On Wed, Sep 08, 2004 at 10:21:17PM +0200, Jakob Oestergaard wrote:
Would *you* base a production environment on that ? ;)
I might if I used ext3, they didn't look all the bad but I only
glanced over them.
2.5G RAM IIRC - but slab is in lowmem so the machine will barf when
it reaches ~850MB slab.
Ick. This is a 'known problem' that some people hit. Basically you
get bazillions of dentries as the backup runs (or whatever, find /fs
-noleaf, works pretty well too) which consume slab. What's worse is
that they pin other slab objects used by XFS. Checking 'bloatmeter'
on my desktop I see:
xfs_inode: 90327KB 115723KB 78.5
linvfs_icache: 84445KB 106528KB 79.27
dentry_cache: 24118KB 62147KB 38.80
This shows for me the largest slab users are xfs_inode and
linvfs_icache, these can't be freed until the dentry_cache objects
that pin them are also freed (the slab-freeing logic isn't aware of
this and I'm not sure that even if it were what would help much even
if it were but I always meant to test if it would help).