Hi Paul,
do you know when the slowness started for you? Could it in fact be
related to bnodes? If so, could you try with a model that does not use
bnodes? Also what is the physical storage model that you interface via
Sesame (maybe the bnode handling is different on each platform)? In
general bnodes are rather fragile when it comes to databases.
Thanks
Holger
On 5/29/2012 23:04, PaulZH wrote:
Context:
Sesame 2.6.5
TBCME Version: 3.6.0.v20120419-1246R
on Mac Mac OS X Lion 10.7.4 (11E53)
with Java version "1.7.0_04"
Java(TM) SE Runtime Environment (build 1.7.0_04-b21)
Java HotSpot(TM) 64-Bit Server VM (build 23.0-b21, mixed mode)
All actions (writing, querying) to a remote sesame happen very slow.
- Writing a few new triples takes 10 minutes.
- Following query
SELECT *
WHERE {
?a a vl:School.
?a vcard:adr ?address.
?address vcard:locality ?locality.
FILTER (?locality = "Mortsel")
}
which is carried out in less than a second within the sesame
workbench, takes 10 minutes in TBCME.
One thing I notice is that errors are thrown related to blank nodes:
null
Warning
Tue May 29 14:37:09 CEST 2012
Failed to convert node: @node16tvbnmeqx27438
java.lang.IllegalArgumentException: Not a valid (absolute) URI:
@node16tvbnmeqx27438
at org.openrdf.model.impl.URIImpl.setURIString(URIImpl.java:68)
at org.openrdf.model.impl.URIImpl.<init>(URIImpl.java:57)
at
org.openrdf.model.impl.ValueFactoryImpl.createURI(ValueFactoryImpl.java:
38)
at org.topbraid.sesame2.mapping.Jena2Sesame.getURI(Jena2Sesame.java:
76)
at org.topbraid.sesame2.mapping.Jena2Sesame.getValue(Jena2Sesame.java:
87)
at
org.topbraid.sesame2.graph.RepositoryGraph.graphBaseFind(RepositoryGraph.java:
82)
at com.hp.hpl.jena.graph.impl.GraphBase.find(GraphBase.java:240)
at
org.topbraid.core.graph.DelegatingGraph.delegateFind(DelegatingGraph.java:
243)
at org.topbraid.core.graph.CachingGraph.addToCache(CachingGraph.java:
145)
at
org.topbraid.core.graph.AbstractCachingGraph.find(AbstractCachingGraph.java:
178)
at
org.topbraid.core.graph.AbstractCachingGraph.find(AbstractCachingGraph.java:
168)
at org.topbraid.core.graph.DelegatingGraph.find(DelegatingGraph.java:
113)
at org.topbraid.core.graph.BufferingGraph.find(BufferingGraph.java:
380)
at org.topbraid.core.graph.BufferingGraph.find(BufferingGraph.java:
402)
at
com.hp.hpl.jena.graph.compose.MultiUnion.multiGraphFind(MultiUnion.java:
187)
at
com.hp.hpl.jena.graph.compose.MultiUnion.graphBaseFind(MultiUnion.java:
166)
at com.hp.hpl.jena.graph.impl.GraphBase.find(GraphBase.java:240)
at com.hp.hpl.jena.graph.impl.GraphBase.graphBaseFind(GraphBase.java:
260)
at com.hp.hpl.jena.graph.impl.GraphBase.find(GraphBase.java:257)
at
com.hp.hpl.jena.rdf.model.impl.ModelCom.listStatements(ModelCom.java:
378)
at
com.hp.hpl.jena.rdf.model.impl.ModelCom.listStatements(ModelCom.java:
383)
at
com.hp.hpl.jena.rdf.model.impl.ResourceImpl.listProperties(ResourceImpl.java:
157)
at
org.topbraidcomposer.ui.ToolTipTexts.getToolTipText(ToolTipTexts.java:
38)
at org.topbraidcomposer.widgets.row.editors.AbstractEditorText
$10.handle(AbstractEditorText.java:487)
at
org.topbraidcomposer.ui.text.StyledTextNavigator.updateRange(StyledTextNavigator.java:
325)
at
org.topbraidcomposer.widgets.row.editors.AbstractEditorText.updateToolTipText(AbstractEditorText.java:
484)
at org.topbraidcomposer.widgets.row.editors.AbstractEditorText
$3.mouseMove(AbstractEditorText.java:139)
at
org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:
211)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4125)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1457)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1480)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1465)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1270)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:
3971)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3610)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:
2696)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:
332)
at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:
667)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:
149)
at
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:
123)
at
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:
196)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:
110)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:
79)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:
344)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:
179)
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 org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
Anything else I can investigate?
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