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<!-- received="Thu Apr  2 22:21:23 1998 PST" -->
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<!-- sent="Fri, 3 Apr 1998 08:15:57 +0200 (MET DST)" -->
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<!-- name="Rogier Wolff" -->
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<!-- email="R.E.Wolff@BitWizard.nl" -->
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<!-- subject="Re: Sane patches/observations on solaris 2.6/umax s6-e" -->
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<!-- id="199804030615.IAA00605@cave.BitWizard.nl" -->
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<!-- inreplyto="Pine.LNX.3.96.980403022525.28903D-100000@hvdkooij" -->
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<title>sane-devel: Re: Sane patches/observations on solaris 2.6/umax s6-e</title>
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<h1>Re: Sane patches/observations on solaris 2.6/umax s6-e</h1>
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<b>Rogier Wolff</b> (<a href="mailto:R.E.Wolff@BitWizard.nl"><i>R.E.Wolff@BitWizard.nl</i></a>)<br>
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<i>Fri, 3 Apr 1998 08:15:57 +0200 (MET DST)</i>
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<p>
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<ul>
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<li> <b>Messages sorted by:</b> <a href="date.html#25">[ date ]</a><a href="index.html#25">[ thread ]</a><a href="subject.html#25">[ subject ]</a><a href="author.html#25">[ author ]</a>
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<li> <b>Next message:</b> <a href="0026.html">David Mosberger-Tang: "Re: sane_read returning *len == 0"</a>
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<li> <b>Previous message:</b> <a href="0024.html">David Mosberger-Tang: "Re: sane 0.71 and microtek E3"</a>
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Hugo van der Kooij wrote:<br>
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<i>> </i><br>
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<i>> On Thu, 2 Apr 1998, Michael Polo wrote:</i><br>
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<p>
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<i>> > By the way, on large scans, the scanner seems to back up.  Is</i><br>
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<i>> > there a buffer size to change somewhere to make it scan in one</i><br>
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<i>> > pass without pausing?  I have 128Mb of memory and I thought if</i><br>
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<i>> > the scsi bus could keep up, the system could.  Any ideas?</i><br>
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<i>> </i><br>
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<i>> I do suspect that this is related to the scanner. I have a HP Scanjet 5p</i><br>
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<i>> And even when the system is busy I don't have this backup behaviour of the</i><br>
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<i>> scanner. It scan in one smooth motion.</i><br>
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<p>
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My "guess" was that if the system could issue the next read command<br>
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within the right timelimit, the scanner would be able to keep on<br>
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going. However, whatever I do, my scanner will backtrack on every<br>
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"read" that is issued.<br>
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<p>
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It seems that the scanner doesn't "multitask" very well. It should<br>
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internally keep on scanning, until it runs out of buffer space, not<br>
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stop once it has satisfied the current "read" command.<br>
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<p>
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On Linux we have the source to the generic scsi driver, and there are<br>
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patches to increase the buffer size, allowing you larger "read"<br>
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commands. Wether that's possible on your sun, I can't say.<br>
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<p>
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I'm talking about the Tamarack. But is not valid for HPs as Hugo says,<br>
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but probably is for Musteks.<br>
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<p>
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<p>
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					Roger. <br>
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<p>
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<pre>
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<p>
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<pre>
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--
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</pre>
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<!-- body="end" -->
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<p>
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<ul>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0026.html">David Mosberger-Tang: "Re: sane_read returning *len == 0"</a>
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<li> <b>Previous message:</b> <a href="0024.html">David Mosberger-Tang: "Re: sane 0.71 and microtek E3"</a>
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</ul>
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