[LU-4793] CLIO per-page allocations use size-1024 slab

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Fix Version/s: Lustre 2.6.0
• Severity: 3
• Assignee: Jinshan Xiong (Inactive)
• Reporter: Andreas Dilger

Description

Running some simple read and write tests using "dd" to large files I see a huge amount of memory allocated by the size-1024 slab - about 1/4 if all RAM of the system.

The size of the per-page allocation must be reduced in some manner, since this is far to much memory wasted for CLIO overhead.