Could this ability (separate ZIL device) coupled with an SSD give
something like a Thumper the write latency benefit of battery-backed
write cache?
Best Regards,
Jason
On 1/5/07, Neil Perrin <[EMAIL PROTECTED]> wrote:
Robert Milkowski wrote On 01/05/07 11:45,:
> Hello Neil,
>
> Friday, January 5, 2007, 4:36:05 PM, you wrote:
>
> NP> I'm currently working on putting the ZFS intent log on separate devices
> NP> which could include seperate disks and nvram/solid state devices.
> NP> This would help any application using fsync/O_DSYNC - in particular
> NP> DB and NFS. From protoyping considerable peformanace improvements have
> NP> been seen.
>
> Can you share any results from prototype testing?
I'd prefer not to just yet as I don't want to raise expectations unduly.
When testing I was using a simple local benchmark, whereas
I'd prefer to run something more official such as TPC.
I'm also missing a few required features in the protoype which
may affect performance.
Hopefully I can can provide some results soon, but even those will
be unoffical.
Neil.
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