Re: [HPDD-discuss] MDS dentry slabinfo
it’s not that easy now.. we do not cache individual directory entries (like dcache does)
anymore.
which is probably subject to discussion and further optimization. but buffer cache is
still used to
hold directory blocks.
probably it makes sense to watch pure MDS first (i.e. do not use Lustre client on MDS
node).
thanks, Alex
On Dec 4, 2013, at 5:49 PM, Daire Byrne <daire(a)dneg.com> wrote:
Alexey,
So is there another structure that dirs are cached in that is effected by
vfs_cache_pressure=0? I'm trying to understand why the server ran out of memory even
though ldiskfs_inode_cache was only 131G at the time (in a 400G server). I'm not
currently monitoring all slabinfo entries so I can't say which others had grown very
large.
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