<div dir="ltr">Thank you for explaining. Is JDK-<span style="font-family:Helvetica;font-size:12px">8014819 visible on publicly available bug tracker?</span></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, May 21, 2013 at 1:05 AM, Jonathan Gibbons <span dir="ltr">&lt;<a href="mailto:jonathan.gibbons@oracle.com" target="_blank">jonathan.gibbons@oracle.com</a>&gt;</span> wrote:<br>
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    <div>... unless you have a big, or very big
      machine.<br>
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      -- Jon<div><div class="h5"><br>
      <br>
      <br>
      On 05/20/2013 04:02 PM, Mike Duigou wrote:<br>
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    <blockquote type="cite">The biggest issue with any concurrency auto or a
      specific number in practice seems to be that VMs are not provided
      a maximum size and are dependent upon the default &quot;VM ergonomics&quot;
      sizing. With default sizing, on most machines you will run out
      memory before you run out of cores.
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      <div>There&#39;s a current effort (JDK-<span style="font-family:Helvetica;font-size:12px">8014819) </span>to
        specify a default VM size to be used by the test vm instances
        which should help things. For the moment I wouldn&#39;t suggest
        using more than CONCURRENCY=4.
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        <div>Mike<br>
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            <div>
              <div>On May 20 2013, at 13:59 , Tomasz Kowalczewski wrote:</div>
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                    <div>Hello,<br>
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                    during a recent &quot;Adopt OpenJDK&quot; event held in Krakow
                    I was using jtreg for running OpenJDK test cases. It
                    was set up as per instructions published here: <a href="https://java.net/projects/adoptopenjdk/pages/InstallJtreg" target="_blank">https://java.net/projects/adoptopenjdk/pages/InstallJtreg</a><br>
                    <br>
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                  OpenJDK repository was cloned from <a href="http://hg.openjdk.java.net/jdk8/tl" target="_blank">http://hg.openjdk.java.net/jdk8/tl</a>
                  and jtreg version was
                  jtreg-4.1-bin-b05_29_nov_2012.zip<br>
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                              <div>I have set &#39;CONCURRENCY=auto&#39;
                                environment variable.<br>
                                <br>
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                              <div>When running a test suite (.e.g.: &#39;cd
                                jdk8_tl/test; make jdk_util&#39;) jtreg
                                spawns a lot of java processes and it
                                seems not to stop. Ever. It uses all 8
                                GB of RAM on my machine at which point
                                Windows starts killing random processes.<br>
                                <br>
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                              <div>With &#39;CONCURRENCY=1&#39; jtreg will spawn
                                only a few java processes and will
                                happily run all the test.<br>
                                <br>
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                              <div>What is the behavior for
                                &#39;CONCURRENCY=auto&#39;? Which value is used
                                as default? Maybe it is not a bug its
                                just that OpenJDK tests should be run on
                                a big server machine with lots of RAM?<br>
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                              <div><br>
                              </div>
                              <div>Any suggestions or pointers to
                                documentation will be very appreciated.<br>
                                <br>
                              </div>
                              <div>-- <br>
                                Regards,<br>
                                Tomasz Kowalczewski
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</blockquote></div><br><br clear="all"><br>-- <br>Tomasz Kowalczewski
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