HP-UX Memory File System (MemFS) 2.0

Introducing HP-UX Memory File System (MemFS)
Application Areas for HP-UX Memory File System
Chapter 1 11
Figure 1-1 MemFS Backing Store
Application Areas for HP-UX Memory File System
Applications that will benefit most from HP-UX MemFS are those that perform mostly
metadata intensive operations like creating and deleting small files and directories. For
example compilers, editors and sorting applications. MemFS never writes metadata for files
to disk, so directory and file manipulation is always a performance gain. Applications can also
interact with MemFS files using the mmap interface.
Some other usage guidelines are:
• Use MemFS only for temporary files
• Avoid too many files in a directory. Distribute the files evenly across a larger number of
directories. If all files are accessed simultaneously limit the number of files to about 100
per directory or so.