Date: Tue, 23 Sep 2003 09:19:18 -0700 (PDT) From: Doug White <dwhite@gumbysoft.com> To: Brian Behlendorf <brian@hyperreal.org> Cc: stable@freebsd.org Subject: Re: tuning parameters for parallel access to umass devices? Message-ID: <20030923091649.F86981@carver.gumbysoft.com> In-Reply-To: <20030922120422.W8800@fez.hyperreal.org> References: <20030922120422.W8800@fez.hyperreal.org>
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On Mon, 22 Sep 2003, Brian Behlendorf wrote: > > It looks like copying files over USB to a umass device causes other I/O > attempts to be blocked for an unreasonable (10-20 seconds) amount of time. > Here's the device in question: On the volume being copied to, or another volume? > da2: 650KB/s transfers Don't forget that this isn't much faster than a floppy disk, and flash I/O is pretty slow anyway. -- Doug White | FreeBSD: The Power to Serve dwhite@gumbysoft.com | www.FreeBSD.org
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