Having some issues with multiple Ubuntu servers recently upgraded from CF2018 to CF2023, all using jdk-17.0.9, thread counts are growing until they hit their limits with cfsearch errors: java.lang.OutOfMemoryError: unable to create native thread: possibly out of memory or process/resource limits reached at java.base/java.lang.Thread.start0(Native Method) at java.base/java.lang.Thread.start(Thread.java:811) at org.apache.http.impl.client.IdleConnectionEvictor.start(IdleConnectionEvictor.java:96) at org.apache.http.impl.client.HttpClientBuilder.build(HttpClientBuilder.java:1238) at org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:337) at org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:348) at org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:286) at org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:273) at org.apache.solr.client.solrj.impl.HttpSolrClient.init(HttpSolrClient.java:204) at org.apache.solr.client.solrj.impl.HttpSolrClient$Builder.build(HttpSolrClient.java:968) at coldfusion.tagext.search.SolrUtils._getSolrClient(SolrUtils.java:1740) at coldfusion.tagext.search.SolrUtils.getSolrClient(SolrUtils.java:1688) at coldfusion.tagext.search.SolrUtils.getSolrDocCount(SolrUtils.java:270) at coldfusion.tagext.search.SearchTag.doSolrSearch(SearchTag.java:378) at coldfusion.tagext.search.SearchTag.doSearch(SearchTag.java:252) at coldfusion.tagext.search.SearchTag.doStartTag(SearchTag.java:190) at coldfusion.runtime.CfJspPage._emptyTcfTag(CfJspPage.java:5088) at cfsearch2ecfc1011696301$funcPERFORMSEARCH.runFunction The thread count before the errors start depends on the DefaultTasksMax setting on the server, where it's lower the errors start earlier, some have over 15,000 threads with a higher limit. Any advice on this is much appreciated.

Chris have you reached to cfsup@adobe.com about this migration issue?

Not yet but I will now thanks Mark.

Sounds good Chris. We'll get you sorted.

Support replied:

You could refer to this article:https://coldfusion.adobe.com/2018/03/coldfusion-performance-issues-and-optimization/

However, for this case, we would need the support contract to proceed further.