clement escoffier ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiMmVhMGUzN2M2... ) / Improvement ( https://hibernate.atlassian.net/browse/HHH-17005?atlOrigin=eyJpIjoiMmVhMG... ) HHH-17005 ( https://hibernate.atlassian.net/browse/HHH-17005?atlOrigin=eyJpIjoiMmVhMG... ) Remove pinning in PooledLoOptimizer ( https://hibernate.atlassian.net/browse/HHH-17005?atlOrigin=eyJpIjoiMmVhMG... ) Issue Type: Improvement Assignee: Unassigned Components: hibernate-core Created: 27/Jul/2023 00:13 AM Priority: Major Reporter: clement escoffier ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) When using Hibernate ORM with virtual threads, writes are pinning the carrier thread because of the synchronization happening in PooledLoOptimizer. This happens because some I/O are performed while holding this monitor lock. We could remove the “synchronized” method to work around that limitation and use a Java lock instead. Java locks are virtual thread friendly. They do not pin the carrier thread when an I/O is executed when holding the lock. ( https://hibernate.atlassian.net/browse/HHH-17005#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-17005#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100233- sha1:63d45e1 )