Excessive printing to console may lead to logging of messages "rcu_sched detected stalls on CPUs/tasks"
Issue
- What is the meaning and significance of the kernel messages found in the system log and on the console
INFO: rcu_sched detected stalls on CPUs/tasks: { XXX} (detected by XXX, t=X jiffies, g=X, c=X, q=X)
- In particularly severe cases the console is flooded by these messages and the system is prevented from successful boot.
Environment
- Red Hat Enterprise Linux 7
- Systems with very high CPU cores count
- Elevated kernel logging levels
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.
Close
Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.