Date: Sun, 1 Sep 2002 15:29:20 -0400 (EDT) From: Peter Leftwich <Hostmaster@Video2Video.Com> To: Greg 'groggy' Lehey <grog@FreeBSD.ORG> Cc: Giorgos Keramidas <keramida@FreeBSD.ORG>, FreeBSD LIST <FreeBSD-Questions@FreeBSD.Org> Subject: Re: dd if=/dev/zero of=/dev/ad1 Message-ID: <20020901152742.M37627-100000@earl-grey.cloud9.net> In-Reply-To: <20020826013322.GD88156@wantadilla.lemis.com>
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On Mon, 26 Aug 2002, Greg 'groggy' Lehey wrote:
> > True. You might want to use a large block size to speed operations if
> > possible (less I/O calls from dd(1) to the kernel, and more freedom to
> > the kernel drivers to arrange in which order data is zeroed). Try at
> > least 32 KB.
> The optimum is the maximum transfer size, currently 128 kB.
> Greg {See complete headers for address and phone numbers}
What determines that the optimum/maximum transfer size is currently 128 kB?
My HDD and hardware or the most current version of the OS FreeBSD 4.6.2?
--
Peter Leftwich
President & Founder
Video2Video Services
Box 13692, La Jolla, CA, 92039 USA
+1-413-403-9555
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