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Yang, Tong
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Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com> Reviewed-by: Rechenburg, Matthias <matthias.rechenburg@t-systems.com> Co-authored-by: Yang, Tong <yangtong2@huawei.com> Co-committed-by: Yang, Tong <yangtong2@huawei.com>
86 lines
12 KiB
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86 lines
12 KiB
HTML
<a name="ALM-23006"></a><a name="ALM-23006"></a>
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<h1 class="topictitle1">ALM-23006 Loader Direct Memory Usage Exceeds the Threshold</h1>
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<div id="body17974536"><div class="section" id="ALM-23006__s7d68dfcab73f4abd874c344ebd64a829"><h4 class="sectiontitle">Description</h4><p id="ALM-23006__en-us_topic_0070543530_p6429">The system checks the direct memory usage of the Loader service every 30 seconds. The alarm is generated when the direct memory usage of a Loader instance exceeds the threshold (80% of the maximum memory) for 5 consecutive times. The alarm is cleared when the direct memory usage of Loader is less than or equal to the threshold.</p>
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<div class="section" id="ALM-23006__sf2b683c118314fa08f864ce90f8f3686"><h4 class="sectiontitle">Attribute</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="ALM-23006__en-us_topic_0070543530_table520801" frame="border" border="1" rules="all"><thead align="left"><tr id="ALM-23006__en-us_topic_0070543530_row18075054"><th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.1.4.1.1"><p id="ALM-23006__en-us_topic_0070543530_p54793251">Alarm ID</p>
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<th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.1.4.1.2"><p id="ALM-23006__en-us_topic_0070543530_p9068361">Alarm Severity</p>
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<th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.1.4.1.3"><p id="ALM-23006__en-us_topic_0070543530_p63448647">Automatically Cleared</p>
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<tbody><tr id="ALM-23006__en-us_topic_0070543530_row39066822"><td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.1 "><p id="ALM-23006__en-us_topic_0070543530_p10296046">23006</p>
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<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.2 "><p id="ALM-23006__en-us_topic_0070543530_p28673382">Major</p>
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<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.3 "><p id="ALM-23006__en-us_topic_0070543530_p40842582">Yes</p>
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<div class="section" id="ALM-23006__s2cfb76c7097644edbea49c06a84aa516"><h4 class="sectiontitle">Parameters</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="ALM-23006__en-us_topic_0070543530_table19914855" frame="border" border="1" rules="all"><thead align="left"><tr id="ALM-23006__en-us_topic_0070543530_row3679585"><th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.3.2.1.3.1.1"><p id="ALM-23006__en-us_topic_0070543530_p29610967">Name</p>
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<th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.3.2.1.3.1.2"><p id="ALM-23006__en-us_topic_0070543530_p49678097">Meaning</p>
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<tbody><tr id="ALM-23006__row177221930293"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-23006__p192431315431">Source</p>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="ALM-23006__p692551319435">Specifies the cluster for which the alarm is generated.</p>
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<tr id="ALM-23006__en-us_topic_0070543530_row64502903"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-23006__en-us_topic_0070543530_p57352691">ServiceName</p>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="ALM-23006__en-us_topic_0070543530_p15056362">Specifies the service for which the alarm is generated.</p>
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<tr id="ALM-23006__en-us_topic_0070543530_row1289536"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-23006__en-us_topic_0070543530_p37343614">RoleName</p>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="ALM-23006__en-us_topic_0070543530_p4933868">Specifies the role for which the alarm is generated.</p>
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<tr id="ALM-23006__en-us_topic_0070543530_row44404812"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-23006__en-us_topic_0070543530_p40020038">HostName</p>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="ALM-23006__en-us_topic_0070543530_p20397636">Specifies the host for which the alarm is generated.</p>
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<tr id="ALM-23006__en-us_topic_0070543530_row49361000"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-23006__en-us_topic_0070543530_p38818088">Trigger Condition</p>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="ALM-23006__en-us_topic_0070543530_p57257441">Specifies the threshold triggering the alarm. If the current indicator value exceeds this threshold, the alarm is generated.</p>
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</table>
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</div>
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<div class="section" id="ALM-23006__sb0fec6ea64eb4b1d92cb39728bcdf56b"><h4 class="sectiontitle">Impact on the System</h4><p id="ALM-23006__en-us_topic_0070543530_p7341114">The direct memory overflow may cause a service breakdown.</p>
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<div class="section" id="ALM-23006__se50eae2ef65147faace27f6e3c0a2a76"><h4 class="sectiontitle">Possible Causes</h4><p id="ALM-23006__en-us_topic_0070543530_p57759323">The direct memory of the Loader instance is overused or the direct memory is inappropriately allocated.</p>
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<div class="section" id="ALM-23006__s417604f6549b4fcabed614ce27d7adc2"><h4 class="sectiontitle">Procedure</h4><p id="ALM-23006__en-us_topic_0070543530_p47993581"><strong id="ALM-23006__b531573088450">Check direct memory usage.</strong></p>
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<ol id="ALM-23006__en-us_topic_0070543530_ol29289047"><li id="ALM-23006__en-us_topic_0070543530_li62274839"><span>On the <span id="ALM-23006__text34789336432">MRS</span> Manager portal, choose <strong id="ALM-23006__b143806633814">O&M </strong>><strong id="ALM-23006__b15672686389"> Alarm </strong>><strong id="ALM-23006__b3672583385"> Alarms</strong> > <strong id="ALM-23006__en-us_topic_0070543530_b11097218">Loader Direct Memory Usage Exceeds the Threshold</strong> > <strong id="ALM-23006__en-us_topic_0070543530_b32766103">Location</strong>. Check the host name of the instance involved in this alarm.</span></li><li id="ALM-23006__en-us_topic_0070543530_li26459478"><span>On the <span id="ALM-23006__text19211104714118">MRS</span> Manager portal, choose<strong id="ALM-23006__b161244914158"> Cluster</strong> ><em id="ALM-23006__i146755821120"> Name of the desired cluster</em> > <strong id="ALM-23006__b4692965417821">Services</strong> > <strong id="ALM-23006__b1885262711285">Loader</strong> > <strong id="ALM-23006__b4320561417821">Instance</strong>. Click the instance for which the alarm is generated to go to the page for the instance. Click the drop-down menu in the chart area and choose <strong id="ALM-23006__b6942205911303">Customize</strong> > <strong id="ALM-23006__b1668141513312">Memory</strong> > <strong id="ALM-23006__b194871911122618">Loader Memory Usage Statistics</strong>. Click <strong id="ALM-23006__b8582131112614">OK</strong>.</span></li><li id="ALM-23006__en-us_topic_0070543530_li28008429"><span>Check whether the used direct memory of Loader reaches the threshold (the default value is 80% of the maximum direct memory) specified for Loader.</span><p><ul id="ALM-23006__en-us_topic_0070543530_ul50749272"><li id="ALM-23006__en-us_topic_0070543530_li54090270">If yes, go to <a href="#ALM-23006__en-us_topic_0070543530_li79703172532">4</a>.</li><li id="ALM-23006__en-us_topic_0070543530_li19235715">If no, go to <a href="#ALM-23006__en-us_topic_0070543530_d0e42442">6</a>.</li></ul>
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</p></li><li id="ALM-23006__en-us_topic_0070543530_li79703172532"><a name="ALM-23006__en-us_topic_0070543530_li79703172532"></a><a name="en-us_topic_0070543530_li79703172532"></a><span>On the <span id="ALM-23006__text2668194810112">MRS</span> Manager portal, choose <strong id="ALM-23006__b205273101458">Cluster </strong>><em id="ALM-23006__i98415348150"> Name of the desired cluster</em> ><strong id="ALM-23006__b10527161018451"> Services</strong> > <strong id="ALM-23006__en-us_topic_0070543530_b40863243">Loader</strong> > <strong id="ALM-23006__en-us_topic_0070543530_b32224867">Configurations</strong>. Click <strong id="ALM-23006__en-us_topic_0070543530_b60077419">All Configurations</strong>. Search <strong id="ALM-23006__en-us_topic_0070543530_b3825860">LOADER_GC_OPTS</strong> in the search box. Increase the value of <strong id="ALM-23006__en-us_topic_0070543530_b34432747">-XX:MaxDirectMemorySize</strong> as required, and click <strong id="ALM-23006__en-us_topic_0070543530_b41459272">Save</strong>. Click <strong id="ALM-23006__en-us_topic_0070543530_b2757872">OK</strong>.</span><p><div class="note" id="ALM-23006__note163168504384"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="ALM-23006__p1429265254610">If this alarm is generated, the direct memory configured for the current Loader instance is insufficient for the service scenario. You are advised to open the instance monitoring page, display the Loader direct memory resource status monitoring chart, and observe the change trend of the direct memory used by Loader in the monitoring chart. Then change the value of <strong id="ALM-23006__b1283913426120">-XX:MaxDirectMemorySize</strong> to twice the current direct memory usage or to another value to meet site requirements.</p>
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</div></div>
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</p></li><li id="ALM-23006__en-us_topic_0070543530_li24820853"><span>Restart the affected services or instances and check whether the alarm is cleared.</span><p><ul id="ALM-23006__en-us_topic_0070543530_ul22061093"><li id="ALM-23006__en-us_topic_0070543530_li64332111">If yes, no further action is required.</li><li id="ALM-23006__en-us_topic_0070543530_li42118094">If no, go to <a href="#ALM-23006__en-us_topic_0070543530_d0e42442">6</a>.</li></ul>
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</p></li></ol>
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<p id="ALM-23006__en-us_topic_0070543530_p56122452"><strong id="ALM-23006__b453354958455">Collect fault information.</strong></p>
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<ol start="6" id="ALM-23006__ol473749318458"><li id="ALM-23006__en-us_topic_0070543530_d0e42442"><a name="ALM-23006__en-us_topic_0070543530_d0e42442"></a><a name="en-us_topic_0070543530_d0e42442"></a><span>On the <span id="ALM-23006__text2147165041111">MRS</span> Manager portal, choose <strong id="ALM-23006__b476161124614">O&M</strong> > <strong id="ALM-23006__b145775994515">Log </strong>><strong id="ALM-23006__b357059114514"> Download</strong>.</span></li><li id="ALM-23006__en-us_topic_0070543530_li4753596"><span>Select <strong id="ALM-23006__en-us_topic_0070543530_b42782368">Loader</strong> in the required cluster from the <strong id="ALM-23006__en-us_topic_0070543530_b49496992">Service</strong> drop-down list.</span></li><li id="ALM-23006__li1145664103113"><span>Click <span><img id="ALM-23006__image1945644173117" src="en-us_image_0000001532767578.png"></span> in the upper right corner, and set <strong id="ALM-23006__b6456941173117">Start Date</strong> and <strong id="ALM-23006__b11456154113318">End Date</strong> for log collection to 10 minutes ahead of and after the alarm generation time, respectively. Then, click <strong id="ALM-23006__b13456164113319">Download</strong>.</span></li><li id="ALM-23006__en-us_topic_0070543530_li2852273"><span>Contact the <span id="ALM-23006__text4614151421417">O&M personnel</span> and send the collected fault logs.</span></li></ol>
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</div>
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<div class="section" id="ALM-23006__section1529716184534"><h4 class="sectiontitle">Alarm Clearing</h4><p id="ALM-23006__p4677152685316">After the fault is rectified, the system automatically clears this alarm.</p>
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<div class="section" id="ALM-23006__section12776143713493"><h4 class="sectiontitle">Related Information</h4><p id="ALM-23006__p1495823754913">None</p>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="mrs_01_1298.html">Alarm Reference (Applicable to MRS 3.x)</a></div>
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