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Published Sep. 10, 2025

Intermittent performance issues caused by Journal Articles Display

Written By

Justin Mann

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Issue

  • After installing dxp-16, intermittent performance issues are being seen
  • Thread dumps taken during the performance issue show a number of threads with a similar format:
at java.util.regex.Pattern$Curly.match0(Pattern.java:4282)
at java.util.regex.Pattern$Curly.match(Pattern.java:4248)
at java.util.regex.Pattern$GroupHead.match(Pattern.java:4672)
at java.util.regex.Pattern$Loop.match(Pattern.java:4799)
at java.util.regex.Pattern$GroupTail.match(Pattern.java:4731)
at java.util.regex.Pattern$BmpCharProperty.match(Pattern.java:3812)
at java.util.regex.Pattern$Curly.match0(Pattern.java:4286)
at java.util.regex.Pattern$Curly.match(Pattern.java:4248)
at java.util.regex.Pattern$GroupHead.match(Pattern.java:4672)
at java.util.regex.Pattern$Loop.match(Pattern.java:4799)
at java.util.regex.Pattern$GroupTail.match(Pattern.java:4731)
at java.util.regex.Pattern$BmpCharProperty.match(Pattern.java:3812)
at java.util.regex.Pattern$Curly.match0(Pattern.java:4286)
at java.util.regex.Pattern$Curly.match(Pattern.java:4248)
at java.util.regex.Pattern$GroupHead.match(Pattern.java:4672)
...
at java.util.regex.Pattern$Start.match(Pattern.java:3475) 
at java.util.regex.Matcher.search(Matcher.java:1248) 
at java.util.regex.Matcher.find(Matcher.java:637) 
at com.liferay.journal.internal.transformer.DLPreviewURLRefreshTimestampTransformerListener._replace(DLPreviewURLRefreshTimestampTransformerListener.java:108) 
at com.liferay.journal.internal.transformer.DLPreviewURLRefreshTimestampTransformerListener.onOutput(DLPreviewURLRefreshTimestampTransformerListener.java:55) 
at com.liferay.journal.internal.transformer.JournalTransformer.doTransform(JournalTransformer.java:401) 
at com.liferay.journal.internal.transformer.JournalTransformer.transform(JournalTransformer.java:103) 
at com.liferay.journal.internal.util.JournalUtil.transform(JournalUtil.java:425) 
at com.liferay.journal.service.impl.JournalArticleLocalServiceImpl.getArticleDisplay(JournalArticleLocalServiceImpl.java:8030) 
at com.liferay.journal.service.impl.JournalArticleLocalServiceImpl.getArticleDisplay(JournalArticleLocalServiceImpl.java:2580) 
at sun.reflect.GeneratedMethodAccessor314.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:498) 
at com.liferay.portal.spring.aop.AopMethodInvocationImpl.proceed(AopMethodInvocationImpl.java:50) 
at com.liferay.portal.spring.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:69) 
at com.liferay.portal.spring.aop.AopMethodInvocationImpl.proceed(AopMethodInvocationImpl.java:57) 
at com.liferay.portal.monitoring.internal.aop.ServiceMonitorAdvice.invoke(ServiceMonitorAdvice.java:79) 
at com.liferay.portal.spring.aop.AopMethodInvocationImpl.proceed(AopMethodInvocationImpl.java:57) 
at com.liferay.portal.spring.aop.AopInvocationHandler.invoke(AopInvocationHandler.java:49) 
at com.sun.proxy.$Proxy749.getArticleDisplay(Unknown Source) 
at com.liferay.journal.internal.util.JournalContentImpl.getArticleDisplay(JournalContentImpl.java:410) 
at com.liferay.journal.internal.util.JournalContentImpl.getDisplay(JournalContentImpl.java:263) 
at com.liferay.journal.internal.util.JournalContentImpl.getDisplay(JournalContentImpl.java:304) 
at com.liferay.journal.content.web.internal.display.context.JournalContentDisplayContext.getArticleDisplay(JournalContentDisplayContext.java:212) 
at com.liferay.journal.content.web.internal.display.context.JournalContentDisplayContext.isShowArticle(JournalContentDisplayContext.java:850) 
at com.liferay.journal.content.web.internal.display.context.JournalContentDisplayContext. (JournalContentDisplayContext.java:992) 
at com.liferay.journal.content.web.internal.display.context.JournalContentDisplayContext.create(JournalContentDisplayContext.java:120) 
at com.liferay.journal.content.web.internal.portlet.JournalContentPortlet.render(JournalContentPortlet.java:187) 
at com.liferay.portlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:127)
....

Environment

  • Liferay DXP 7.2 with dxp-16 installed

Resolution

  • LPS-139726 introduces a performance regression: When DLPreviewURLRefreshTimestampTransformerListener is executing it can consume a lot of CPU leading to page loading delays and other intermittent performance issues
  • This issue was fixed with LPS-148916 and can be added to a hotfix to resolve this issue.

Additional Information

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