why memory usage is so different between sum of RSS and free?
Issue
Server has 528G-sized memory, "free -m" indicates 404G of memory has been using by server now, Customer checked memory usage is 120G from sum of rss,
404G(buffers/cache used) -120G(from RSS sum)- 70G(used by ramdisk/tmpfs)=202G,
where have the 202G-sized memory gone?
Environment
Red Hat Enterprise Linux 5 All versions
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.