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Date:      Tue, 12 Feb 2008 12:32:40 +0100
From:      Ivan Voras <ivoras@freebsd.org>
To:        freebsd-current@freebsd.org
Subject:   Re: Disappointing speed with ZFS
Message-ID:  <fos01d$5km$1@ger.gmane.org>
In-Reply-To: <C5015455-7992-4678-848E-98DDE99F6FF5@lexasoft.ru>
References:  <9DA6FFCD-11DB-4580-9314-52B0885351D8@lexasoft.ru>	<fopmlp$qeh$1@ger.gmane.org>	<0EF3CEE6-6F38-4713-A245-4354D34AFE75@lexasoft.ru>	<9bbcef730802110921i6af516b9t855a4065884cc64b@mail.gmail.com>	<79D93B0C-589E-41C6-A952-6D573297D9F9@lexasoft.ru>	<foq23b$9j1$1@ger.gmane.org>	<DD62C8A1-D508-497A-AFF8-008E54538280@lexasoft.ru>	<foq37a$e1r$1@ger.gmane.org> <C5015455-7992-4678-848E-98DDE99F6FF5@lexasoft.ru>

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Alexey Tarasov wrote:
>       tty             ad4              ad5              ad6            =
 cpu
>  tin tout  KB/t tps  MB/s   KB/t tps  MB/s   KB/t tps  MB/s  us ni sy i=
n id
>    0  347  7.36   1  0.01  57.35  43  2.42  42.84  44  1.84   1  0  1  =
0 98
>    0  606  0.00   0  0.00  58.62  31  1.76  63.02 246 15.14   0  0  3  =
0 97
>    2 5334  0.00   0  0.00  57.14   7  0.37  64.00 355 22.20   0  0  2  =
0 97
>    2 3194  0.00   0  0.00   0.00   0  0.00  63.35 295 18.26   0  0  2  =
1 97
>    0  148  0.00   0  0.00   0.00   0  0.00  63.90 336 20.97   0  0  0  =
1 99
>    0  453  0.00   0  0.00  55.87  87  4.72  64.00 290 18.14   1  0  3  =
0 96

Sorry, can't help you. I was expecting to see a lot of small
transactions, indicating seeking across the file system, but the numbers
seem normal enough.

Is the drive & ZFS topology "normal" - you don't perhaps have a zpool
made of multiple partitions/slices on the same drive? Can you send the
output of "zpool status"?


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