topic How to interpret high latency and write_data on a volume? in Active IQ Unified Manager Discussions https://community.netapp.com/t5/Active-IQ-Unified-Manager-Discussions/How-to-interpret-high-latency-and-write-data-on-a-volume/m-p/69034#M14398 <HTML><HEAD></HEAD><BODY><P>the filer has very high avg_latency, come with very high write_latency, but read_ latency is okay. It happens at about the same time everyday, and with the same patten of similar peak value and last for same length of the time,&nbsp; we know this is caused by&nbsp; the backup. However, We are wondering about why write_latency is so high, Then we checked write_data graph which doesn't so obviously matching write_latency, or happened not at the same time.</P><P></P><P>1.&nbsp;&nbsp;&nbsp;&nbsp; Does high write_latency necessarily mean that we have a lot of writes?</P><P>2.&nbsp;&nbsp;&nbsp;&nbsp; How high write_latency is related write_data counter, As we have high write_latency,&nbsp; if meanwhile a higher write_data counter should been seen as well?, and why?&nbsp; </P><P>Thanks!</P></BODY></HTML> Thu, 05 Jun 2025 05:52:46 GMT netappmagic 2025-06-05T05:52:46Z How to interpret high latency and write_data on a volume? https://community.netapp.com/t5/Active-IQ-Unified-Manager-Discussions/How-to-interpret-high-latency-and-write-data-on-a-volume/m-p/69034#M14398 <HTML><HEAD></HEAD><BODY><P>the filer has very high avg_latency, come with very high write_latency, but read_ latency is okay. It happens at about the same time everyday, and with the same patten of similar peak value and last for same length of the time,&nbsp; we know this is caused by&nbsp; the backup. However, We are wondering about why write_latency is so high, Then we checked write_data graph which doesn't so obviously matching write_latency, or happened not at the same time.</P><P></P><P>1.&nbsp;&nbsp;&nbsp;&nbsp; Does high write_latency necessarily mean that we have a lot of writes?</P><P>2.&nbsp;&nbsp;&nbsp;&nbsp; How high write_latency is related write_data counter, As we have high write_latency,&nbsp; if meanwhile a higher write_data counter should been seen as well?, and why?&nbsp; </P><P>Thanks!</P></BODY></HTML> Thu, 05 Jun 2025 05:52:46 GMT https://community.netapp.com/t5/Active-IQ-Unified-Manager-Discussions/How-to-interpret-high-latency-and-write-data-on-a-volume/m-p/69034#M14398 netappmagic 2025-06-05T05:52:46Z Re: How to interpret high latency and write_data on a volume? https://community.netapp.com/t5/Active-IQ-Unified-Manager-Discussions/How-to-interpret-high-latency-and-write-data-on-a-volume/m-p/69038#M14400 <HTML><HEAD></HEAD><BODY><P>Can anybody please share your ideas here?</P></BODY></HTML> Fri, 04 Oct 2013 11:43:41 GMT https://community.netapp.com/t5/Active-IQ-Unified-Manager-Discussions/How-to-interpret-high-latency-and-write-data-on-a-volume/m-p/69038#M14400 netappmagic 2013-10-04T11:43:41Z