Memory File System (MemFS) 1.0 for HP-UX 11i v3

Installing, Configuring, Tuning, and Removing HP-UX Memory File System
Known Problems and Other Limitations
Chapter 2 23
Known Problems and Other Limitations
Known Problems
• On large memory usage of MemFS file system instances, such as when MemFS pages
occupy memory equal to the total RAM, the system may experience slow responses.
Other Limitations
• Since many HP-UX applications store critical data in /tmp, not being able to recover /tmp
can cause serious damage to the consistency of such applications. HP recommends that
you not use MemFS to mount /tmp and any file systems which contain critical data that
require consistency.
• A limitation with MemFS and Ignite-UX (and other products) is that there is no support
for /tmp or for /var/tmp as MemFS file systems. MemFS file systems should be used only
to hold application transient files. The file system and all its contents will be lost with an
unmount or reboot operation. Ignite-UX uses the information stored in /tmp during the
install process and therefore the /tmp file systems cannot be MemFS based.