increased a lot with nocacheflush=1,
so maybe there
is other cache involved?
Thanx.
--
Da: Albert Lee
A: Discussion list for OpenIndiana
Data: 8 ottobre 2011 0.36.02 CEST
Oggetto: Re: [OpenIndiana-discuss] use zfs_noca
On Thu, Oct 6, 2011 at 5:45 AM, Gabriele Bulfon wrote:
> Hi,
> NFS on zfs can be quite a pain with large number of small files.
> After playing around it, I discovered this zfs_nocacheflush flag bringing me
> back to high
> performances on NFS.
> Questions:
> - How much unsafe is this?
This is c
I believe the flag you are setting, without looking, controls whether
ZFS flushes the disk write cache, and not a cache of ZFS's.
It's moderately unsafe - what ZFS does is that it writes blocks to the
hard drives, then issues a command to force the drives to guarantee
the write caches are flushed
Hi,
NFS on zfs can be quite a pain with large number of small files.
After playing around it, I discovered this zfs_nocacheflush flag bringing me
back to high
performances on NFS.
Questions:
- How much unsafe is this?
- How can I check zfs caching status, to understand really what is staying on
t
