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Shane,<br>
<br>
You may be seeing <br>
<br>
8081629 CMS split_block() does not correctly fix up
block-offset-table for large blocks<br>
<br>
<a class="moz-txt-link-freetext" href="https://bugs.openjdk.java.net/browse/JDK-8081629">https://bugs.openjdk.java.net/browse/JDK-8081629</a><br>
<br>
If you can try an early release version of jdk9, this bug is<br>
fixed there.<br>
<br>
Jon<br>
<br>
<div class="moz-cite-prefix">On 03/04/2016 10:33 AM, Shane Cox
wrote:<br>
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<p class="MsoNormal">We are running Java 8_45 on Linux. We are
seeing period of time when ParNew pause time steadily
increases from 5ms to over 1 second. As the pause time
increases, User CPU time increases in proportion. Then, just
as suddenly as the problem started, it ends and pause time
returns to 5ms.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">GC log attached. The issue begins around
2016-02-28T17:05 and ends at 2016-02-28T19:33. During that
span of nearly 2.5 hours, ParNew pause time steadily increased
from 5ms to 1.47 seconds. CPU utilization ranged from 95-99%
idle during this period. Percent free memory did not change
during this period.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any ideas what might be causing this?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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