forked from docs/doc-exports
Yang, Tong
3b1f73dece
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com> Co-authored-by: Yang, Tong <yangtong2@huawei.com> Co-committed-by: Yang, Tong <yangtong2@huawei.com>
75 lines
11 KiB
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75 lines
11 KiB
HTML
<a name="ALM-44006"></a><a name="ALM-44006"></a>
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<h1 class="topictitle1">ALM-44006 Presto Worker Process GC Time Exceeds the Threshold</h1>
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<div id="body1597222804747"><div class="section" id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_section43920869"><h4 class="sectiontitle">Description</h4><p id="ALM-44006__en-us_topic_0225312713_p14214871111947">The system collects GC time of the Presto Worker process every 30 seconds. This alarm is generated when the GC time exceeds the threshold (exceeds 5 seconds for three consecutive times). You can change the threshold by choosing <strong id="ALM-44006__b186421179933618">System</strong> > <strong id="ALM-44006__b168921652533618">Configure Alarm Threshold</strong> > <strong id="ALM-44006__b179834132733618">Service</strong> > <strong id="ALM-44006__b135771131333618">Presto</strong> > <strong id="ALM-44006__b140259321433618">Worker</strong> > <strong id="ALM-44006__b127672852633618">Presto Garbage Collection Time</strong> > <strong id="ALM-44006__b60087128833618">Garbage Collection Time of the Worker Process</strong> on MRS Manager. This alarm is cleared when the Worker process GC time is shorter than or equal to the threshold.</p>
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</div>
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<div class="section" id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_section59743502"><h4 class="sectiontitle">Attribute</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_table64843092" frame="border" border="1" rules="all"><thead align="left"><tr id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_row10409628"><th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.1.4.1.1"><p id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_p37873528">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-44006__en-us_topic_0225312713_en-us_topic_0087039425_p47856888">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-44006__en-us_topic_0225312713_en-us_topic_0087039425_p51202692">Auto Clear</p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_row53777413"><td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.1 "><p id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_p61003235">44006</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-44006__en-us_topic_0225312713_en-us_topic_0087039425_p42315013">Major</p>
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</td>
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<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.3 "><p id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_p4964052">Yes</p>
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</tbody>
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</table>
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</div>
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</div>
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<div class="section" id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_section820607"><h4 class="sectiontitle">Parameter</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_table66543927" frame="border" border="1" rules="all"><thead align="left"><tr id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_row61284534"><th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.3.2.1.3.1.1"><p id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_p65100236">Parameter</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-44006__en-us_topic_0225312713_en-us_topic_0087039425_p38627770">Description</p>
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</th>
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</thead>
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<tbody><tr id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_row41841705"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_p33734977">ServiceName</p>
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</td>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_p48178601">Service for which the alarm is generated.</p>
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<tr id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_row30954226"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_p24264406">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-44006__en-us_topic_0225312713_en-us_topic_0087039425_p19259870">Role for which the alarm is generated.</p>
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</td>
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</tr>
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<tr id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_row39121107"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_p14693133">HostName</p>
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</td>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_p49293152">Host for which the alarm is generated.</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div class="section" id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_section7385465"><h4 class="sectiontitle">Impact on the System</h4><p id="ALM-44006__en-us_topic_0225312713_p483618718401">If the GC time of the Worker process is too long, the Worker process running performance will be affected and the Worker process will even be unavailable.</p>
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</div>
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<div class="section" id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_section66469189"><h4 class="sectiontitle">Possible Causes</h4><p id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_p14756206">The heap memory of the Worker process is overused or inappropriately allocated, causing frequent occurrence of the GC process.</p>
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</div>
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<div class="section" id="ALM-44006__section1332084625520"><h4 class="sectiontitle">Procedure</h4><ol id="ALM-44006__en-us_topic_0225312713_ol1583131612394"><li id="ALM-44006__en-us_topic_0225312713_li1183616163916"><span>Check the GC time.</span><p><ol type="a" id="ALM-44006__en-us_topic_0225312713_ol1283131616392"><li id="ALM-44006__en-us_topic_0225312713_li1383101619394">Go to the cluster details page and choose <strong id="ALM-44006__b101559920833618">Alarms</strong>.<div class="note" id="ALM-44006__note1280181615349"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="ALM-44006__p1628021620345">For MRS 1.8.10 or earlier, log in to MRS Manager and choose <strong id="ALM-44006__b124519185329">Alarms</strong>.</p>
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</div></div>
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</li><li id="ALM-44006__en-us_topic_0225312713_li683191618399">Select the alarm whose <strong id="ALM-44006__b182096138933618">Alarm ID</strong> is <strong id="ALM-44006__b160878688933618">44006</strong>. Then check the role name in <strong id="ALM-44006__b14790172183618">Location </strong>and confirm the IP adress of the instance.</li><li id="ALM-44006__en-us_topic_0225312713_li118311617390">Choose <strong id="ALM-44006__b166173009733618">Components</strong> > <strong id="ALM-44006__b51617124733618">Presto</strong> > <strong id="ALM-44006__b116695009333618">Instances</strong> > <strong id="ALM-44006__b109994065633618">Worker</strong> (business IP address of the instance for which the alarm is generated) > <strong id="ALM-44006__b210247994133618">Customize</strong> > <strong id="ALM-44006__b111607126133618">Presto Garbage Collection Time</strong>. Click <strong id="ALM-44006__b121692284833618">OK</strong> to view the GC time.</li><li id="ALM-44006__en-us_topic_0225312713_li1484131683916">Check whether the GC time of the Worker process is longer than 5 seconds.<ul id="ALM-44006__en-us_topic_0225312713_ul4848161396"><li id="ALM-44006__en-us_topic_0225312713_li148471663915">If yes, go to <a href="#ALM-44006__en-us_topic_0225312713_li3841416113916">1.e</a>.</li><li id="ALM-44006__en-us_topic_0225312713_li7841816123918">If no, go to <a href="#ALM-44006__en-us_topic_0225312713_li572522141314">2</a>.</li></ul>
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</li><li id="ALM-44006__en-us_topic_0225312713_li3841416113916"><a name="ALM-44006__en-us_topic_0225312713_li3841416113916"></a><a name="en-us_topic_0225312713_li3841416113916"></a>Choose <strong id="ALM-44006__b175783987233618">Components</strong> > <strong id="ALM-44006__b82958229333618">Presto</strong> > <strong id="ALM-44006__b203514328033618">Service Configuration</strong>, and switch <strong id="ALM-44006__b184896478333618">Basic</strong> to <strong id="ALM-44006__b84296906733618">All</strong>, and choose <strong id="ALM-44006__b27160338633618">Presto</strong> > <strong id="ALM-44006__b12542172633618">Worker</strong> Increase the value of <strong id="ALM-44006__b147790997733618">-Xmx</strong> (maximum heap memory) in the <strong id="ALM-44006__b66774593333618">JAVA_OPTS</strong> parameter based on the site requirements.</li><li id="ALM-44006__en-us_topic_0225312713_li78461613911">Check whether the alarm is cleared.<ul id="ALM-44006__en-us_topic_0225312713_ul19842169397"><li id="ALM-44006__en-us_topic_0225312713_li10841169396">If yes, no further action is required.</li><li id="ALM-44006__en-us_topic_0225312713_li15841816153917">If no, go to <a href="#ALM-44006__en-us_topic_0225312713_li572522141314">2</a>.</li></ul>
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</li></ol>
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</p></li><li id="ALM-44006__en-us_topic_0225312713_li572522141314"><a name="ALM-44006__en-us_topic_0225312713_li572522141314"></a><a name="en-us_topic_0225312713_li572522141314"></a><span>Collect fault information.</span><p><ol type="a" id="ALM-44006__en-us_topic_0225312713_en-us_topic_0191813935_ol6089206913036"><li id="ALM-44006__en-us_topic_0225312713_en-us_topic_0191813935_li4478836213036">On MRS Manager, choose <span class="menucascade" id="ALM-44006__menucascade200789414333618"><b><span class="uicontrol" id="ALM-44006__uicontrol195176520633618">System</span></b> > <b><span class="uicontrol" id="ALM-44006__uicontrol143221281033618">Export Log</span></b></span>.</li><li id="ALM-44006__li18574327401">Call the OTC Customer Hotline for support.<p id="ALM-44006__zh-cn_topic_0225312713_zh-cn_topic_0191813935_p1241007591725"><a name="ALM-44006__li18574327401"></a><a name="li18574327401"></a>Germany: 0800 330 44 44</p>
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<p id="ALM-44006__zh-cn_topic_0225312713_zh-cn_topic_0191813935_p4458181891725">International: +800 44556600</p>
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</li></ol>
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</p></li></ol>
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</div>
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<div class="section" id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_section15295265"><h4 class="sectiontitle">Reference</h4><p id="ALM-44006__en-us_topic_0225312713_en-us_topic_0087039425_p7510612">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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