Subsonic Forum

Hi All,

I'm having some problems with a new Subsonic installation on Ubuntu 14.04. I've been using Subsonic on Windows for years without too many issues, but recently migrated my library to a dedicated server. Here's what's happening:

Subsonic starts up without issue when the server boots up (or when I manually start the service). However, after some period of time, it stops responding when I try to access it. When the problem first occurred, it would happen after maybe 24 hours or so. I checked the log file and saw that I would always get an error that said:

Code: Select all

ERROR MediaScannerService - Failed to scan media library.
java.lang.OutOfMemoryError: Java heap space

After searching the forum, I saw some people had mentioned that the default max-memory argument is too low, and to increase it. So I increased it to 300, and found that while the problem kept occurring, it took longer for it to happen. I increased max-memory to 512, same thing. Finally I increased max-memory to 1024 - now it works for a few days without issue, but will eventually still stop responding.

My music library is 6,076 songs and 126.99 GB (mostly FLAC). Here's a partial of my log file:

Code: Select all

[2014-10-29 02:57:00,689] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 03:00:01,100] INFO MediaScannerService - Starting to scan media library.
[2014-10-29 03:00:52,831] INFO MediaScannerService - Scanned media library with 250 entries.
[2014-10-29 03:01:54,277] INFO MediaScannerService - Scanned media library with 500 entries.
[2014-10-29 03:02:26,565] INFO MediaScannerService - Scanned media library with 750 entries.
[2014-10-29 03:02:50,289] INFO MediaScannerService - Scanned media library with 1000 entries.
[2014-10-29 03:03:16,982] INFO MediaScannerService - Scanned media library with 1250 entries.
[2014-10-29 03:03:49,704] INFO MediaScannerService - Scanned media library with 1500 entries.
[2014-10-29 03:04:24,208] INFO MediaScannerService - Scanned media library with 1750 entries.
[2014-10-29 03:05:05,109] INFO MediaScannerService - Scanned media library with 2000 entries.
[2014-10-29 03:06:01,060] INFO MediaScannerService - Scanned media library with 2250 entries.
[2014-10-29 03:07:21,375] INFO MediaScannerService - Scanned media library with 2500 entries.
[2014-10-29 03:09:18,130] INFO MediaScannerService - Scanned media library with 2750 entries.
[2014-10-29 03:11:23,423] ERROR MediaScannerService - Failed to scan media library.
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 03:11:25,098] ERROR SearchService - Failed to create search index.
java.lang.IllegalStateException: this writer hit an OutOfMemoryError; cannot flush
        at org.apache.lucene.index.IndexWriter.doFlushInternal(IndexWriter.java:3612)
        at org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3595)
        at org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:3585)
        at org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:2338)
        at org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:2316)
        at org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:2286)
        at net.sourceforge.subsonic.service.SearchService.stopIndexing(SearchService.java:158)
        at net.sourceforge.subsonic.service.MediaScannerService.doScanLibrary(MediaScannerService.java:207)
        at net.sourceforge.subsonic.service.MediaScannerService.access$000(MediaScannerService.java:48)
        at net.sourceforge.subsonic.service.MediaScannerService$2.run(MediaScannerService.java:147)

[2014-10-29 03:11:25,666] INFO PlaylistService - Starting playlist import.
[2014-10-29 03:11:25,666] INFO PlaylistService - Completed playlist import.
[2014-10-29 03:11:25,666] INFO PlaylistService - Starting playlist statistics update.
[2014-10-29 03:11:25,666] INFO PlaylistService - Completed playlist statistics update.
[2014-10-29 04:57:13,085] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 04:57:23,622] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 06:53:26,865] WARN SettingsService - Failed to validate license.
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 06:57:36,510] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 06:57:47,629] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 06:58:06,942] INFO PodcastService - Starting scheduled Podcast refresh.
[2014-10-29 06:58:07,263] INFO PodcastService - Completed scheduled Podcast refresh.
[2014-10-29 08:58:04,356] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 08:58:12,133] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 10:58:31,123] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 10:58:39,872] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 12:58:58,007] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 12:59:08,318] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 14:59:25,749] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 14:59:37,906] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 17:00:07,238] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 17:00:23,318] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 19:00:47,603] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 19:01:00,494] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 21:01:18,169] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 21:01:42,482] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 23:01:56,714] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-29 23:02:22,995] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 01:02:42,724] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 01:03:06,776] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 03:00:00,845] INFO MediaScannerService - Starting to scan media library.
[2014-10-30 03:00:18,668] INFO MediaScannerService - Scanned media library with 250 entries.
[2014-10-30 03:00:38,159] INFO MediaScannerService - Scanned media library with 500 entries.
[2014-10-30 03:00:58,630] INFO MediaScannerService - Scanned media library with 750 entries.
[2014-10-30 03:01:21,405] INFO MediaScannerService - Scanned media library with 1000 entries.
[2014-10-30 03:01:48,385] INFO MediaScannerService - Scanned media library with 1250 entries.
[2014-10-30 03:02:19,371] INFO MediaScannerService - Scanned media library with 1500 entries.
[2014-10-30 03:02:52,312] INFO MediaScannerService - Scanned media library with 1750 entries.
[2014-10-30 03:04:39,289] ERROR MediaScannerService - Failed to scan media library.
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 03:04:58,196] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 03:05:17,980] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 05:05:55,875] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 05:06:34,805] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 06:58:06,942] INFO PodcastService - Starting scheduled Podcast refresh.
[2014-10-30 06:58:06,942] INFO PodcastService - Completed scheduled Podcast refresh.
[2014-10-30 07:07:11,056] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 07:07:52,753] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 09:08:26,862] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 09:09:10,688] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 11:09:48,103] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 11:10:34,284] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 13:11:14,318] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 13:12:00,245] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 15:12:31,989] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 15:13:18,344] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 17:13:51,787] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 17:14:34,664] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 19:15:08,754] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 19:15:56,028] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 21:16:32,609] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 21:17:21,121] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 23:17:56,282] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-30 23:18:48,174] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-31 01:19:22,202] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-31 01:20:15,046] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-31 03:20:46,518] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-31 03:21:25,956] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-31 05:22:01,750] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-31 05:22:53,823] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-31 06:58:06,942] INFO PodcastService - Starting scheduled Podcast refresh.
[2014-10-31 06:58:06,945] INFO PodcastService - Completed scheduled Podcast refresh.
[2014-10-31 07:23:27,298] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-31 07:24:15,882] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-31 09:24:55,601] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-31 09:25:45,414] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-10-31 11:26:24,250] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-10-31 11:26:40,595] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space


Unfortunately I didn't grab the whole log file, and have since restarted the service so the new one doesn't have errors. I can attach the full log file the next time it crashes.

Anybody have any ideas? Thanks much!

-Bob

Just a hunch, are you running default java 1.7 ?

Code: Select all

java -version
java version "1.7.0_65"
OpenJDK Runtime Environment (IcedTea 2.5.3) (7u71-2.5.3-0ubuntu0.14.04.1)
OpenJDK Server VM (build 24.65-b04, mixed mode)

There is a sticky regarding its incompatibility. I'm installing 1.6 because of course requirement, here are short instructions if you need it (Mint is a Ubuntu spinoff).
http://forums.linuxmint.com/viewtopic.php?f=197&t=149068

George

Hi George,

Thanks for the reply. I didn't notice that sticky, but it turns out that I AM actually running java 1.6. Here's the output of the java -version command:

Code: Select all

$ java -version
java version "1.6.0_33"
OpenJDK Runtime Environment (IcedTea6 1.13.5) (6b33-1.13.5-1ubuntu0.14.04)
OpenJDK 64-Bit Server VM (build 23.25-b01, mixed mode)


Any other ideas? I guess I could try upgrading to 1.7 and see if that helps.

Just as an additional info, I'm not running ubuntu packaged java 1.6, installed from Oracle.

Code: Select all

george@georgeDesktop ~ $ java -version
java version "1.6.0_45"
Java(TM) SE Runtime Environment (build 1.6.0_45-b06)
Java HotSpot(TM) Server VM (build 20.45-b01, mixed mode)

I have 500+ GB of flac, no scanning issues, --max-memory=200, subsonic5.0 (build 4100) – September 21, 2014

Okay, I've switched to Oracle Java (trying 1.8 first, will try 1.6 if it doesn't help) and reduced my max-memory back to 200. I'll post back if I keep having problems.

Thank you!

Okay, I tried switching to Oracle Java. I tried version 1.8 AND 1.6, and neither seems to be working. Here are my logs:

Oracle Java 1.8:

Code: Select all

[2014-11-06 13:59:20,820] INFO DaoHelper - Checking database schema.
[2014-11-06 13:59:21,113] INFO DaoHelper - Done checking database schema.
[2014-11-06 13:59:21,232] INFO VersionService - Resolved local Subsonic version to: 5.0
[2014-11-06 13:59:21,486] INFO MediaScannerService - Automatic media library scanning scheduled to run every 1 day(s), starting at Fri Nov 07 03:00:00 EST 2014
[2014-11-06 13:59:21,535] INFO UPnPService - Starting UPnP service...
[2014-11-06 13:59:21,599] INFO PodcastService - Automatic Podcast update scheduled to run every 24 hour(s), starting at Thu Nov 06 14:04:21 EST 2014
[2014-11-06 13:59:21,925] INFO UPnPService - Enabling UPnP/DLNA media server
[2014-11-06 13:59:21,925] INFO UPnPService - Starting UPnP service - Done!
[2014-11-06 13:59:31,547] INFO NetworkService - Deleted port mapping for port 4040
[2014-11-06 14:04:21,596] INFO PodcastService - Starting scheduled Podcast refresh.
[2014-11-06 14:04:21,597] INFO PodcastService - Completed scheduled Podcast refresh.
[2014-11-07 03:00:00,486] INFO MediaScannerService - Starting to scan media library.
[2014-11-07 03:00:01,712] INFO MediaScannerService - Scanned media library with 250 entries.
[2014-11-07 03:00:02,520] INFO MediaScannerService - Scanned media library with 500 entries.
[2014-11-07 03:00:03,241] INFO MediaScannerService - Scanned media library with 750 entries.
[2014-11-07 03:00:04,129] INFO MediaScannerService - Scanned media library with 1000 entries.
[2014-11-07 03:00:04,880] INFO MediaScannerService - Scanned media library with 1250 entries.
[2014-11-07 03:00:05,761] INFO MediaScannerService - Scanned media library with 1500 entries.
[2014-11-07 03:00:06,517] INFO MediaScannerService - Scanned media library with 1750 entries.
[2014-11-07 03:00:07,300] INFO MediaScannerService - Scanned media library with 2000 entries.
[2014-11-07 03:00:08,191] INFO MediaScannerService - Scanned media library with 2250 entries.
[2014-11-07 03:00:08,869] INFO MediaScannerService - Scanned media library with 2500 entries.
[2014-11-07 03:00:09,691] INFO MediaScannerService - Scanned media library with 2750 entries.
[2014-11-07 03:00:10,502] INFO MediaScannerService - Scanned media library with 3000 entries.
[2014-11-07 03:00:11,174] INFO MediaScannerService - Scanned media library with 3250 entries.
[2014-11-07 03:00:12,353] INFO MediaScannerService - Scanned media library with 3500 entries.
[2014-11-07 03:00:13,178] INFO MediaScannerService - Scanned media library with 3750 entries.
[2014-11-07 03:00:13,845] INFO MediaScannerService - Scanned media library with 4000 entries.
[2014-11-07 03:00:14,656] INFO MediaScannerService - Scanned media library with 4250 entries.
[2014-11-07 03:00:15,479] INFO MediaScannerService - Scanned media library with 4500 entries.
[2014-11-07 03:00:16,327] INFO MediaScannerService - Scanned media library with 4750 entries.
[2014-11-07 03:00:17,057] INFO MediaScannerService - Scanned media library with 5000 entries.
[2014-11-07 03:00:17,704] INFO MediaScannerService - Scanned media library with 5250 entries.
[2014-11-07 03:00:18,634] INFO MediaScannerService - Scanned media library with 5500 entries.
[2014-11-07 03:00:19,387] INFO MediaScannerService - Scanned media library with 5750 entries.
[2014-11-07 03:00:19,986] INFO MediaScannerService - Scanned media library with 6000 entries.
[2014-11-07 03:00:20,603] INFO MediaScannerService - Scanned media library with 6250 entries.
[2014-11-07 03:00:21,395] INFO MediaScannerService - Scanned media library with 6500 entries.
[2014-11-07 03:00:22,159] INFO MediaScannerService - Scanned media library with 6750 entries.
[2014-11-07 03:00:22,311] INFO MediaScannerService - Scanned media library with 6825 entries.
[2014-11-07 03:00:22,311] INFO MediaScannerService - Marking non-present files.
[2014-11-07 03:00:22,315] INFO MediaScannerService - Marking non-present artists.
[2014-11-07 03:00:22,316] INFO MediaScannerService - Marking non-present albums.
[2014-11-07 03:00:22,319] INFO MediaScannerService - Completed media library scan.
[2014-11-07 03:00:22,813] INFO PlaylistService - Starting playlist import.
[2014-11-07 03:00:22,813] INFO PlaylistService - Completed playlist import.
[2014-11-07 03:00:22,813] INFO PlaylistService - Starting playlist statistics update.
[2014-11-07 03:00:22,813] INFO PlaylistService - Completed playlist statistics update.


Oracle Java 1.6:

Code: Select all

[2014-11-07 13:57:43,655] INFO DaoHelper - Checking database schema.
[2014-11-07 13:57:48,059] INFO DaoHelper - Done checking database schema.
[2014-11-07 13:57:50,269] INFO VersionService - Resolved local Subsonic version to: 5.0
[2014-11-07 13:57:50,467] INFO MediaScannerService - Automatic media library scanning scheduled to run every 1 day(s), starting at Sat Nov 08 03:00:00 EST 2014
[2014-11-07 13:57:50,496] INFO UPnPService - Starting UPnP service...
[2014-11-07 13:57:50,521] INFO PodcastService - Automatic Podcast update scheduled to run every 24 hour(s), starting at Fri Nov 07 14:02:50 EST 2014
[2014-11-07 13:57:50,964] INFO UPnPService - Enabling UPnP/DLNA media server
[2014-11-07 13:57:50,965] INFO UPnPService - Starting UPnP service - Done!
[2014-11-07 13:58:00,505] INFO NetworkService - Deleted port mapping for port 4040
[2014-11-07 14:02:50,521] INFO PodcastService - Starting scheduled Podcast refresh.
[2014-11-07 14:02:50,522] INFO PodcastService - Completed scheduled Podcast refresh.
[2014-11-08 01:58:09,388] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space
   at sun.security.util.DerValue.encode(DerValue.java:385)
   at sun.security.util.DerValue.toByteArray(DerValue.java:792)
   at sun.security.x509.X509CertImpl.parse(X509CertImpl.java:1706)
   at sun.security.x509.X509CertImpl.<init>(X509CertImpl.java:177)
   at sun.security.provider.X509Factory.engineGenerateCertificate(X509Factory.java:90)
   at java.security.cert.CertificateFactory.generateCertificate(CertificateFactory.java:305)
   at sun.security.provider.JavaKeyStore.engineLoad(JavaKeyStore.java:746)
   at sun.security.provider.JavaKeyStore$JKS.engineLoad(JavaKeyStore.java:38)
   at java.security.KeyStore.load(KeyStore.java:1185)
   at com.sun.net.ssl.internal.ssl.TrustManagerFactoryImpl.getCacertsKeyStore(TrustManagerFactoryImpl.java:202)
   at com.sun.net.ssl.internal.ssl.TrustManagerFactoryImpl.engineInit(TrustManagerFactoryImpl.java:31)
   at javax.net.ssl.TrustManagerFactory.init(TrustManagerFactory.java:230)
   at com.sun.net.ssl.internal.ssl.SSLContextImpl.engineInit(SSLContextImpl.java:54)
   at javax.net.ssl.SSLContext.init(SSLContext.java:248)
   at org.apache.http.conn.ssl.SSLSocketFactory.getSocketFactory(SSLSocketFactory.java:172)
   at org.apache.http.impl.conn.SchemeRegistryFactory.createDefault(SchemeRegistryFactory.java:49)
   at org.apache.http.impl.client.AbstractHttpClient.createClientConnectionManager(AbstractHttpClient.java:306)
   at org.apache.http.impl.client.AbstractHttpClient.getConnectionManager(AbstractHttpClient.java:466)
   at org.apache.http.impl.client.AbstractHttpClient.createHttpContext(AbstractHttpClient.java:286)
   at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:851)
   at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805)
   at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:784)
   at net.sourceforge.subsonic.service.NetworkService$URLRedirectionTask.execute(NetworkService.java:245)
   at net.sourceforge.subsonic.service.NetworkService$Task.run(NetworkService.java:306)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
   at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
   at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
   at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
   at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180)
   at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204)
   at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)

[2014-11-08 01:59:09,939] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 01:59:21,429] WARN SettingsService - Failed to validate license.
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 03:00:00,590] INFO MediaScannerService - Starting to scan media library.
[2014-11-08 03:00:04,036] ERROR MediaScannerService - Failed to scan media library.
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 03:00:04,036] ERROR SearchService - Failed to create search index.
java.lang.IllegalStateException: this writer hit an OutOfMemoryError; cannot flush
   at org.apache.lucene.index.IndexWriter.doFlushInternal(IndexWriter.java:3612)
   at org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3595)
   at org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:3585)
   at org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:2338)
   at org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:2316)
   at org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:2286)
   at net.sourceforge.subsonic.service.SearchService.stopIndexing(SearchService.java:154)
   at net.sourceforge.subsonic.service.MediaScannerService.doScanLibrary(MediaScannerService.java:207)
   at net.sourceforge.subsonic.service.MediaScannerService.access$000(MediaScannerService.java:48)
   at net.sourceforge.subsonic.service.MediaScannerService$2.run(MediaScannerService.java:147)

[2014-11-08 03:00:05,471] INFO PlaylistService - Starting playlist import.
[2014-11-08 03:00:05,471] INFO PlaylistService - Completed playlist import.
[2014-11-08 03:00:05,471] INFO PlaylistService - Starting playlist statistics update.
[2014-11-08 03:00:05,471] INFO PlaylistService - Completed playlist statistics update.
[2014-11-08 03:59:26,718] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 03:59:44,462] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 06:00:12,360] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 06:00:26,426] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 08:00:48,165] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 08:01:04,848] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 10:01:16,976] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 10:01:56,786] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 12:02:10,631] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 12:02:43,532] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 14:02:50,988] INFO PodcastService - Starting scheduled Podcast refresh.
[2014-11-08 14:02:54,497] INFO PodcastService - Completed scheduled Podcast refresh.
[2014-11-08 14:03:06,755] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 14:03:39,570] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 16:04:00,408] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 16:04:41,321] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 18:05:08,874] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 18:05:37,744] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 20:06:05,030] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 20:06:55,537] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 22:07:22,184] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-08 22:07:43,083] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-11-09 00:08:06,233] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-09 00:08:29,532] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-11-09 02:09:00,866] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-09 02:09:27,836] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-11-09 03:00:00,715] INFO MediaScannerService - Starting to scan media library.
[2014-11-09 03:00:05,688] ERROR MediaScannerService - Failed to scan media library.
java.lang.OutOfMemoryError: Java heap space

[2014-11-09 03:00:05,689] ERROR SearchService - Failed to create search index.
java.lang.IllegalStateException: this writer hit an OutOfMemoryError; cannot flush
   at org.apache.lucene.index.IndexWriter.doFlushInternal(IndexWriter.java:3612)
   at org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3595)
   at org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:3585)
   at org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:2338)
   at org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:2316)
   at org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:2286)
   at net.sourceforge.subsonic.service.SearchService.stopIndexing(SearchService.java:154)
   at net.sourceforge.subsonic.service.MediaScannerService.doScanLibrary(MediaScannerService.java:207)
   at net.sourceforge.subsonic.service.MediaScannerService.access$000(MediaScannerService.java:48)
   at net.sourceforge.subsonic.service.MediaScannerService$2.run(MediaScannerService.java:147)

[2014-11-09 03:00:06,333] INFO PlaylistService - Starting playlist import.
[2014-11-09 03:00:06,333] INFO PlaylistService - Completed playlist import.
[2014-11-09 03:00:06,333] INFO PlaylistService - Starting playlist statistics update.
[2014-11-09 03:00:06,618] INFO PlaylistService - Completed playlist statistics update.
[2014-11-09 04:09:43,767] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-09 04:10:06,412] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-11-09 06:10:20,929] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-09 06:10:31,115] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-11-09 08:10:46,947] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-09 08:11:12,729] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space

[2014-11-09 10:11:36,230] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-09 10:11:55,383] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space


What's interesting is that I only got the OutOfMemoryError with Java 1.6. Java 1.8 didn't show any errors in the log. And yet, Subsonic still wouldn't respond on its assigned port after about a day or so. Is there anything else I should try? What might I be able to do to debug the problem with 1.8 if there aren't any errors in the log?

Bob

Okay, I may have spoken too soon about Oracle Java 1.8. I do, in fact, get the OutOfMemoryError when I'm using that one as well. Selection from the log file is below:

Code: Select all

[2014-11-11 03:00:00,624] INFO MediaScannerService - Starting to scan media library.
[2014-11-11 03:00:00,955] INFO MediaScannerService - Scanned media library with 250 entries.
[2014-11-11 03:00:01,190] INFO MediaScannerService - Scanned media library with 500 entries.
[2014-11-11 03:00:01,341] INFO MediaScannerService - Scanned media library with 750 entries.
[2014-11-11 03:00:01,484] INFO MediaScannerService - Scanned media library with 1000 entries.
[2014-11-11 03:00:01,804] INFO MediaScannerService - Scanned media library with 1250 entries.
[2014-11-11 03:00:01,937] INFO MediaScannerService - Scanned media library with 1500 entries.
[2014-11-11 03:00:02,058] INFO MediaScannerService - Scanned media library with 1750 entries.
[2014-11-11 03:00:02,176] INFO MediaScannerService - Scanned media library with 2000 entries.
[2014-11-11 03:00:02,289] INFO MediaScannerService - Scanned media library with 2250 entries.
[2014-11-11 03:00:02,421] INFO MediaScannerService - Scanned media library with 2500 entries.
[2014-11-11 03:00:02,542] INFO MediaScannerService - Scanned media library with 2750 entries.
[2014-11-11 03:00:02,650] INFO MediaScannerService - Scanned media library with 3000 entries.
[2014-11-11 03:00:02,764] INFO MediaScannerService - Scanned media library with 3250 entries.
[2014-11-11 03:00:02,887] INFO MediaScannerService - Scanned media library with 3500 entries.
[2014-11-11 03:00:03,001] INFO MediaScannerService - Scanned media library with 3750 entries.
[2014-11-11 03:00:03,119] INFO MediaScannerService - Scanned media library with 4000 entries.
[2014-11-11 03:00:03,224] INFO MediaScannerService - Scanned media library with 4250 entries.
[2014-11-11 03:00:03,340] INFO MediaScannerService - Scanned media library with 4500 entries.
[2014-11-11 03:00:03,445] INFO MediaScannerService - Scanned media library with 4750 entries.
[2014-11-11 03:00:03,544] INFO MediaScannerService - Scanned media library with 5000 entries.
[2014-11-11 03:00:03,628] INFO MediaScannerService - Scanned media library with 5250 entries.
[2014-11-11 03:00:03,730] INFO MediaScannerService - Scanned media library with 5500 entries.
[2014-11-11 03:00:03,822] INFO MediaScannerService - Scanned media library with 5750 entries.
[2014-11-11 03:00:03,917] INFO MediaScannerService - Scanned media library with 6000 entries.
[2014-11-11 03:00:04,008] INFO MediaScannerService - Scanned media library with 6250 entries.
[2014-11-11 03:00:04,101] INFO MediaScannerService - Scanned media library with 6500 entries.
[2014-11-11 03:00:04,181] INFO MediaScannerService - Scanned media library with 6750 entries.
[2014-11-11 03:00:04,205] INFO MediaScannerService - Scanned media library with 6825 entries.
[2014-11-11 03:00:04,205] INFO MediaScannerService - Marking non-present files.
[2014-11-11 03:00:04,211] INFO MediaScannerService - Marking non-present artists.
[2014-11-11 03:00:04,212] INFO MediaScannerService - Marking non-present albums.
[2014-11-11 03:00:04,215] INFO MediaScannerService - Completed media library scan.
[2014-11-11 03:00:04,641] INFO PlaylistService - Starting playlist import.
[2014-11-11 03:00:04,641] INFO PlaylistService - Completed playlist import.
[2014-11-11 03:00:04,641] INFO PlaylistService - Starting playlist statistics update.
[2014-11-11 03:00:04,641] INFO PlaylistService - Completed playlist statistics update.
[2014-11-11 07:26:19,138] ERROR SearchService - Failed to search or random songs.
java.lang.OutOfMemoryError: Java heap space
   at org.apache.lucene.search.HitQueue.getSentinelObject(HitQueue.java:76)
   at org.apache.lucene.search.HitQueue.getSentinelObject(HitQueue.java:22)
   at org.apache.lucene.util.PriorityQueue.initialize(PriorityQueue.java:113)
   at org.apache.lucene.search.HitQueue.<init>(HitQueue.java:67)
   at org.apache.lucene.search.TopScoreDocCollector.<init>(TopScoreDocCollector.java:126)
   at org.apache.lucene.search.TopScoreDocCollector.<init>(TopScoreDocCollector.java:37)
   at org.apache.lucene.search.TopScoreDocCollector$InOrderTopScoreDocCollector.<init>(TopScoreDocCollector.java:42)
   at org.apache.lucene.search.TopScoreDocCollector$InOrderTopScoreDocCollector.<init>(TopScoreDocCollector.java:40)
   at org.apache.lucene.search.TopScoreDocCollector.create(TopScoreDocCollector.java:113)
   at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:169)
   at org.apache.lucene.search.Searcher.search(Searcher.java:98)
   at net.sourceforge.subsonic.service.SearchService.getRandomSongs(SearchService.java:254)
   at net.sourceforge.subsonic.controller.RESTController.getRandomSongs(RESTController.java:998)
   at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:483)
   at org.springframework.web.servlet.mvc.multiaction.MultiActionController.invokeNamedMethod(MultiActionController.java:473)
   at org.springframework.web.servlet.mvc.multiaction.MultiActionController.handleRequestInternal(MultiActionController.java:410)
   at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
   at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
   at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875)
   at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807)
   at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
   at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:501)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
   at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
   at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093)
   at org.mortbay.servlet.UserAgentFilter.doFilter(UserAgentFilter.java:81)
   at org.mortbay.servlet.GzipFilter.doFilter(GzipFilter.java:148)
   at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
   at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:265)

[2014-11-11 07:28:08,292] ERROR SearchService - Failed to search or random songs.
java.lang.OutOfMemoryError: Java heap space
   at org.apache.lucene.search.HitQueue.getSentinelObject(HitQueue.java:76)
   at org.apache.lucene.search.HitQueue.getSentinelObject(HitQueue.java:22)
   at org.apache.lucene.util.PriorityQueue.initialize(PriorityQueue.java:113)
   at org.apache.lucene.search.HitQueue.<init>(HitQueue.java:67)
   at org.apache.lucene.search.TopScoreDocCollector.<init>(TopScoreDocCollector.java:126)
   at org.apache.lucene.search.TopScoreDocCollector.<init>(TopScoreDocCollector.java:37)
   at org.apache.lucene.search.TopScoreDocCollector$InOrderTopScoreDocCollector.<init>(TopScoreDocCollector.java:42)
   at org.apache.lucene.search.TopScoreDocCollector$InOrderTopScoreDocCollector.<init>(TopScoreDocCollector.java:40)
   at org.apache.lucene.search.TopScoreDocCollector.create(TopScoreDocCollector.java:113)
   at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:169)
   at org.apache.lucene.search.Searcher.search(Searcher.java:98)
   at net.sourceforge.subsonic.service.SearchService.getRandomSongs(SearchService.java:254)
   at net.sourceforge.subsonic.controller.RESTController.getRandomSongs(RESTController.java:998)
   at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:483)
   at org.springframework.web.servlet.mvc.multiaction.MultiActionController.invokeNamedMethod(MultiActionController.java:473)
   at org.springframework.web.servlet.mvc.multiaction.MultiActionController.handleRequestInternal(MultiActionController.java:410)
   at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
   at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
   at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875)
   at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807)
   at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
   at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:501)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
   at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
   at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093)
   at org.mortbay.servlet.UserAgentFilter.doFilter(UserAgentFilter.java:81)
   at org.mortbay.servlet.GzipFilter.doFilter(GzipFilter.java:148)
   at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
   at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:265)

[2014-11-11 07:28:42,318] ERROR SearchService - Failed to search or random songs.
java.lang.OutOfMemoryError: Java heap space

[2014-11-11 08:37:41,392] WARN NetworkService - Failed to register web address.
java.lang.OutOfMemoryError: Java heap space

[2014-11-11 08:44:43,963] ERROR NetworkService - Error executing URLRedirectionTask: Java heap space
java.lang.OutOfMemoryError: Java heap space


Does anyone have any idea of something else I could try? This is so frustrating, I'd really like to get Subsonic working again.

-Bob

I was having this issue and it seemed to go away after I stopped having it scan folders nightly. I have not been adding that much recently so I have it scan weekly and if I add a bunch of media I just manually scan after uploading or adding via sftp. If it were to happen I feel that the time interval that I have to reboot from kernel updates supercedes the glitch it was having.

It also never hurts to set SSH up and run a client on a mobile device or use Putty on a computer. This way you can just sudo reboot the Bad Oscar when you have to. My server is headless for the most part.

Does this also happen with Subsonic 5.1.beta1? This has an updated version of a UPnP java library I'm using, and I'm suspecting it had a memory leak in the old version.

I'll check that out - I just noticed yesterday that there was a new beta posted. I have installed it, and will report back in a few days with my findings.

Thanks!

Well, it happened again - I installed the latest beta on Saturday, and it crashed sometime last night. I tried to paste the entire log file for completeness, but it's making my post too large so I attached the file instead.

Any other ideas?

Thanks,
Bob

Thanks!

I noticed this in the log:

[2015-01-03 13:42:55,155] ERROR DaoHelper - Failed to initialize database.
org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: The database is already in use by another process: org.hsqldb.persist.NIOLockFile@2d6451a6[file =/var/subsonic/db/subsonic.lck, exists=true, locked=false, valid=false, fl =null]: java.lang.Exception: checkHeartbeat(): lock file [/var/subsonic/db/subsonic.lck] is presumably locked by another process.

Try restarting and see if this error goes away. If not, try to remove the lock file /var/subsonic/db/subsonic.lck

After that - if you still have problems - the next step is to create a heap dump and send it to me for analysis. This is done by the "jmap" tool (part of Java), e.g., "jmap -F -dump:file=subsonic.hprof <pid>". This should be done after the server has run for some time, for the memory leak to take effect.

Sindre

Okay, I'll do that. I restarted the server, which seemed to get rid of the database initialization error. I did get some other errors on startup (license validation), but after restarting the subsonic service again I had no problem (It may have tried to start before the internet connection was up).

If/when it crashes again, I'll do a heap dump and send it along. Thanks for your help!

Okay, subsonic has crashed again (log is attached). I tried running jmap to try and do a heap dump, but it seems like it's not creating an output file. I do get an error message when I run it:

Code: Select all

bob@BobServer:~$ sudo jmap -F -dump:file=~/subsonic.hprof 2469
Attaching to process ID 2469, please wait...
Exception in thread "main" java.lang.reflect.InvocationTargetException
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at sun.tools.jmap.JMap.runTool(JMap.java:179)
   at sun.tools.jmap.JMap.main(JMap.java:110)
Caused by: java.lang.RuntimeException: Type "Klass*", referenced in VMStructs::localHotSpotVMStructs in the remote VM, was not present in the remote VMStructs::localHotSpotVMTypes table (should have been caught in the debug build of that VM). Can not continue.
   at sun.jvm.hotspot.HotSpotTypeDataBase.lookupOrFail(HotSpotTypeDataBase.java:362)
   at sun.jvm.hotspot.HotSpotTypeDataBase.readVMStructs(HotSpotTypeDataBase.java:253)
   at sun.jvm.hotspot.HotSpotTypeDataBase.<init>(HotSpotTypeDataBase.java:87)
   at sun.jvm.hotspot.bugspot.BugSpotAgent.setupVM(BugSpotAgent.java:568)
   at sun.jvm.hotspot.bugspot.BugSpotAgent.go(BugSpotAgent.java:494)
   at sun.jvm.hotspot.bugspot.BugSpotAgent.attach(BugSpotAgent.java:332)
   at sun.jvm.hotspot.tools.Tool.start(Tool.java:163)
   at sun.jvm.hotspot.tools.HeapDumper.main(HeapDumper.java:77)
   ... 6 more

...though I suspect this might be an error generated by jmap, rather than the output we're looking for. I tried running it without "sudo" (as the user who is the process owner) and got this output:

Code: Select all

Attaching to process ID 2469, please wait...
Error attaching to process: sun.jvm.hotspot.debugger.DebuggerException: Can't attach to the process

Any ideas based on that? Maybe there's something wrong with my Java installation?

-Bob

If you run Java 6, I recommend upgrading to Java 7. Maybe jmap works better then.

Sindre