboard) env;
final StringBuilder buffer = new StringBuilder(1000);
final boolean plain = post != null && post.getBoolean("plain");
final int sleep = (post == null) ? 0 : post.getInt("sleep", 0); // a sleep before creation of a thread dump can be used for profiling
if (sleep > 0) try {Thread.sleep(sleep);} catch (final InterruptedException e) {}
prop.put("dump", "1");
// Thread dump
final Date dt = new Date();
final String versionstring = yacyBuildProperties.getVersion() + "/" + yacyBuildProperties.getSVNRevision();
Runtime runtime = Runtime.getRuntime();
ThreadDump.bufferappend(buffer, plain, "************* Start Thread Dump " + dt + " *******************");
ThreadDump.bufferappend(buffer, plain, " ");
ThreadDump.bufferappend(buffer, plain, "YaCy Version: " + versionstring);
ThreadDump.bufferappend(buffer, plain, "Assigned   Memory = " + (runtime.maxMemory()));
ThreadDump.bufferappend(buffer, plain, "Used       Memory = " + (runtime.totalMemory() - runtime.freeMemory()));
ThreadDump.bufferappend(buffer, plain, "Available  Memory = " + (runtime.maxMemory() - runtime.totalMemory() + runtime.freeMemory()));
ThreadDump.bufferappend(buffer, plain, " ");
ThreadDump.bufferappend(buffer, plain, " ");
serverObjects prop = new serverObjects();
Switchboard sb = (Switchboard) env;
int multipleCount = 100;
File appPath = sb.getAppPath();
if (post != null && post.containsKey("multipleThreaddump")) {
multipleCount = post.getInt("count", multipleCount);
final ArrayList<Map<Thread,StackTraceElement[]>> traces = new ArrayList<Map<Thread,StackTraceElement[]>>();
for (int i = 0; i < multipleCount; i++) {
try {
traces.add(ThreadDump.getAllStackTraces());
} catch (final OutOfMemoryError e) {
break;
}
}
ThreadDump.appendStackTraceStats(appPath, buffer, traces, plain);
} else {
// write a thread dump to standard error output
File logFile = new File("yacy.log");
if (ThreadDump.canProduceLockedBy(logFile)) {
try {
new ThreadDump(logFile).appendBlockTraces(buffer, plain);
} catch (final IOException e) {
e.printStackTrace();
}
} else if (OS.canExecUnix) {
ThreadDump.bufferappend(buffer, plain, "this thread dump function can find threads that lock others, to enable this function start YaCy with 'startYACY.sh -l'");
ThreadDump.bufferappend(buffer, plain, "&nbsp;");
}
final boolean plain = post != null && post.getBoolean("plain");
final int sleep = (post == null) ? 0 : post.getInt("sleep", 0); // a sleep before creation of a thread dump can be used for profiling
if (sleep > 0) try {Thread.sleep(sleep);} catch (final InterruptedException e) {}
prop.put("dump", "1");
// generate a single thread dump
final Map<Thread,StackTraceElement[]> stackTraces = ThreadDump.getAllStackTraces();
new ThreadDump(appPath, stackTraces, plain, Thread.State.BLOCKED).appendStackTraces(buffer, plain, Thread.State.BLOCKED);
new ThreadDump(appPath, stackTraces, plain, Thread.State.RUNNABLE).appendStackTraces(buffer, plain, Thread.State.RUNNABLE);
new ThreadDump(appPath, stackTraces, plain, Thread.State.TIMED_WAITING).appendStackTraces(buffer, plain, Thread.State.TIMED_WAITING);
new ThreadDump(appPath, stackTraces, plain, Thread.State.WAITING).appendStackTraces(buffer, plain, Thread.State.WAITING);
new ThreadDump(appPath, stackTraces, plain, Thread.State.NEW).appendStackTraces(buffer, plain, Thread.State.NEW);
new ThreadDump(appPath, stackTraces, plain, Thread.State.TERMINATED).appendStackTraces(buffer, plain, Thread.State.TERMINATED);
int multipleCount = 100;
boolean multiple = post != null && post.containsKey("multipleThreaddump");
if (multiple) {
multipleCount = post.getInt("count", multipleCount);
}
ThreadDump.bufferappend(buffer, plain, "************* End Thread Dump " + dt + " *******************");
String threaddump = ThreadDump.threaddump(sb, plain, sleep, multiple, multipleCount);
prop.put("plain_count", multipleCount);
prop.put("plain_content", threaddump);
prop.put("plain", (plain) ? 1 : 0);
ThreadDump.bufferappend(buffer, plain, "");
ThreadMXBean threadbean = ManagementFactory.getThreadMXBean();
ThreadDump.bufferappend(buffer, plain, "Thread list from ThreadMXBean, " + threadbean.getThreadCount() + " threads:");
ThreadInfo[] threadinfo = threadbean.dumpAllThreads(true, true);
for (ThreadInfo ti: threadinfo) {
ThreadDump.bufferappend(buffer, plain, ti.getThreadName());
}
prop.put("plain_count", multipleCount);
prop.put("plain_content", buffer.toString());
prop.put("plain", (plain) ? 1 : 0);
return prop; // return from serverObjects respond()
return prop;
}
}

75
source/net/yacy/kelondro/logging/ThreadDump.java
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@ -32,7 +32,11 @@ import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.RandomAccessFile;
import java.lang.management.ManagementFactory;
import java.lang.management.ThreadInfo;
import java.lang.management.ThreadMXBean;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@ -41,6 +45,8 @@ import java.util.regex.Pattern;
import net.yacy.document.parser.html.CharacterCoding;
import net.yacy.kelondro.util.FileUtils;
import net.yacy.kelondro.util.OS;
import net.yacy.peers.operation.yacyBuildProperties;
import net.yacy.search.Switchboard;
import net.yacy.utils.nxTools;
public class ThreadDump extends HashMap<ThreadDump.StackTrace, List<String>> implements Map<ThreadDump.StackTrace, List<String>> {
@ -372,7 +378,7 @@ public class ThreadDump extends HashMap<ThreadDump.StackTrace, List<String>> imp
}
public static void bufferappend(final StringBuilder buffer, final boolean plain, final String a) {
buffer.append(a);
buffer.append(plain ? a.replaceAll("&nbsp;", "") : a);
buffer.append(plain ? "\n" : "<br />");
}
@ -449,6 +455,73 @@ public class ThreadDump extends HashMap<ThreadDump.StackTrace, List<String>> imp
System.out.println("");
}
public static String threaddump(Switchboard sb, boolean plain, int sleep, boolean multiple, int multipleCount) {
final StringBuilder buffer = new StringBuilder(1000);
if (sleep > 0) try {Thread.sleep(sleep);} catch (final InterruptedException e) {}
// Thread dump
final Date dt = new Date();
final String versionstring = yacyBuildProperties.getVersion() + "/" + yacyBuildProperties.getSVNRevision();
Runtime runtime = Runtime.getRuntime();
ThreadDump.bufferappend(buffer, plain, "************* Start Thread Dump " + dt + " *******************");
ThreadDump.bufferappend(buffer, plain, "&nbsp;");
ThreadDump.bufferappend(buffer, plain, "YaCy Version: " + versionstring);
ThreadDump.bufferappend(buffer, plain, "Assigned&nbsp;&nbsp;&nbsp;Memory = " + (runtime.maxMemory()));
ThreadDump.bufferappend(buffer, plain, "Used&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Memory = " + (runtime.totalMemory() - runtime.freeMemory()));
ThreadDump.bufferappend(buffer, plain, "Available&nbsp;&nbsp;Memory = " + (runtime.maxMemory() - runtime.totalMemory() + runtime.freeMemory()));
ThreadDump.bufferappend(buffer, plain, "&nbsp;");
ThreadDump.bufferappend(buffer, plain, "&nbsp;");
File appPath = sb.getAppPath();
if (multiple) {
final ArrayList<Map<Thread,StackTraceElement[]>> traces = new ArrayList<Map<Thread,StackTraceElement[]>>();
for (int i = 0; i < multipleCount; i++) {
try {
traces.add(ThreadDump.getAllStackTraces());
} catch (final OutOfMemoryError e) {
break;
}
}
ThreadDump.appendStackTraceStats(appPath, buffer, traces, plain);
} else {
// write a thread dump to standard error output
File logFile = new File("yacy.log");
if (ThreadDump.canProduceLockedBy(logFile)) {
try {
new ThreadDump(logFile).appendBlockTraces(buffer, plain);
} catch (final IOException e) {
e.printStackTrace();
}
} else if (OS.canExecUnix) {
ThreadDump.bufferappend(buffer, plain, "this thread dump function can find threads that lock others, to enable this function start YaCy with 'startYACY.sh -l'");
ThreadDump.bufferappend(buffer, plain, "&nbsp;");
}
// generate a single thread dump
final Map<Thread,StackTraceElement[]> stackTraces = ThreadDump.getAllStackTraces();
new ThreadDump(appPath, stackTraces, plain, Thread.State.BLOCKED).appendStackTraces(buffer, plain, Thread.State.BLOCKED);
new ThreadDump(appPath, stackTraces, plain, Thread.State.RUNNABLE).appendStackTraces(buffer, plain, Thread.State.RUNNABLE);
new ThreadDump(appPath, stackTraces, plain, Thread.State.TIMED_WAITING).appendStackTraces(buffer, plain, Thread.State.TIMED_WAITING);
new ThreadDump(appPath, stackTraces, plain, Thread.State.WAITING).appendStackTraces(buffer, plain, Thread.State.WAITING);
new ThreadDump(appPath, stackTraces, plain, Thread.State.NEW).appendStackTraces(buffer, plain, Thread.State.NEW);
new ThreadDump(appPath, stackTraces, plain, Thread.State.TERMINATED).appendStackTraces(buffer, plain, Thread.State.TERMINATED);
}
ThreadDump.bufferappend(buffer, plain, "************* End Thread Dump " + dt + " *******************");
ThreadDump.bufferappend(buffer, plain, "");
ThreadMXBean threadbean = ManagementFactory.getThreadMXBean();
ThreadDump.bufferappend(buffer, plain, "Thread list from ThreadMXBean, " + threadbean.getThreadCount() + " threads:");
ThreadInfo[] threadinfo = threadbean.dumpAllThreads(true, true);
for (ThreadInfo ti: threadinfo) {
ThreadDump.bufferappend(buffer, plain, ti.getThreadName());
}
return buffer.toString();
}
public static void main(final String[] args) {
ThreadDump dump = null;
if (args.length == 2 && args[0].equals("-f")) {

17
source/net/yacy/search/Switchboard.java
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@ -49,6 +49,7 @@ import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.Reader;
import java.net.InetAddress;
import java.net.MalformedURLException;
@ -193,6 +194,7 @@ import net.yacy.kelondro.blob.Tables.SortDirection;
import net.yacy.kelondro.data.meta.URIMetadataNode;
import net.yacy.kelondro.data.word.Word;
import net.yacy.kelondro.logging.GuiHandler;
import net.yacy.kelondro.logging.ThreadDump;
import net.yacy.kelondro.rwi.ReferenceContainer;
import net.yacy.kelondro.util.FileUtils;
import net.yacy.kelondro.util.MemoryControl;
@ -2593,11 +2595,22 @@ public final class Switchboard extends serverSwitch {
}
public boolean cleanupJob() {
ConcurrentLog.ensureWorkerIsRunning();
try {
clearCaches();
// write a thread dump to log path
try {
File tdlog = new File(dataPath, "DATA/LOG/threaddump.txt");
PrintWriter out = new PrintWriter(tdlog);
String threaddump = ThreadDump.threaddump(this, true, 0, false, 0);
out.println(threaddump);
out.close();
} catch (IOException e) {
log.info("cannot write threaddump", e);
}
// clear caches if necessary
if ( !MemoryControl.request(128000000L, false) ) {
this.index.clearCaches();
@ -2621,7 +2634,7 @@ public final class Switchboard extends serverSwitch {
log.info("finishing greedy learning phase, size=" +cs);
}
}
// refresh recrawl dates
try {
CrawlProfile selentry;

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