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<title>sane-devel: scanimage: infinite loop hogs CPU and fills up disk</title>
<h1>scanimage: infinite loop hogs CPU and fills up disk</h1>
<b>Fernando Fernandez</b> (<a href="mailto:ferdez@despodata.pt"><i>ferdez@despodata.pt</i></a>)<br>
<i>Mon, 17 May 1999 14:23:07 +0100</i>
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Hi!<br>
<p>
I've just experienced o couple of problems that filled some <br>
hundred megabytes of disk on our server. Let me explain...<br>
<p>
I'm using two linuxes (one server and one workstation).<br>
The user uses the workstation simply as a X-Terminal with<br>
a scanner. All software (including scanimage invocations)<br>
run on the server and the scanner is accessed via network<br>
and saned.<br>
<p>
I'v been using a HP Scanjet IIp and a Tecram SCSI controller<br>
with kernel 2.2.7 and it has worked fine. Today I switched<br>
to a Future Domain TMC-1800 controller and the kernel<br>
started to hang. So, the workstation hanged completely.<br>
It seems it was some kind of conflict with a PnP sound<br>
card installed in the workstation. It works now.<br>
<p>
Scanimage is being called from a Perl/tk program in a X session<br>
running on the server, so all error messages go to a file <br>
called .xsession-errors. The problem was that, when the <br>
workstation hanged, the messages of scandisk rapidly filled <br>
up the disk because it kept repeating "scanimage: stopping <br>
scanner" or something like that. It only stopped when the <br>
users complained about disk space and I killed the scanimage <br>
process (that was also hogging all the CPU cicles it managed<br>
to grab).<br>
<p>
I hope this problem can be worked out although it's not<br>
very serious.<br>
<p>
Let me also thank everybody in the SANE team for the good<br>
work!<br>
<p>
Fernando<br>
<pre>
--
Fernando Fernandez
<a href="http://despodata.pt/ddata/pessoal/ferdez.htm">http://despodata.pt/ddata/pessoal/ferdez.htm</a>
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