How do I restrict or modify size of /dev/shm?

Updated -

If an application is POSIX compliant or it uses GLIBC (2.2 and above) on a Red Hat Enterprise Linux system, it will usually use the /dev/shm for shared memory (shm_open, shm_unlink). /dev/shm is a temporary filesystem (tmpfs) which is mounted from /etc/fstab. Hence the standard options like "size" supported for tmpfs can be used to increase or dec...

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In
Close

Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.