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Date:      Tue, 19 Jan 2010 12:50:13 +1030
From:      "Daniel O'Connor" <>
Cc:        "O. Hartmann" <>, Morgan =?utf-8?q?Wesstr=C3=B6m?= <>,
Subject:   Re: immense delayed write to file system (ZFS and UFS2), performance issues
Message-ID:  <>
In-Reply-To: <>
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On Tue, 19 Jan 2010, Morgan Wesstr=F6m wrote:
> The disks involved don't happen to be Western Digital Green Power
> disks, do they? The Intelli-Park function in these disks are wrecking
> havoc with I/O in Linux-land at least, causing massive stalls and
> iowait through the roof during the 25-30 seconds it takes for the
> heads to unload after parking. I have two of these disks sitting on
> my desk now collecting dust...

There's this..

and you can get the tool at..

I am planning to try this out tonight..

Daniel O'Connor software and network engineer
for Genesis Software -
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C

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