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Date:      Wed, 18 Jun 2003 18:58:21 -0400
From:      Chuck Swiger <cswiger@mac.com>
To:        freebsd-performance@freebsd.org
Subject:   Re: freebsd-performance Digest, Vol 4, Issue 7
Message-ID:  <3EF0EE8D.8040806@mac.com>
In-Reply-To: <3EF0EABC.E9D75759@lbl.gov>
References:  <20030614190033.7F0DE37B407@hub.freebsd.org> <20030615091254.M85497@bluhayz.org> <3EF0B507.2B1B6FDF@lbl.gov> <002101c335d9$f6664a20$812a40c1@PETEX31> <3EF0EABC.E9D75759@lbl.gov>

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Jin Guojun [DSD] wrote:
[ ... ]
> But this seems to have different problem. At least write to RAID 1 requires
> twice bus bandwidth for soft RAID 1. So, read should be faster than write.
> But current read is 67 MB/s, write is 10 MB/s. Something is not working.

What is the write performance to a bare hard drive?

I'd expect your write performance to be somewhat higher, true, but your drives 
read at 33 MB/s, and write at 15 MB/s, your write performance is nominal.

- -- 
- -Chuck
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