> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
> boun...@opensolaris.org] On Behalf Of ian W
> 
> Hope you can still help here. Solaris 11 Express.
> x86 platform E6600 with 6GB of RAM
> 
> I have a fairly new S11E box Im using as a file server.
> 3x1.5TB HDD's in a raidz pool.

Just so you know, you're calling that "fairly new" but a Core2 Duo processor
and 6G of ram isn't the same class of machine this is meant for.  Still,
that should be irrelevant, cuz you should be able to fully max out a 1G
ethernet easily enough.


> When I first set it up I was getting 110MB/sec writes across gigabit
network
> via SMB shares.
> 
> I noticed recently that write rate has dropped off and through testing now
I
> am getting 35MB/sec writes. The pool is around 50-60% full.

How, precisely are you performing your test?  Step by step...
What do you get if you start "iostat 5" a minute before the test and keep it
running till a little after the test?

What does "zpool status" tell you?

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