chap-jvm-opts.xml revision 51607ea01068c9047391e4c8b46bc9dbd0edb7fd
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4ffc423a7df8af7e7d7e563a15471da4505ddeb5ignazio xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
4ffc423a7df8af7e7d7e563a15471da4505ddeb5ignazio xsi:schemaLocation='http://docbook.org/ns/docbook http://docbook.org/xml/5.0/xsd/docbook.xsd'
2578a6d217296401d347302c9104fee179bd0470Francisc Nicolae Bungiu xmlns:xlink='http://www.w3.org/1999/xlink'
2578a6d217296401d347302c9104fee179bd0470Francisc Nicolae Bungiu <para>By default, OpenDJ installs with options appropriate for evaluation, not
4ffc423a7df8af7e7d7e563a15471da4505ddeb5ignazio for production.</para>
4ffc423a7df8af7e7d7e563a15471da4505ddeb5ignazio <indexterm><primary>Java</primary><secondary>Settings</secondary></indexterm>
d25c69509848853b0b15b93e3cc180cab81047acChristian Maeder <variablelist>
c7d44bc923b7eb1a01abd095cd004030fee589eanotanartist <para>You can change JVM options for the server in the QuickStart installer,
4efb09a1f46a0b322633b729c9a9fd50bf270125Christian Maeder and alternatively using the Control Panel (Runtime Options > Java Settings),
b1d1bda618f7b145c28645f39b0ca651b8001ebanotanartist or with the <command>dsjavaproperties</command> command after editing the
4efb09a1f46a0b322633b729c9a9fd50bf270125Christian Maeder <filename>config/java.properties</filename> file.</para>
2e08f62eab7a9bd9becf08ce32871a39306e4798Szaben <varlistentry>
ae0124755bed317b3e11afe1c6275fdb488807acnotanartist <para>The JVM heap size by default is either 256 MB or 1 GB.</para>
d25c69509848853b0b15b93e3cc180cab81047acChristian Maeder <para>In production, use at least a 2 GB heap (-Xms2G -Xmx2G).</para>
d25c69509848853b0b15b93e3cc180cab81047acChristian Maeder </varlistentry>
4ffc423a7df8af7e7d7e563a15471da4505ddeb5ignazio <varlistentry>
4ffc423a7df8af7e7d7e563a15471da4505ddeb5ignazio <para>Use -server to select the HotSpot Server VM.</para>
4ffc423a7df8af7e7d7e563a15471da4505ddeb5ignazio </listitem>
6f52b2f195d946649597c21e5888c70ccfeeb81eChristian Maeder </varlistentry>
4ffc423a7df8af7e7d7e563a15471da4505ddeb5ignazio <varlistentry>
c1cca90cf3d763a48705ddaeeffb3c2d82e9e37eSimon Ulbricht <para>For heap sizes over 4 GB on 64-bit systems use -d64.</para>
4ffc423a7df8af7e7d7e563a15471da4505ddeb5ignazio </varlistentry>
4ffc423a7df8af7e7d7e563a15471da4505ddeb5ignazio <varlistentry>
c1cca90cf3d763a48705ddaeeffb3c2d82e9e37eSimon Ulbricht <para>Use -XX:+UseConcMarkSweepGC to select the CMS garbage collector
4ffc423a7df8af7e7d7e563a15471da4505ddeb5ignazio for low GC pause times.</para>
2e08f62eab7a9bd9becf08ce32871a39306e4798Szaben </listitem>
c1cca90cf3d763a48705ddaeeffb3c2d82e9e37eSimon Ulbricht </varlistentry>
c1cca90cf3d763a48705ddaeeffb3c2d82e9e37eSimon Ulbricht <varlistentry>
43f8464f7a29c9609509b9c58925f0432263803dSimon Ulbricht <para>If your directory handles high throughput, set the new generation
4efb09a1f46a0b322633b729c9a9fd50bf270125Christian Maeder size large enough for the JVM to avoid promoting short-lived objects
ea200f8484810ec6d7436f8c1b8286e7e61f4551notanartist into the old gen space (-XX:NewSize=512M).</para>
4ffc423a7df8af7e7d7e563a15471da4505ddeb5ignazio </varlistentry>
4ffc423a7df8af7e7d7e563a15471da4505ddeb5ignazio </variablelist>