> Before you do a dd test try first to do:
> echo zfs_vdev_max_pending/W0t1 | mdb -kw
I did actually try this about a month ago when I first made an attempt at
figuring this out. Changing the pending values did make some small difference,
but even the best was far, far short of acceptable perfo
> Is this minutes:seconds.millisecs ? if so, you're looking at 3-4MB/s ..
> I would say something is wrong.
Ack, you're right.
I was concentrating so much on the WTFOMG problem that I completely missed the
WTF problem.
In other news, with the Poweredge put into "SCSI" mode instead of "RAID" mod
I've got a mail machine here that I built using ZFS boot/root. It's been
having some major I/O performance problems, which I posted once before... but
that post seems to have disappeared.
Now I've managed to obtain another identical machine, and I've built it in the
same way as the original.
I've got Solaris 10 U6 with a ZFS boot/root installed on a Dell 1850 here,
patched up as of this morning (kernel 141415-10). The system is running with
hardware-mirrored disks, via the LSI MegaRAID controller, a PERC 4e/Si. 4G of
RAM, one dual-core 3.4GHz CPU.
The system is a simple mail hub,
