NFS reads vs. writes

[Paul Kraus]

On Jan 4, 2016, at 22:40, Adam Vande More <amvandemore at gmail.com> wrote:

> On Mon, Jan 4, 2016 at 9:06 PM, Paul Kraus <paul at kraus-haus.org> wrote:
> 

>> I have a file server that I am going through the task of optimizing for
>> NFS traffic (to store VM images). My first attempt, because I knew about
>> the need for an SSD based SLOG for the ZIL was using a pair of Intel 535
>> series SSD’s. The performance with the SLOG/ZIL on the SSD was _worse_.
>> Turns out that those SSD’s have poor small block (8 KB) random write
>> performance (not well advertised). So I asked for advice for choosing a
>> _fast_ SSD on the OpenZFS list and had a number of people recommend the
>> Intel DC-Sxxxx series of SSDs.

> Something like zeusram or ddrdrive is probably going to yield the most
> preformant solution for zfs sync writes.

Agreed, but I don’t have the budget for that :-(

--
Paul Kraus
paul at kraus-haus.org