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Re: [ jEdit-users ] Apparent CPU loop
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From: Robert S. <Rob...@ka...> - 2018-04-04 07:44:06
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<div class="moz-cite-prefix">Hi,<br>
just tried to reproduce - without any "success". System:<br>
<br>
Windows 10, Oracle JRE 8, jEdit 5.4.0:<br>
<br>
java.version=1.8.0_144<br>
java.vm.version=25.144-b01<br>
java.vm.name=Java HotSpot(TM) 64-Bit Server VM<br>
java.runtime.version=1.8.0_144-b01<br>
java.runtime.name=Java(TM) SE Runtime Environment<br>
java.vendor=Oracle Corporation<br>
java.compiler=null<br>
os.name=Windows 10<br>
os.version=10.0<br>
os.arch=amd64<br>
<br>
<br>
Robert<br>
<br>
<br>
Am 03.04.2018 um 16:05 schrieb Jarvis, Bob:<br>
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<div class="WordSection1">
<p class="MsoNormal">I’ve discovered a sequence of operations
which seem to throw jEdit into CPU loop. To do this:<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="mso-list:Ignore">1.<span style="font:7.0pt
"Times New Roman"">
</span></span><!--[endif]-->Select some text in jEdit. Any
text will do.<o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:.75in;text-indent:-.25in;mso-list:l1 level1
lfo2">
<!--[if !supportLists]--><span style="mso-list:Ignore">-<span
style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]-->Note that jEdit’s CPU usage
remains normal (near or at zero) at this point.<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="mso-list:Ignore">2.<span style="font:7.0pt
"Times New Roman"">
</span></span><!--[endif]-->Switch focus to another app.<o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:.75in;text-indent:-.25in;mso-list:l1 level1
lfo2">
<!--[if !supportLists]--><span style="mso-list:Ignore">-<span
style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]-->Note that jEdit’s CPU usage
still remains normal.<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="mso-list:Ignore">3.<span style="font:7.0pt
"Times New Roman"">
</span></span><!--[endif]-->Switch focus back to jEdit. I do
this by clicking on the title bar at the top of the window so
that the selected text remains selected; however, I’ve tested
it by using Alt-Tab to shift focus to another application and
Alt-Shift-Tab to move focus back to jEdit and the same
behavior occurs.<o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:.75in;text-indent:-.25in;mso-list:l1 level1
lfo2">
<!--[if !supportLists]--><span style="mso-list:Ignore">-<span
style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]-->jEdit’s CPU usage immediately
climbs so that it’s consuming an entire core (e.g. 25% in
Windows Task Manager on a quad-core CPU).<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="mso-list:Ignore">4.<span style="font:7.0pt
"Times New Roman"">
</span></span><!--[endif]-->Click somewhere in the jEdit
window so that the selected text becomes un-selected.<o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:.75in;text-indent:-.25in;mso-list:l1 level1
lfo2">
<!--[if !supportLists]--><span style="mso-list:Ignore">-<span
style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]-->jEdit’s CPU usage drops back to
zero.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This occurs under Windows 7, Oracle Java
1.8, jEdit 5.4.0 and is completely repeatable.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Bob<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#222222"><img
style="width:1.1458in;height:.4583in" id="Picture_x0020_1"
src="cid:par...@ka..."
alt="cid:ii_14b3b7f7ec8d3ab3" class="" height="44"
width="110"></span><br>
<b><span style="font-size:12.0pt;color:#0B5394">Bob Jarvis</span></b><span
style="color:#0B5394"><br>
<b>Senior Programming Analyst</b><br>
<a class="moz-txt-link-abbreviated" href="mailto:Bob...@si...">Bob...@si...</a></span><br>
<span style="color:#0B5394">p 330.665.6056 | 375 Ghent Rd.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#0B5394">f 330.665.6266
| Akron, OH 44333</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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