Chad Mynhier writes:
On 4/27/07, Erblichs [EMAIL PROTECTED] wrote:
Ming Zhang wrote:
Hi All
I wonder if any one have idea about the performance loss caused by COW
in ZFS? If you have to read old data out before write it to some other
place, it involve disk seek.
On Fri, 2007-04-27 at 11:01 +0200, Roch - PAE wrote:
Chad Mynhier writes:
On 4/27/07, Erblichs [EMAIL PROTECTED] wrote:
Ming Zhang wrote:
Hi All
I wonder if any one have idea about the performance loss caused by COW
in ZFS? If you have to read old data out
Ming,
Lets take a pro example with a minimal performance
tradeoff.
All FSs that modify a disk block, IMO, do a full
disk block read before anything.
If doing a extended write and moving to a
larger block size with COW you give yourself
the
