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hi,

i have two systems, A (Solaris 10 update 5) and B (Solaris 10 update 6).  i'm
using 'zfs send -i' to replicate changes on A to B.  however, the 'zfs recv' on
B is running extremely slowly.  if i run the zfs send on A and redirect output
to a file, it sends at 2MB/sec.  but when i use 'zfs send ... | ssh B zfs
recv', the speed drops to 200KB/sec.  according to iostat, B (which is
otherwise idle) is doing ~20MB/sec of disk reads, and very little writing.

i don't believe the problem is ssh, as the systems are on the same LAN, and
running 'tar' over ssh runs much faster (20MB/sec or more).

is this slowness normal?  is there any way to improve it?  (the idea here is to
use B as a backup of A, but if i can only replicate at 200KB/s, it's not going
to be able to keep up with the load...)

both systems are X4500s with 16GB ram, 48 SATA disks and 4 2.8GHz cores.

thanks,
river.
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