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I don't think we've seen this. What OS?<br>
<br>
I can create a bug report for this. Please send the info needed to<br>
reproduce it.<br>
<br>
Thanks.<br>
<br>
Jon<br>
<br>
<div class="moz-cite-prefix">On 4/23/13 4:59 AM, Lokesh Gidra wrote:<br>
</div>
<blockquote
cite="mid:1366718385.83583.YahooMailNeo@web190905.mail.sg3.yahoo.com"
type="cite">
<div style="color:#000; background-color:#fff; font-family:times
new roman, new york, times, serif;font-size:12pt">
<div>Hello,</div>
<div><br>
</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;">I am trying to experiment
SPECjbb2013 on a 48-core AMD machine with the following
command line options on OpenJDK7 build 147:</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;"><br>
</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;">-XX:ParallelGCThreads=46
-Xms8g -Xmx8g -XX:+UseParallelOldGC -XX:+DisableExplicitGC
-XX:-UseLargePages -XX:-UseCompressedOops</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;"><br>
</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;">The execution hangs
sometimes. When I attached the process to gdb, found that the
GC threads are stuck in the marking phase of Old generation
collection. The bug also hits with lesser GC threads. I am
wondering if this is a known issue.</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;"><br>
</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;">Regards,</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;">Lokesh</div>
</div>
</blockquote>
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