Le 22 mai 07 à 01:21, Albert Chin a écrit :
On Mon, May 21, 2007 at 06:11:36PM -0500, Nicolas Williams wrote:
On Mon, May 21, 2007 at 06:09:46PM -0500, Albert Chin wrote:
But still, how is tar/SSH any more multi-threaded than tar/NFS?
It's not that it is, but that NFS sync semantics and ZFS sync
semantics conspire against single-threaded performance.
What's why we have "set zfs:zfs_nocacheflush = 1" in /etc/system. But,
that's only helps ZFS. Is there something similar for NFS?
With this set, we also reach a state where the NFS/ZFS/NVRAM works as
it should.
So it should speed things up.
The problem is :
Once it starts to go in /etc/system it will spread. Customers with
no NVRAM storage will use it and
some will experience pool corruption.
-r
--
albert chin ([EMAIL PROTECTED])
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