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    Ramki,<br>
    <br>
    Can you do the following to be sure that hotspot did not take the
    parameter?<br>
    java -XX:ConcGCThreads=1 -XX:+PrintFlagsFinal<br>
    <br>
    I am using jdk9b154, the output shows it changed the ConcGCThreads
    to 1<br>
    <br>
    Thanks<br>
    Jenny<br>
    <br>
    <div class="moz-cite-prefix">On 4/17/2017 4:33 PM, Ram Krishnan
      wrote:<br>
    </div>
    <blockquote
cite="mid:CAKOuegCcvLNM5VtHR8T+zYauFai5EUVRa3eo-BWCLkEeYpRrKg@mail.gmail.com"
      type="cite">
      <div dir="ltr">
        <div class="gmail_default" style="font-family:courier
          new,monospace">Many thanks Jonathan for the immediate reply. <br>
          <br>
          I am copying the hotspot gc team.<br>
          <br>
        </div>
        <div class="gmail_default" style="font-family:courier
          new,monospace">Hotspot gc team -- your help would be much
          appreciated on the topic below.<br>
        </div>
        <div class="gmail_default" style="font-family:courier
          new,monospace"><br>
        </div>
        <div class="gmail_default" style="font-family:courier
          new,monospace">Thanks,<br>
        </div>
        <div class="gmail_default" style="font-family:courier
          new,monospace">Ramki<br>
        </div>
        <div class="gmail_extra"><br>
          <div class="gmail_quote">On Mon, Apr 17, 2017 at 2:29 PM,
            Jonathan Gibbons <span dir="ltr"><<a
                moz-do-not-send="true"
                href="mailto:jonathan.gibbons@oracle.com"
                target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:jonathan.gibbons@oracle.com">jonathan.gibbons@oracle.com</a></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"> <br>
                <br>
                <div
                  class="m_7592252218846305182m_7329919051798114277moz-cite-prefix">On
                  04/17/2017 02:18 PM, Ram Krishnan wrote:<br>
                </div>
                <blockquote type="cite">
                  <div dir="ltr">
                    <div style="font-family:courier new,monospace">Hi,<br>
                      <br>
                    </div>
                    <div style="font-family:courier new,monospace">I
                      have been able to successfully run all the tests
                      in hotspot/test/gc/g1 using jtreg.<br>
                      <br>
                    </div>
                    <div style="font-family:courier new,monospace">The
                      only gotcha I am facing is that the JVM startup
                      options specified in process builder does not have
                      any effect. I have confirmed this through prints
                      in the JVM code base.<br>
                      <br>
                    </div>
                    <div style="font-family:courier new,monospace">For
                      example, <br clear="all">
                    </div>
                    <div>​/hotspot/test/gc/g1/​
                      TestEagerReclaimHumongousRegio<wbr>nsClearMarkBits.java
                      modifies the "-XX:ConcGCThreads=1", but inside the
                      JVM code to value of ConcGCThreads is still zero.<br>
                    </div>
                    <br>
                    <div>​I am new to jtreg and openjdk and probably
                      missing something obvious. Your help would be much
                      appreciated. <br>
                      <br>
                      Thanks in advance,​</div>
                    <div>​Ramki​</div>
                    <br>
                  </div>
                </blockquote>
                <br>
                Ramki,<br>
                <br>
                This does not look like an issue with jtreg, since the
                behavior you are apparently seeing is all within the
                test code and its libraries.<br>
                <br>
                You might want to follow up with the Hotspot team, who
                would have more familiarity with these tests and the
                associated libraries.<br>
                <br>
                -- Jon<br>
                <br>
              </div>
            </blockquote>
          </div>
          <br>
          <br clear="all">
          <br>
          -- <br>
          <div class="m_7592252218846305182gmail_signature"
            data-smartmail="gmail_signature">
            <div dir="ltr">Thanks, 
              <div>Ramki<br>
              </div>
            </div>
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