<h2>Memory degradation caused by high number of "Service Mapping Recomputation" jobs</h2><br/><div style="overflow-x:auto"><article><div ><h3 >Issue </h3><section><h4>By default, there are 4 "Service Mapping Recomputation" jobs per node, on the instance. </h4> <h4>When these jobs run for longer time they impact memory. <br /><br /><br /></h4></section></div><div ><h3 >Cause</h3><section><h4><strong>High memory consumption due to multiple of these jobs run for a long period of time, and instance becomes slow and heavy.</strong><br /><br /><strong>We saw that lowering the number of jobs to 2 per node, performance improve significantly.</strong><br /><br /></h4></section></div><div ><h3 >Resolution</h3><section><h4>Lowering <strong>that to 1 improves performance even more.</strong></h4> <pre><strong>1) Go to the "System Properties" list (<a href="https://%3Cinstance%3E.service-now.com/sys_properties_list.do">https://<instance>.service-now.com/sys_properties_list.do</a>) <br /><br />2) Check if these properties exist</strong><br /><strong>- glide.service_mapping.recomputation.job_count</strong><br /><strong>- glide.service_mapping.fast_recomputation.job_count<br /><br /></strong><strong>3) If yes, please set the value of both properties to 1 and update the record.</strong><br /><br /><strong>4) If these properties do not exist, click New </strong><br /><strong>a) Fill out: </strong><br /><strong>Name ==> glide.service_mapping.recomputation.job_count</strong><br /><strong>Type: Integer</strong><br /><strong>Value: 1 <br /><br />b) Save<br /><br />5) Click New<br />a) Fill out:<br />Name ==> glide.service_mapping.fast_recomputation.job_count<br />Type: Integer<br />Value: 1<br /><br /></strong><strong>b) Save </strong></pre></section></div><div ><h3 >Related Links</h3><section><ul style="list-style-position: inside;"><li><a href="https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB1001151" target="_blank" rel="noopener noreferrer">KB1001151 - Service Mapping Recomputation Jobs: Configuration and Best Practices</a></li></ul></section></div></article></div>