MemFS 2.0 - A Memory-based File System on HP-UX 11iv3

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Figure 2. Postmark benchmark results for 10,000 simultaneous files and 100 subdirectories
The file systems under test were:
MemFS on HP-UX 11iv3 of size=2GB. memfs_metamax set to 30%.
tmpfs on Red Hat Linux 2.4.217
tmpfs on Red Hat Linux 2.6
MemFS on HP-UX 11iv2 of size=2GB. dbc_max_pct was set to 50% (4GB)
RAMdisk on HP-UX 11iv3: VxFS was the base file system installed on it using the delaylog
mount option. VxFS 4.1 was used.
Figure 3 shows Postmark results operating on 10,000 simultaneous files in a single directory.
Tmpfs on recent release of Linux, 2.6, shows the best performance, which can be attributed to a
light operating system design. But MemFS performs in close proximity to it and better than the
tmpfs on previous release of Linux, 2.4.217, MemFS on HP-UX 11iv2 and also RAMdisk.