https://community.qlik.com/t5/Official-Support-Articles/QlikView-Distribution-Service-Publisher-QDS-high-CPU-usage/ta-p/1714555 <P>The QlikView Distribution Service (QDS) is consuming a high percentage of overall CPU capacity. &nbsp;No tasks are actively running.&nbsp;</P> <P><SPAN>High Memory Handles in task manager for Qlikview Distribution Service are observed.</SPAN></P> <P>&nbsp;</P> <H4><FONT color="#339966"><STRONG>Environment:</STRONG></FONT></H4> <DIV style="margin-left: 40px;"><LI-PRODUCT title="QlikView" id="qlikView"></LI-PRODUCT>&nbsp;</DIV> <P>&nbsp;</P> <P>All tasks will be checked no matter if they are enabled or disabled every 500ms in general, the auto adjustment option is not working good when a large number of tasks are disabled or not properly setup.<BR /><BR />Risks for high cpu usage are caused by:</P> <UL> <LI>large number of disabled tasks,</LI> <LI>enabled tasks but no source document connected to it.</LI> <LI>a fresh QVPR restore, but unfinished setup</LI> </UL> <P>&nbsp;</P> <H3 class="qlik-migrated-tkb-headings"><FONT color="#339966"><STRONG>Resolution:</STRONG></FONT></H3> <P><BR />Task files need to be updated regularly. It is possible to adjust the number of tasks updated per thread.</P> <OL> <LI>Stop the <STRONG>QlikView Distribution Service</STRONG></LI> <LI>Navigate to <FONT face="courier new,courier">C:\Program Files\QlikView\Distribution Service\DistributionService.exe.config</FONT></LI> <LI>Open the file in a text editor <STRONG>with elevated permissions</STRONG>.<BR /><BR /><STRONG>Option 1:</STRONG> Locate the below setting, or add it: <BR /><LI-CODE lang="markup">&lt;!-- Time to pause between task result cache updates, in milliseconds. --&gt; &lt;add key="TaskResultCacheUpdateSleepTimeBetweenUpdates" value="200"/&gt;​</LI-CODE><BR />Change the value to 1000, which is 1 sec, do not use a higher value than that.<BR /><BR /><STRONG>Option 2</STRONG> (if the first one does not show results):<BR /><LI-CODE lang="markup">&lt;!-- Max number of tasks per thread updating the task result cache. Value less than one (1) enabled automatic calibration. --&gt; &lt;add key="TaskResultCacheUpdateMaxTasksPerThread" value="0"/&gt;​</LI-CODE><BR />Raise the value to lower the baseline QDS CPU consumption.&nbsp; A starting value can be a slightly higher number than the total number of tasks in the deployment.<BR /><BR /></LI> <LI><STRONG>Save</STRONG> the file</LI> <LI>Start the <STRONG>QlikView Distribution Service</STRONG></LI> </OL> Wed, 08 Dec 2021 11:58:57 GMT Sonja_Bauernfeind 2021-12-08T11:58:57Z https://community.qlik.com/t5/Official-Support-Articles/QlikView-Distribution-Service-Publisher-QDS-high-CPU-usage/ta-p/1714555 <P>The QlikView Distribution Service (QDS) is consuming a high percentage of overall CPU capacity. &nbsp;No tasks are actively running.&nbsp;</P> <P><SPAN>High Memory Handles in task manager for Qlikview Distribution Service are observed.</SPAN></P> <P>&nbsp;</P> <H4><FONT color="#339966"><STRONG>Environment:</STRONG></FONT></H4> <DIV style="margin-left: 40px;"><LI-PRODUCT title="QlikView" id="qlikView"></LI-PRODUCT>&nbsp;</DIV> <P>&nbsp;</P> <P>All tasks will be checked no matter if they are enabled or disabled every 500ms in general, the auto adjustment option is not working good when a large number of tasks are disabled or not properly setup.<BR /><BR />Risks for high cpu usage are caused by:</P> <UL> <LI>large number of disabled tasks,</LI> <LI>enabled tasks but no source document connected to it.</LI> <LI>a fresh QVPR restore, but unfinished setup</LI> </UL> <P>&nbsp;</P> <H3 class="qlik-migrated-tkb-headings"><FONT color="#339966"><STRONG>Resolution:</STRONG></FONT></H3> <P><BR />Task files need to be updated regularly. It is possible to adjust the number of tasks updated per thread.</P> <OL> <LI>Stop the <STRONG>QlikView Distribution Service</STRONG></LI> <LI>Navigate to <FONT face="courier new,courier">C:\Program Files\QlikView\Distribution Service\DistributionService.exe.config</FONT></LI> <LI>Open the file in a text editor <STRONG>with elevated permissions</STRONG>.<BR /><BR /><STRONG>Option 1:</STRONG> Locate the below setting, or add it: <BR /><LI-CODE lang="markup">&lt;!-- Time to pause between task result cache updates, in milliseconds. --&gt; &lt;add key="TaskResultCacheUpdateSleepTimeBetweenUpdates" value="200"/&gt;​</LI-CODE><BR />Change the value to 1000, which is 1 sec, do not use a higher value than that.<BR /><BR /><STRONG>Option 2</STRONG> (if the first one does not show results):<BR /><LI-CODE lang="markup">&lt;!-- Max number of tasks per thread updating the task result cache. Value less than one (1) enabled automatic calibration. --&gt; &lt;add key="TaskResultCacheUpdateMaxTasksPerThread" value="0"/&gt;​</LI-CODE><BR />Raise the value to lower the baseline QDS CPU consumption.&nbsp; A starting value can be a slightly higher number than the total number of tasks in the deployment.<BR /><BR /></LI> <LI><STRONG>Save</STRONG> the file</LI> <LI>Start the <STRONG>QlikView Distribution Service</STRONG></LI> </OL> Wed, 08 Dec 2021 11:58:57 GMT https://community.qlik.com/t5/Official-Support-Articles/QlikView-Distribution-Service-Publisher-QDS-high-CPU-usage/ta-p/1714555 Sonja_Bauernfeind 2021-12-08T11:58:57Z https://community.qlik.com/t5/Official-Support-Articles/QlikView-Distribution-Service-Publisher-QDS-high-CPU-usage/tac-p/1996876#M7611 <P>What happens if I lower the value of TaskResultCacheUpdateSleepTimeBetweenUpdates from 200?</P> Wed, 26 Oct 2022 05:37:13 GMT https://community.qlik.com/t5/Official-Support-Articles/QlikView-Distribution-Service-Publisher-QDS-high-CPU-usage/tac-p/1996876#M7611 qwebnm 2022-10-26T05:37:13Z