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Re: [equinox-dev] performance problems with Eclipse startup due to long DirectoryWatcher.poll() (25 minutes!)
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Thanks Pascal and Simon.
What concerns me is that this slow operation happens in
p2.reconciler.dropins Activator.start(), actually stopping the startup
of whole Eclipse app.
My other problem is that this is not the only case. There are other, not
yet clear or documented enough that cause slow startup - I'm trying to
get stacktraces for them too.
But it may be that most of p2 operations are currently slow for large
installations.
So assuming the the metadata write is slowing us so much, could it be
realized as a separate thread, or moved out from Activator.start() sequence?
Do you think it has any sense, or maybe there are other services that
depend on the metadata written to disk?
Jacek
Pascal Rapicault pisze:
Some bug fixes got made in 3.4.2, but the main problem is that p2 has
to generate metadata on the fly which is a non trivial operation IO-wise.
I would recommend you to generate p2 metadata for all of those 3000
bundles and install them properly using the p2 director.
One bug report about performance of the reconciler is
https://bugs.eclipse.org/bugs/show_bug.cgi?id=251561
Inactive hide details for Jacek Pospychała ---01/08/2009 11:19:42
AM---Hi I have an Eclipse 3.4.1 install (of ~3000 plug-ins),Jacek
Pospychała ---01/08/2009 11:19:42 AM---Hi I have an Eclipse 3.4.1
install (of ~3000 plug-ins), that's starting for
From:
Jacek Pospychała <Jacek.Pospychala@xxxxxxxxxxxxxxxx>
To:
equinox-dev@xxxxxxxxxxx
Date:
01/08/2009 11:19 AM
Subject:
[equinox-dev] performance problems with Eclipse startup due to long
DirectoryWatcher.poll() (25 minutes!)
------------------------------------------------------------------------
Hi
I have an Eclipse 3.4.1 install (of ~3000 plug-ins), that's starting for
about 25minutes. Most of this time is spent in
org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.start()
calling (indirectly) DirectoryWatcher.poll().
Looking at several coredumps collected during this startup time it seems
that all threads wait() or sleep() and only "Start Level Event Dispatcher"
is working. All the time this thread is writing some XML. (See it's
stacktrace below)
Is this expected behaviour? What XML is actually written?
I also notice that p2 directory has about 600mb.
I was looking for bugs with similar stack traces, but with no luck so
far - should I open new?
thanks
Jacek
stacktrace:
3XMTHREADINFO "Start Level Event Dispatcher" TID:0x4274C100,
j9thread_t:0x0001BA70, state:CW, prio=5
3XMTHREADINFO1 (native thread ID:0x890, native priority:0x5,
native policy:UNKNOWN)
4XESTACKTRACE at java/io/OutputStreamWriter.write(Bytecode
PC:71(Compiled Code))
4XESTACKTRACE at java/io/PrintWriter.write(Bytecode
PC:71(Compiled Code))
4XESTACKTRACE at java/io/PrintWriter.write(Bytecode
PC:71(Compiled Code))
4XESTACKTRACE at java/io/PrintWriter.print(Bytecode
PC:71(Compiled Code))
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/persistence/XMLWriter.print(Bytecode
PC:71(Compiled Code))
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/persistence/XMLWriter.start(Bytecode
PC:71(Compiled Code))
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/persistence/XMLWriter.writeProperty(Bytecode
PC:71(Compiled Code))
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/persistence/XMLWriter.writeProperties(Bytecode
PC:70(Compiled Code))
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/persistence/XMLWriter.writeProperties(Bytecode
PC:4(Compiled Code))
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/artifact/repository/simple/SimpleArtifactRepositoryIO$Writer.writeArtifacts(Bytecode
PC:102(Compiled Code))
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/artifact/repository/simple/SimpleArtifactRepositoryIO$Writer.write(Bytecode
PC:77(Compiled Code))
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/artifact/repository/simple/SimpleArtifactRepositoryIO.write(Bytecode
PC:25)
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/artifact/repository/simple/SimpleArtifactRepository.save(Bytecode
PC:214(Compiled Code))
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/artifact/repository/simple/SimpleArtifactRepository.save(Bytecode
PC:24)
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/artifact/repository/simple/SimpleArtifactRepository.removeDescriptor(Bytecode
PC:9)
4XESTACKTRACE at
org/eclipse/equinox/internal/provisional/p2/directorywatcher/RepositoryListener.synchronizeArtifactRepository(Bytecode
PC:105)
4XESTACKTRACE at
org/eclipse/equinox/internal/provisional/p2/directorywatcher/RepositoryListener.stopPoll(Bytecode
PC:92)
4XESTACKTRACE at
org/eclipse/equinox/internal/provisional/p2/directorywatcher/DirectoryWatcher.stopPoll(Bytecode
PC:34)
4XESTACKTRACE at
org/eclipse/equinox/internal/provisional/p2/directorywatcher/DirectoryWatcher.poll(Bytecode
PC:9)
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/extensionlocation/ExtensionLocationArtifactRepository.ensureInitialized(Bytecode
PC:80)
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/extensionlocation/ExtensionLocationArtifactRepository.getProperties(Bytecode
PC:1)
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/artifact/repository/ArtifactRepositoryManager.addRepository(Bytecode
PC:108)
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/artifact/repository/ArtifactRepositoryManager.loadRepository(Bytecode
PC:106)
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/artifact/repository/ArtifactRepositoryManager.loadRepository(Bytecode
PC:5)
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/reconciler/dropins/Activator.loadArtifactRepository(Bytecode
PC:66)
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/reconciler/dropins/PlatformXmlListener.synchronizeConfiguration(Bytecode
PC:398)
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/reconciler/dropins/PlatformXmlListener.stopPoll(Bytecode
PC:31)
4XESTACKTRACE at
org/eclipse/equinox/internal/provisional/p2/directorywatcher/DirectoryWatcher.stopPoll(Bytecode
PC:34)
4XESTACKTRACE at
org/eclipse/equinox/internal/provisional/p2/directorywatcher/DirectoryWatcher.poll(Bytecode
PC:9)
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/reconciler/dropins/Activator.watchConfiguration(Bytecode
PC:224)
4XESTACKTRACE at
org/eclipse/equinox/internal/p2/reconciler/dropins/Activator.start(Bytecode
PC:127)
4XESTACKTRACE at
org/eclipse/osgi/framework/internal/core/BundleContextImpl$2.run(Bytecode
PC:58)
4XESTACKTRACE at
java/security/AccessController.doPrivileged(Bytecode PC:3(Compiled Code))
4XESTACKTRACE at
org/eclipse/osgi/framework/internal/core/BundleContextImpl.startActivator(Bytecode
PC:22)
4XESTACKTRACE at
org/eclipse/osgi/framework/internal/core/BundleContextImpl.start(Bytecode
PC:23)
4XESTACKTRACE at
org/eclipse/osgi/framework/internal/core/BundleHost.startWorker(Bytecode
PC:381)
4XESTACKTRACE at
org/eclipse/osgi/framework/internal/core/AbstractBundle.resume(Bytecode
PC:22(Compiled Code))
4XESTACKTRACE at
org/eclipse/osgi/framework/internal/core/Framework.resumeBundle(Bytecode
PC:35(Compiled Code))
4XESTACKTRACE at
org/eclipse/osgi/framework/internal/core/StartLevelManager.resumeBundles(Bytecode
PC:91)
4XESTACKTRACE at
org/eclipse/osgi/framework/internal/core/StartLevelManager.incFWSL(Bytecode
PC:33)
4XESTACKTRACE at
org/eclipse/osgi/framework/internal/core/StartLevelManager.doSetStartLevel(Bytecode
PC:236)
4XESTACKTRACE at
org/eclipse/osgi/framework/internal/core/StartLevelManager.dispatchEvent(Bytecode
PC:45)
4XESTACKTRACE at
org/eclipse/osgi/framework/eventmgr/EventManager.dispatchEvent(Bytecode
PC:39(Compiled Code))
4XESTACKTRACE at
org/eclipse/osgi/framework/eventmgr/EventManager$EventThread.run(Bytecode
PC:26)
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