<div dir="ltr">Perhaps changing it in a JDK8 update release would be great. I have not Oracle support.<div class="gmail_extra"><br><div class="gmail_quote">On Thu, Feb 5, 2015 at 5:14 AM, charlie hunt <span dir="ltr"><<a href="mailto:charlie.hunt@oracle.com" target="_blank">charlie.hunt@oracle.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>I don't know much about how "patching"
works, or if "patching" is something that is offered. :-(<br>
<br>
Perhaps someone else on this mailing list knows?<br>
<br>
Or, perhaps you are asking for a change to be introduced in a JDK
8 update release?<br>
<br>
My first reaction was that I was assuming you have an Oracle
support contract. If that's the case, then talking to your Oracle
sales rep may be the place to start? Caveat: I also do not know
much about how the support contract or sustaining side of the
house works.<br>
<br>
Sorry to be of little help!<span class="HOEnZb"><font color="#888888"><br>
<br>
charlie</font></span><div><div class="h5"><br>
<br>
On 02/04/2015 05:51 PM, Bill Hastings wrote:<br>
</div></div></div><div><div class="h5">
<blockquote type="cite">
<div dir="ltr">Can this be patched? Because we see this very often
in our environment.
<div><br>
</div>
<div>Regards</div>
<div>Avinash</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Feb 4, 2015 at 12:46 PM,
charlie hunt <span dir="ltr"><<a href="mailto:charlie.hunt@oracle.com" target="_blank">charlie.hunt@oracle.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word">Filed as: <a href="https://bugs.openjdk.java.net/browse/JDK-8072498" target="_blank">https://bugs.openjdk.java.net/browse/JDK-8072498</a><span><font color="#888888">
<div><br>
</div>
<div>charlie</div>
</font></span>
<div>
<div>
<div><br>
<div>
<blockquote type="cite">
<div>On Feb 3, 2015, at 7:03 PM, Srinivas
Ramakrishna <<a href="mailto:ysr1729@gmail.com" target="_blank">ysr1729@gmail.com</a>>
wrote:</div>
<br>
<div>
<div dir="auto">
<div>Yes, unfortunately, I don't think Jni
refs procsing is parallelized, but should
be. Please file a bug...</div>
<div><br>
</div>
<div>--- Ramki</div>
<div><br>
<br>
ysr1729</div>
<div><br>
On Feb 3, 2015, at 16:19, Bill Hastings
<<a href="mailto:bllhastings@gmail.com" target="_blank">bllhastings@gmail.com</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div>
<div dir="ltr">Yes <span style="font-size:12.8000001907349px">-XX:+ParallelRefProcEnabled</span> is
enabled.
<div><br>
</div>
<div>Thanks</div>
<div>Bill.</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Tue, Feb
3, 2015 at 4:09 PM, charlie hunt <span dir="ltr"><<a href="mailto:charlie.hunt@oracle.com" target="_blank">charlie.hunt@oracle.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>You might try enabling
-XX:+ParallelRefProcEnabled.<br>
<br>
This will enable
multi-threaded reference
processing.<br>
<br>
User CPU time vs real time
coupled with the JNI Weak
Reference time suggests single
threaded reference processing.<br>
<br>
hths,<br>
<br>
charlie
<div>
<div><br>
<br>
On 02/03/2015 05:20 PM,
Bill Hastings wrote:<br>
</div>
</div>
</div>
<div>
<div>
<blockquote type="cite">
<div dir="ltr">Periodically
get this in my CMS GC
log:<br>
<br>
2015-02-03T03:24:27.419-0800:
17917.047: [Rescan
(parallel) , 0.0625400
secs]2015-02-03T03:24:27.482-0800:
17917.110: [weak refs
processing2015-02-03T03:24:27.482-0800:
17917.110:
[SoftReference, 1 refs,
0.0010820
secs]2015-02-03T03:24:27.483-0800:
17917.111:
[WeakReference, 0 refs,
0.0015340
secs]2015-02-03T03:24:27.484-0800:
17917.112:
[FinalReference, 0 refs,
0.0007930
secs]2015-02-03T03:24:27.485-0800:
17917.113:
[PhantomReference, 0
refs, 0.0008860
secs]2015-02-03T03:24:27.486-0800:
17917.114: [<b>JNI Weak
Reference, 6.1104040
secs], 6.1148360 secs</b>]2015-02-03T03:24:33.596-0800:
17923.225: [scrub string
table, 0.0006670 secs]
[1 CMS-remark:
531682K(5242880K)]
1827698K(7759488K),
6.1785190 secs] [Times:
user=7.22 sys=0.00,
real=6.18 secs]
<div><br>
</div>
<div>JNI Weak References
processing take
several seconds. How
do I remedy this? I
use JNA but I do not
use any WeakReference
classes in my
application.</div>
<div><br>
</div>
<div>Regards<br>
</div>
<div>Bill</div>
</div>
</blockquote>
<br>
</div>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</div>
</blockquote>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</blockquote>
<br>
</div></div></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature">Cheers<br>Bill</div>
</div></div>