Improving ZFS performance for large directories

[Nikolay Denev]

On Jan 30, 2013, at 5:19 PM, Kevin Day <toasty at dragondata.com> wrote:
> 
> On Jan 30, 2013, at 4:36 AM, Nikolay Denev <ndenev at gmail.com> wrote:
>> 
>> 
>> What are your : vfs.zfs.arc_meta_limit and vfs.zfs.arc_meta_used sysctls?
>> Maybe increasing the limit can help?
> 
> 
> vfs.zfs.arc_meta_limit: 8199079936
> vfs.zfs.arc_meta_used: 13965744408
> 
> Full output of zfs-stats: […snipped…]

Looks like you can try to increase arc_meta_limit to be let's say : half of arc_max. (16398159872 in your case).