<html>
  <head>
    <meta content="text/html; charset=ISO-8859-1"
      http-equiv="Content-Type">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    Denny,<br>
    <br>
    Does you application use JNI critical regions?<br>
    <tt>(GetPrimitiveArrayCritical</tt> or <tt>GetStringCritical)</tt><br>
    <br>
    What jdk release is this?<br>
    <br>
    Jon<br>
    <tt><br>
    </tt>
    <div class="moz-cite-prefix">On 1/23/2014 12:38 AM, Denny Kettwig
      wrote:<br>
    </div>
    <blockquote
      cite="mid:6175F8C4FE407D4F830EDA25C27A43173B66291C@Werum1790.werum.net"
      type="cite">
      <meta http-equiv="Content-Type" content="text/html;
        charset=ISO-8859-1">
      <meta name="Generator" content="Microsoft Word 14 (filtered
        medium)">
      <!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]-->
      <style><!--
/* Font Definitions */
@font-face
        {font-family:Calibri;
        panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
        {font-family:Tahoma;
        panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
        {margin:0in;
        margin-bottom:.0001pt;
        font-size:11.0pt;
        font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
        {mso-style-priority:99;
        color:blue;
        text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
        {mso-style-priority:99;
        color:purple;
        text-decoration:underline;}
p
        {mso-style-priority:99;
        mso-margin-top-alt:auto;
        margin-right:0in;
        mso-margin-bottom-alt:auto;
        margin-left:0in;
        font-size:12.0pt;
        font-family:"Times New Roman","serif";}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
        {mso-style-priority:99;
        mso-style-link:"Sprechblasentext Zchn";
        margin:0in;
        margin-bottom:.0001pt;
        font-size:8.0pt;
        font-family:"Tahoma","sans-serif";}
p.MsoListParagraph, li.MsoListParagraph, div.MsoListParagraph
        {mso-style-priority:34;
        margin-top:0in;
        margin-right:0in;
        margin-bottom:0in;
        margin-left:.5in;
        margin-bottom:.0001pt;
        font-size:11.0pt;
        font-family:"Calibri","sans-serif";}
span.SprechblasentextZchn
        {mso-style-name:"Sprechblasentext Zchn";
        mso-style-priority:99;
        mso-style-link:Sprechblasentext;
        font-family:"Tahoma","sans-serif";}
span.E-MailFormatvorlage21
        {mso-style-type:personal;
        font-family:"Calibri","sans-serif";
        color:windowtext;}
span.E-MailFormatvorlage22
        {mso-style-type:personal-reply;
        font-family:"Calibri","sans-serif";
        color:#1F497D;}
.MsoChpDefault
        {mso-style-type:export-only;
        font-size:10.0pt;}
@page WordSection1
        {size:8.5in 11.0in;
        margin:70.85pt 70.85pt 56.7pt 70.85pt;}
div.WordSection1
        {page:WordSection1;}
/* List Definitions */
@list l0
        {mso-list-id:772553635;
        mso-list-type:hybrid;
        mso-list-template-ids:440187212 67698703 67698713 67698715 67698703 67698713 67698715 67698703 67698713 67698715;}
@list l0:level1
        {mso-level-tab-stop:none;
        mso-level-number-position:left;
        margin-left:45.0pt;
        text-indent:-.25in;}
@list l0:level2
        {mso-level-number-format:alpha-lower;
        mso-level-tab-stop:none;
        mso-level-number-position:left;
        margin-left:81.0pt;
        text-indent:-.25in;}
@list l0:level3
        {mso-level-number-format:roman-lower;
        mso-level-tab-stop:none;
        mso-level-number-position:right;
        margin-left:117.0pt;
        text-indent:-9.0pt;}
@list l0:level4
        {mso-level-tab-stop:none;
        mso-level-number-position:left;
        margin-left:153.0pt;
        text-indent:-.25in;}
@list l0:level5
        {mso-level-number-format:alpha-lower;
        mso-level-tab-stop:none;
        mso-level-number-position:left;
        margin-left:189.0pt;
        text-indent:-.25in;}
@list l0:level6
        {mso-level-number-format:roman-lower;
        mso-level-tab-stop:none;
        mso-level-number-position:right;
        margin-left:225.0pt;
        text-indent:-9.0pt;}
@list l0:level7
        {mso-level-tab-stop:none;
        mso-level-number-position:left;
        margin-left:261.0pt;
        text-indent:-.25in;}
@list l0:level8
        {mso-level-number-format:alpha-lower;
        mso-level-tab-stop:none;
        mso-level-number-position:left;
        margin-left:297.0pt;
        text-indent:-.25in;}
@list l0:level9
        {mso-level-number-format:roman-lower;
        mso-level-tab-stop:none;
        mso-level-number-position:right;
        margin-left:333.0pt;
        text-indent:-9.0pt;}
ol
        {margin-bottom:0in;}
ul
        {margin-bottom:0in;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
      <div class="WordSection1">
        <p class="MsoNormal"><span lang="DE">Hey folks,<o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="DE"><o:p>&nbsp;</o:p></span></p>
        <p class="MsoNormal">in one of our recent cluster systems we
          found 2 unexplainable events within the GC logs. I&#8217;d like to
          address these events to you and ask for your advice. We are
          running a clustered jBoss System with 4 nodes, every node has
          the same configuration. We use the following parameters:<o:p></o:p></p>
        <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
        <p class="MsoNormal">-Xms10g <o:p></o:p></p>
        <p class="MsoNormal">-Xmx10g<o:p></o:p></p>
        <p class="MsoNormal">-Xmn3g<o:p></o:p></p>
        <p class="MsoNormal">-Xss2048k<o:p></o:p></p>
        <p class="MsoNormal">-XX:+ExplicitGCInvokesConcurrent<o:p></o:p></p>
        <p class="MsoNormal">-XX:+CMSClassUnloadingEnabled<o:p></o:p></p>
        <p class="MsoNormal">-XX:+UseParNewGC<o:p></o:p></p>
        <p class="MsoNormal">-XX:+UseConcMarkSweepGC<o:p></o:p></p>
        <p class="MsoNormal">-XX:ParallelGCThreads=22<o:p></o:p></p>
        <p class="MsoNormal">-XX:SurvivorRatio=8<o:p></o:p></p>
        <p class="MsoNormal">-XX:TargetSurvivorRatio=90<o:p></o:p></p>
        <p class="MsoNormal">-XX:PermSize=512M<o:p></o:p></p>
        <p class="MsoNormal">-XX:MaxPermSize=512m<o:p></o:p></p>
        <p class="MsoNormal">-Dsun.rmi.dgc.client.gcInterval=3600000 <o:p></o:p></p>
        <p class="MsoNormal">-Dsun.rmi.dgc.server.gcInterval=3600000<o:p></o:p></p>
        <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
        <p class="MsoNormal"><b>Event 1<o:p></o:p></b></p>
        <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
        <p class="MsoNormal">The first event is a very frequent CMS
          collections on the first node for about 11 hours. We are
          talking here about a peak value of 258 CMS collections per
          hour. From my knowledge this event starts without any reason
          and ends without any reason since the old space is below 10%
          usage in this time frame. I do not know what might have caused
          this CMS collection. We already experienced similar events on
          this cluster in the past, but at a much higher heap usage
          (above 90%) and under high load with most likely a huge heap
          fragmentation and the frequent CMS collections ended with a
          single very long Full GC that defragmented the heap. In the
          current event all this is not the case.
          <b>I attached the relevant part of the GC log</b>.<o:p></o:p></p>
        <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
        <p class="MsoNormal"><b>Event 2<o:p></o:p></b></p>
        <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
        <p class="MsoNormal">The second event is just as confusing for
          me as the first one. At a certain point in time a full GC
          takes place on
          <b>all 4 Nodes </b>and I cannot find a reason for it. Here
          are the relevant parts:<o:p></o:p></p>
        <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">N1&nbsp;<o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T05:43:28.041+0100:
            768231.382: [GC 768231.383: [ParNew:
            2618493K-&gt;92197K(2831168K), 0.3007160 secs]
            3120456K-&gt;594160K(10171200K), 0.3017204 secs] [Times:
            user=0.91 sys=0.00, real=0.30 secs] <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T05:45:31.864+0100:
            768355.209: [Full GC 768355.210: [CMS:
            501963K-&gt;496288K(7340032K), 4.2140085 secs]
            1397267K-&gt;496288K(10171200K), [CMS Perm :
            203781K-&gt;178528K(524288K)], 4.2148018 secs] [Times:
            user=4.21 sys=0.00, real=4.21 secs]
            <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T05:52:40.591+0100:
            768783.949: [GC 768783.949: [ParNew:
            2516608K-&gt;48243K(2831168K), 0.2649174 secs]
            3012896K-&gt;544532K(10171200K), 0.2659039 secs] [Times:
            user=0.47 sys=0.00, real=0.27 secs] <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">N2&nbsp;<o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T04:57:21.524+0100:
            765208.310: [GC 765208.311: [ParNew:
            924566K-&gt;111068K(2831168K), 0.1790573 secs]
            1416514K-&gt;603015K(10171200K), 0.1797121 secs] [Times:
            user=1.08 sys=0.00, real=0.19 secs] <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T04:57:21.711+0100:
            765208.499: [GC [1 CMS-initial-mark: 491947K(7340032K)]
            603015K(10171200K), 0.3289639 secs] [Times: user=0.33
            sys=0.00, real=0.33 secs] <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T04:57:22.039+0100:
            765208.828: [CMS-concurrent-mark-start]<o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T04:57:22.616+0100:
            765209.405: [CMS-concurrent-mark: 0.577/0.577 secs] [Times:
            user=3.53 sys=0.05, real=0.58 secs]
            <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T04:57:22.616+0100:
            765209.405: [CMS-concurrent-preclean-start]<o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T04:57:22.647+0100:
            765209.430: [CMS-concurrent-preclean: 0.024/0.024 secs]
            [Times: user=0.03 sys=0.00, real=0.03 secs]
            <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T04:57:22.647+0100:
            765209.430: [CMS-concurrent-abortable-preclean-start]<o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">CMS:
            abort preclean due to time 2013-12-20T04:57:28.060+0100:
            765214.848: [CMS-concurrent-abortable-preclean: 4.208/5.418
            secs] [Times: user=4.10 sys=0.03, real=5.41 secs] <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T04:57:28.076+0100:
            765214.857: [GC[YG occupancy: 124872 K (2831168
            K)]765214.857: [Rescan (parallel) , 0.0580906
            secs]765214.916: [weak refs processing, 0.0000912
            secs]765214.916: [class unloading, 0.0769742
            secs]765214.993: [scrub symbol &amp; string tables,
            0.0612689 secs] [1 CMS-remark: 491947K(7340032K)]
            616820K(10171200K), 0.2256506 secs] [Times: user=0.48
            sys=0.00, real=0.22 secs]
            <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T04:57:28.294+0100:
            765215.083: [CMS-concurrent-sweep-start]<o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T04:57:29.043+0100:
            765215.834: [CMS-concurrent-sweep: 0.750/0.750 secs] [Times:
            user=0.76 sys=0.00, real=0.75 secs]
            <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T04:57:29.043+0100:
            765215.834: [CMS-concurrent-reset-start]<o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T04:57:29.074+0100:
            765215.856: [CMS-concurrent-reset: 0.022/0.022 secs] [Times:
            user=0.03 sys=0.00, real=0.03 secs]
            <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T05:47:54.607+0100:
            768241.413: [Full GC 768241.414: [CMS:
            491947K-&gt;464864K(7340032K), 4.5053183 secs]
            1910412K-&gt;464864K(10171200K), [CMS Perm :
            183511K-&gt;168997K(524288K)], 4.5059088 secs] [Times:
            user=4.49 sys=0.02, real=4.51 secs]
            <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T06:47:59.098+0100:
            771845.954: [GC 771845.954: [ParNew:
            1507774K-&gt;58195K(2831168K), 0.2307012 secs]
            1972638K-&gt;523059K(10171200K), 0.2313931 secs] [Times:
            user=0.37 sys=0.00, real=0.23 secs] <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">N3&nbsp;<o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T05:46:25.441+0100:
            767981.526: [GC 767981.526: [ParNew:
            2695212K-&gt;166641K(2831168K), 0.3278475 secs]
            3268057K-&gt;739486K(10171200K), 0.3284853 secs] [Times:
            user=1.62 sys=0.00, real=0.33 secs] <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T05:49:55.467+0100:
            768191.578: [Full GC 768191.578: [CMS:
            572844K-&gt;457790K(7340032K), 3.7687762 secs]
            1216176K-&gt;457790K(10171200K), [CMS Perm :
            181711K-&gt;169514K(524288K)], 3.7692999 secs] [Times:
            user=3.76 sys=0.00, real=3.79 secs]
            <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T06:49:59.249+0100:
            771795.415: [GC 771795.415: [ParNew:
            1585077K-&gt;72146K(2831168K), 0.2632945 secs]
            2042868K-&gt;529936K(10171200K), 0.2639889 secs] [Times:
            user=0.41 sys=0.00, real=0.27 secs] <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">N4<o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T05:48:21.551+0100:
            767914.067: [GC 767914.068: [ParNew:
            2656327K-&gt;119432K(2831168K), 0.2603676 secs]
            3222693K-&gt;685799K(10171200K), 0.2609581 secs] [Times:
            user=1.14 sys=0.00, real=0.26 secs] <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T05:49:03.939+0100:
            767956.457: [Full GC 767956.457: [CMS:
            566366K-&gt;579681K(7340032K), 6.1324841 secs]
            3149011K-&gt;579681K(10171200K), [CMS Perm :
            190240K-&gt;174791K(524288K)], 6.1331389 secs] [Times:
            user=6.13 sys=0.00, real=6.13 secs]
            <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">2013-12-20T05:50:10.262+0100:
            768022.762: [GC 768022.763: [ParNew:
            2516608K-&gt;83922K(2831168K), 0.2157015 secs]
            3096289K-&gt;663603K(10171200K), 0.2162262 secs] [Times:
            user=0.41 sys=0.00, real=0.22 secs] <o:p></o:p></span></p>
        <p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:8.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
        <p class="MsoNormal">Between these Full GC are only a few
          minutes or as between N3 and N4 a few seconds. I made some
          research on possible reasons for a Full GC and this is the
          list I gathered so far:<o:p></o:p></p>
        <p class="MsoListParagraph"
          style="margin-left:45.0pt;text-indent:-.25in;mso-list:l0
          level1 lfo2;vertical-align:middle">
          <!--[if !supportLists]--><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><span
              style="mso-list:Ignore">1.<span style="font:7.0pt
                &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;
              </span></span></span><!--[endif]--><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black;background:white">Running
            out of old gen</span><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p></o:p></span></p>
        <p class="MsoListParagraph"
          style="margin-left:45.0pt;text-indent:-.25in;mso-list:l0
          level1 lfo2;vertical-align:middle">
          <!--[if !supportLists]--><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><span
              style="mso-list:Ignore">2.<span style="font:7.0pt
                &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;
              </span></span></span><!--[endif]--><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black;background:white">Running
            out of perm gen</span><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p></o:p></span></p>
        <p class="MsoListParagraph"
          style="margin-left:45.0pt;text-indent:-.25in;mso-list:l0
          level1 lfo2;vertical-align:middle">
          <!--[if !supportLists]--><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><span
              style="mso-list:Ignore">3.<span style="font:7.0pt
                &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;
              </span></span></span><!--[endif]--><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black;background:white">Calling
            System.gc() (indicated by System in the ouput)</span><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p></o:p></span></p>
        <p class="MsoListParagraph"
          style="margin-left:45.0pt;text-indent:-.25in;mso-list:l0
          level1 lfo2;vertical-align:middle">
          <!--[if !supportLists]--><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><span
              style="mso-list:Ignore">4.<span style="font:7.0pt
                &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;
              </span></span></span><!--[endif]--><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black;background:white">Not
            having enough free space in Survivor Space to copy objects
            from Eden (promotion failed)</span><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p></o:p></span></p>
        <p class="MsoListParagraph"
          style="margin-left:45.0pt;text-indent:-.25in;mso-list:l0
          level1 lfo2;vertical-align:middle">
          <!--[if !supportLists]--><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><span
              style="mso-list:Ignore">5.<span style="font:7.0pt
                &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;
              </span></span></span><!--[endif]--><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black;background:white">Running
            out of old gen before a concurrent collection can free it
            (Concurrent Mode Failure)</span><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p></o:p></span></p>
        <p class="MsoListParagraph"
          style="margin-left:45.0pt;text-indent:-.25in;mso-list:l0
          level1 lfo2;vertical-align:middle">
          <!--[if !supportLists]--><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><span
              style="mso-list:Ignore">6.<span style="font:7.0pt
                &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;
              </span></span></span><!--[endif]--><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black;background:white">Having
            high fragmentation and not enough space for a larger object
            in old gen</span><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p></o:p></span></p>
        <p class="MsoListParagraph"
          style="margin-left:45.0pt;vertical-align:middle"><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
        <p class="MsoNormal" style="vertical-align:middle"><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">However
            none of these 6 conditions are fulfilled by any of the above
            shown full GC. So once again I&#8217;m lost and do not have an
            explanation for this.<o:p></o:p></span></p>
        <p class="MsoNormal" style="vertical-align:middle"><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">If
            you need the full logs for further analysis please let me
            know.<o:p></o:p></span></p>
        <p class="MsoNormal" style="vertical-align:middle"><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
        <p class="MsoNormal" style="vertical-align:middle"><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Kind
            Regards<o:p></o:p></span></p>
        <p class="MsoNormal" style="vertical-align:middle"><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Denny
            <o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:#1F497D"><img
              id="Picture_x0020_1"
              src="cid:part1.00070000.02090004@oracle.com"
              alt="Beschreibung: werum-hr" height="2" width="335"><o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:#1F497D"><o:p>&nbsp;</o:p></span></p>
        <p class="MsoNormal"><img id="Grafik_x0020_1"
            src="cid:part2.03080500.05090905@oracle.com"
            alt="cid:image002.png@01CEF67E.8AEB4630" height="30"
            width="120"><span lang="DE"><o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-size:10.0pt" lang="DE"><o:p>&nbsp;</o:p></span></p>
        <p class="MsoNormal"><span style="font-size:10.0pt" lang="DE">Werum
            Software &amp; Systems AG<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-size:10.0pt" lang="DE">Wulf-Werum-Strasse
            3 | 21337 Lueneburg | Germany<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-size:10.0pt" lang="DE">Tel.
            +49(0)4131/8900-983 | Fax +49(0)4131/8900-20
            <o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-size:10.0pt" lang="DE"><a
              moz-do-not-send="true"
              href="mailto:denny.kettwig@werum.de">mailto:denny.kettwig@werum.de</a>
            |
            <a moz-do-not-send="true" href="http://www.werum.de/">http://www.werum.de</a><o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-size:10.0pt" lang="DE"><o:p>&nbsp;</o:p></span></p>
        <p class="MsoNormal"><span style="font-size:10.0pt">VAT No. DE
            116 083 850 | RG Lueneburg HRB 2262<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-size:10.0pt">Chairman of
            Supervisory Board: Johannes Zimmermann<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-size:10.0pt" lang="DE">Executive
            Board: Hartmut Krome, Ruediger Schlierenkaemper, Hans-Peter
            Subel<o:p></o:p></span></p>
        <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
        <p class="MsoNormal" style="vertical-align:middle"><span
style="font-size:10.5pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
        <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
        <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
hotspot-gc-use mailing list
<a class="moz-txt-link-abbreviated" href="mailto:hotspot-gc-use@openjdk.java.net">hotspot-gc-use@openjdk.java.net</a>
<a class="moz-txt-link-freetext" href="http://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-use">http://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-use</a>
</pre>
    </blockquote>
    <br>
  </body>
</html>