https://community.netapp.com/t5/Software-Development-Kit-SDK-and-API-Discussions/What-is-performance-counter-rollover-How-do-we-determine-the-maximum-value-for-a/m-p/29140#M897 <P>What is performance counter rollover? How do we determine the maximum value that can be returned for a counter. E.g read_data or read_latency what are the maximum values that would be returned ?</P> Thu, 05 Jun 2025 05:32:09 GMT mitchellcipriano 2025-06-05T05:32:09Z https://community.netapp.com/t5/Software-Development-Kit-SDK-and-API-Discussions/What-is-performance-counter-rollover-How-do-we-determine-the-maximum-value-for-a/m-p/29140#M897 <P>What is performance counter rollover? How do we determine the maximum value that can be returned for a counter. E.g read_data or read_latency what are the maximum values that would be returned ?</P> Thu, 05 Jun 2025 05:32:09 GMT https://community.netapp.com/t5/Software-Development-Kit-SDK-and-API-Discussions/What-is-performance-counter-rollover-How-do-we-determine-the-maximum-value-for-a/m-p/29140#M897 mitchellcipriano 2025-06-05T05:32:09Z https://community.netapp.com/t5/Software-Development-Kit-SDK-and-API-Discussions/What-is-performance-counter-rollover-How-do-we-determine-the-maximum-value-for-a/m-p/105969#M1514 <P>There is a PDF document with a table for DataONTAP 7.3 (sic!) stating that read_data has a size of <EM>8B</EM>. So probably the size is 8 Bytes. But it would be nice to get this confirmed and updated from NetApp!</P><P>&nbsp;</P><P>Douments name and chapter is: &nbsp;<EM>NetApp® Unified Storage Performance Management Using Open Interfaces,&nbsp;Appendix 1 - Performance counters in Data ONTAP 7.3</EM></P> Tue, 09 Jun 2015 06:39:31 GMT https://community.netapp.com/t5/Software-Development-Kit-SDK-and-API-Discussions/What-is-performance-counter-rollover-How-do-we-determine-the-maximum-value-for-a/m-p/105969#M1514 ingolantschner 2015-06-09T06:39:31Z