topic Incorrect VirtualDisk.NumberWriteAveraged from QueryAvailableMetric in vSphere Client SDK Discussions https://communities.vmware.com/t5/vSphere-Client-SDK-Discussions/Incorrect-VirtualDisk-NumberWriteAveraged-from/m-p/1406544#M2714 <HTML><HEAD></HEAD><BODY><P>I've recently been looking over some of the data collected by QueryAvailablePerfMetrics, and I came across some inconsistent data regarding the Disk Write IO metrics, specifically for Virtual Disks - "virtualdisk.numberwriteaveraged.average"&nbsp;</P><SPAN></SPAN><P>I'm seeing values 50-100x what I see in vCenter - I see around 120 max in the performance graph for virtual disks (customized to show number write average) when doing a test of writing from /dev/random to a file, but the API reports 12000+ (not exactly 100x). Interestingly enough, when I do a iostat on the VM and monitor write rate, I don't see it going past 30, which makes me wonder what these numbers mean.</P><SPAN></SPAN><P><SPAN>I'm calling the API (</SPAN><A class="jive-link-external-small" href="https://pubs.vmware.com/vi3/sdk/ReferenceGuide/vim.PerformanceManager.html#queryAvailableMetric" rel="nofollow">https://pubs.vmware.com/vi3/sdk/ReferenceGuide/vim.PerformanceManager.html#queryAvailableMetric</A><SPAN>) using entity = a VM MOR, start time = current time - 1hr, end time = 1hr, interval = PerformanceManagerSummary::getRefreshRate (</SPAN><A class="jive-link-external-small" href="https://www.vmware.com/support/developer/converter-sdk/conv61_apireference/vim.PerformanceManager.ProviderSummary.html#refreshRate" rel="nofollow">https://www.vmware.com/support/developer/converter-sdk/conv61_apireference/vim.PerformanceManager.ProviderSummary.html#refreshRate</A><SPAN>)</SPAN></P><SPAN></SPAN><P>&nbsp;</P><SPAN></SPAN><P>Am I calling the API wrong? Or just misunderstanding the metrics?</P></BODY></HTML> Fri, 07 Dec 2018 22:59:39 GMT dzli 2018-12-07T22:59:39Z Incorrect VirtualDisk.NumberWriteAveraged from QueryAvailableMetric https://communities.vmware.com/t5/vSphere-Client-SDK-Discussions/Incorrect-VirtualDisk-NumberWriteAveraged-from/m-p/1406544#M2714 <HTML><HEAD></HEAD><BODY><P>I've recently been looking over some of the data collected by QueryAvailablePerfMetrics, and I came across some inconsistent data regarding the Disk Write IO metrics, specifically for Virtual Disks - "virtualdisk.numberwriteaveraged.average"&nbsp;</P><SPAN></SPAN><P>I'm seeing values 50-100x what I see in vCenter - I see around 120 max in the performance graph for virtual disks (customized to show number write average) when doing a test of writing from /dev/random to a file, but the API reports 12000+ (not exactly 100x). Interestingly enough, when I do a iostat on the VM and monitor write rate, I don't see it going past 30, which makes me wonder what these numbers mean.</P><SPAN></SPAN><P><SPAN>I'm calling the API (</SPAN><A class="jive-link-external-small" href="https://pubs.vmware.com/vi3/sdk/ReferenceGuide/vim.PerformanceManager.html#queryAvailableMetric" rel="nofollow">https://pubs.vmware.com/vi3/sdk/ReferenceGuide/vim.PerformanceManager.html#queryAvailableMetric</A><SPAN>) using entity = a VM MOR, start time = current time - 1hr, end time = 1hr, interval = PerformanceManagerSummary::getRefreshRate (</SPAN><A class="jive-link-external-small" href="https://www.vmware.com/support/developer/converter-sdk/conv61_apireference/vim.PerformanceManager.ProviderSummary.html#refreshRate" rel="nofollow">https://www.vmware.com/support/developer/converter-sdk/conv61_apireference/vim.PerformanceManager.ProviderSummary.html#refreshRate</A><SPAN>)</SPAN></P><SPAN></SPAN><P>&nbsp;</P><SPAN></SPAN><P>Am I calling the API wrong? Or just misunderstanding the metrics?</P></BODY></HTML> Fri, 07 Dec 2018 22:59:39 GMT https://communities.vmware.com/t5/vSphere-Client-SDK-Discussions/Incorrect-VirtualDisk-NumberWriteAveraged-from/m-p/1406544#M2714 dzli 2018-12-07T22:59:39Z Re:Incorrect VirtualDisk.NumberWriteAveraged from QueryAvailableMetric https://communities.vmware.com/t5/vSphere-Client-SDK-Discussions/Incorrect-VirtualDisk-NumberWriteAveraged-from/m-p/1406545#M2715 <HTML><HEAD></HEAD><BODY><P>Hi,</P><SPAN></SPAN><P>This forum is dedicated to the vSphere Client SDK and APIs. I believe you would get better advice if you post it in the vSphere Management SDK (Web Services SDK) forum where the questions for the mentioned APIs belong.</P><SPAN></SPAN><P>Cheers,</P><SPAN></SPAN><P>Vladi</P></BODY></HTML> Mon, 10 Dec 2018 21:27:54 GMT https://communities.vmware.com/t5/vSphere-Client-SDK-Discussions/Incorrect-VirtualDisk-NumberWriteAveraged-from/m-p/1406545#M2715 _vladi_ 2018-12-10T21:27:54Z Re:Incorrect VirtualDisk.NumberWriteAveraged from QueryAvailableMetric https://communities.vmware.com/t5/vSphere-Client-SDK-Discussions/Incorrect-VirtualDisk-NumberWriteAveraged-from/m-p/1406546#M2716 <HTML><HEAD></HEAD><BODY><P>Thanks for pointing that out, I'll repost in the other forum</P></BODY></HTML> Mon, 10 Dec 2018 22:19:25 GMT https://communities.vmware.com/t5/vSphere-Client-SDK-Discussions/Incorrect-VirtualDisk-NumberWriteAveraged-from/m-p/1406546#M2716 dzli 2018-12-10T22:19:25Z