Neil Perrin wrote:
We are currently working on separate log devices such as disk and nvram.
This should help with both NFS and DB performance.
It also makes things interest from the zfs-crypto view point. It
means that it would allow a configuration where we don't do encryption
on the ZIL
Erik Trimble wrote:
Just a thought: would it be theoretically possible to designate some
device as a system-wide write cache for all FS writes? Not just ZFS,
but for everything... In a manner similar to which we currently use
extra RAM as a cache for FS read (and write, to a certain
On Thu, 2007-01-11 at 10:35 -0800, Richard Elling wrote:
The product was called Sun PrestoServ. It was successful for benchmarking
and such, but unsuccessful in the market because:
+ when there is a failure, your data is spread across multiple
fault domains
+ it is
Hello all,
Just my two cents on the issue. The Thumper is proving to be a
terrific database server in all aspects except latency. While the
latency is acceptable, being able to add some degree of battery-backed
write cache that ZFS could use would be phenomenal.
Best Regards,
Jason
On 1/11/07,
I know there's been much discussion on the list lately about getting HW
arrays to use (or not use) their caches in a way that helps ZFS the most.
Just yesterday I started seeing articles on NAND Flash Drives, and I
know other Solid Stae Drive technologies have been around for a while
and many
I'm currently working on putting the ZFS intent log on separate devices
which could include seperate disks and nvram/solid state devices.
This would help any application using fsync/O_DSYNC - in particular
DB and NFS. From protoyping considerable peformanace improvements have
been seen.
Neil.
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
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
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,
