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64 wiersze
2.7 KiB
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<!-- received="Fri Jul 24 12:21:48 1998 PDT" -->
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<!-- sent="Fri, 24 Jul 1998 20:28:24 +0200" -->
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<!-- name="Oliver Rauch" -->
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<!-- email="oliver.rauch@Wolfsburg.DE" -->
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<!-- subject="Re: problems with sgi/umax" -->
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<!-- inreplyto="problems with sgi/umax" -->
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<title>sane-devel: Re: problems with sgi/umax</title>
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<h1>Re: problems with sgi/umax</h1>
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<b>Oliver Rauch</b> (<a href="mailto:oliver.rauch@Wolfsburg.DE"><i>oliver.rauch@Wolfsburg.DE</i></a>)<br>
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<i>Fri, 24 Jul 1998 20:28:24 +0200</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#151">[ date ]</a><a href="index.html#151">[ thread ]</a><a href="subject.html#151">[ subject ]</a><a href="author.html#151">[ author ]</a>
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<li> <b>Next message:</b> <a href="0152.html">Oliver Rauch: "Re: Does CANCEL_PREVIEW work?"</a>
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<li> <b>Previous message:</b> <a href="0150.html">Matto Marjanovic: "Re: Does CANCEL_PREVIEW work?"</a>
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<li> <b>Maybe in reply to:</b> <a href="0120.html">vp00955@hp2.vpn.at: "problems with sgi/umax"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0157.html">Oliver Rauch: "Re: problems with sgi/umax"</a>
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</ul>
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Didier Carlier wrote:<br>
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<p>
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<i>> The coolscan backend suffered from a very similar problem on SGI. The</i><br>
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<i>> workaround has been to limit the size of the data chunks read from the scanner</i><br>
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<i>> to 64K instead of 'sanei_scsi_max_request_size'.</i><br>
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<i>></i><br>
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<i>> Probably more a workaround than a fix but since there was no perceivable</i><br>
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<i>> performance penalty I kept it that way.</i><br>
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<p>
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Hi Didier,<br>
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<p>
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it looks like the modulo(%) function:<br>
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<p>
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s->row_bufsize - (s->row_bufsize % row_len)<br>
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<p>
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makes problems with such big arguments (8*1024*1024)<br>
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and returns 0 in the described case.<br>
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<p>
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I replaced it by a (long)-integer division in the umax-backend.<br>
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<p>
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Bye<br>
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Oliver<br>
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<p>
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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="0152.html">Oliver Rauch: "Re: Does CANCEL_PREVIEW work?"</a>
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<li> <b>Previous message:</b> <a href="0150.html">Matto Marjanovic: "Re: Does CANCEL_PREVIEW work?"</a>
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<li> <b>Maybe in reply to:</b> <a href="0120.html">vp00955@hp2.vpn.at: "problems with sgi/umax"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0157.html">Oliver Rauch: "Re: problems with sgi/umax"</a>
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<!-- reply="end" -->
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</ul>
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