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<TITLE>sane-devel: Re: scsi command queuing</TITLE>
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<META NAME="Author" CONTENT="Henning Meier-Geinitz (hmg-ml@gmx.de)">
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<META NAME="Subject" CONTENT="Re: scsi command queuing">
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<H1>Re: scsi command queuing</H1>
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<STRONG>From:</STRONG> Henning Meier-Geinitz (<A HREF="mailto:hmg-ml@gmx.de?Subject=Re:%20scsi%20command%20queuing&In-Reply-To=<20000630195917.B7623@hmg1.vortex.swb.de>"><EM>hmg-ml@gmx.de</EM></A>)<BR>
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<STRONG>Date:</STRONG> Fri Jun 30 2000 - 10:59:17 PDT
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<LI><STRONG>Next message:</STRONG> <A HREF="0233.html">Henning Meier-Geinitz: "Re: scsi command queuing"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0231.html">Henning Meier-Geinitz: "Re: Problems with mustek scanner"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0207.html">Oliver Rauch: "Re: scsi command queuing"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0239.html">Douglas Gilbert: "Re: scsi command queuing"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0212.html">abel deuring: "Re: scsi command queuing"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0239.html">Douglas Gilbert: "Re: scsi command queuing"</A>
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<P>
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Hi,
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<BR>
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<P>On Thu, Jun 29, 2000 at 12:13:23AM +0200, Oliver Rauch wrote:
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<BR>
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<EM>> Henning Meier-Geinitz wrote:
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> > Same here. I looked at the scanning times when the backend does nothing but
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</EM><BR>
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<EM>> > getting data from the scanner and ignoring it. There was no big change in
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</EM><BR>
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<EM>> > scanning time (about 5 %). With the original SCSI adapter the Mustek
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</EM><BR>
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<EM>> > scanners are about twice as slow as with Windows despite large (4 MB) SCSI
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</EM><BR>
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<EM>> > buffers and tweaking the Linux SCSI driver.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> 4 MB images are not the problem of the umax backend.
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</EM><BR>
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<P>I am not talking about image size but about SCSI buffer size. With most
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<BR>
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Mustek scanners and the Mustek SCSI adapters the scan stops after each read
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<BR>
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command and backtracking occurs. So I am trying to scan with large buffers.
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<BR>
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Standard is 1 MB at the moment. The scan speed is dependant from the
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<BR>
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resolution and image with (but not from length).
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<BR>
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<P>Bye,
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<BR>
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Henning
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<BR>
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<P><PRE>
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--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20scsi%20command%20queuing&In-Reply-To=<20000630195917.B7623@hmg1.vortex.swb.de>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0233.html">Henning Meier-Geinitz: "Re: scsi command queuing"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0231.html">Henning Meier-Geinitz: "Re: Problems with mustek scanner"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0207.html">Oliver Rauch: "Re: scsi command queuing"</A>
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<!-- nextthread="start" -->
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0239.html">Douglas Gilbert: "Re: scsi command queuing"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0212.html">abel deuring: "Re: scsi command queuing"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0239.html">Douglas Gilbert: "Re: scsi command queuing"</A>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Fri Jun 30 2000 - 10:53:58 PDT</EM>
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