<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<meta http-equiv="content-type" content="text/html; charset=utf-8">
This is a P1 bug in JDK 9 - a conflict when freeing
continues_humongous regions. <br>
<br>
The scenario is a region was continues_humongous is then freed by
one worker when the whole H-object is freed. The continues_humongous
region needs to be claimed by the first worker, otherwise other
workers may run into the free region.
It turns out the fix was to revert a change made a few months ago.<br>
<br>
It didn't help out that an assert actually did the right thing, so
it never failed in debug code :-)<br>
<br>
<a id="key-val" rel="4762349"
href="https://bugs.openjdk.java.net/browse/JDK-8069004">BUG:
JDK-8069004 Kitchensink hanged with 16Gb heap and GC pause >30
min </a><br>
Webrev: <a class="moz-txt-link-freetext"
href="http://cr.openjdk.java.net/%7Edrwhite/8069004/webrev.00/">http://cr.openjdk.java.net/~drwhite/8069004/webrev.00/</a>
<br>
<br>
Ran jprt.<br>
<br>
Thanks!<br>
<br>
- Derek<br>
<a id="key-val" rel="4762349"
href="https://bugs.openjdk.java.net/browse/JDK-8069004"></a>
</body>
</html>