You are right, Thanks a lot Brian. rate(windows_logical_disk_read_write_latency_seconds_total[10s]) / (rate(windows_logical_disk_reads_total[10s]) + rate(windows_logical_disk_writes_total[10s]))
On Thursday, December 28, 2023 at 6:44:28 PM UTC+3 Brian Candler wrote: > Probably because you need to divide by the average number of operations > per second done in that time window. > > I can't give you the specifics for windows_exporter, but I can for Linux > node_exporter: > > https://brian-candler.medium.com/interpreting-prometheus-metrics-for-linux-disk-i-o-utilization-4db53dfedcfc > > The average latency for disk reads would be: > rate(node_disk_read_time_seconds_total[20s]) / > rate(node_disk_reads_completed_total[20s]) > > On Thursday 28 December 2023 at 13:53:51 UTC ضياء سامي wrote: > >> Hi >> >> I am trying to monitor Windows disk latency using windows_exporter. >> I tested disk performance using two commands below : >> C:\> diskspd.exe -c1G -d120 -b4K -o32 -t4 -w10 -L -D -Suw testfile.dat >> PS C:\> Get-Counter -ComputerName win-node -Counter '\LogicalDisk(*)\Avg. >> Disk sec/Read','\LogicalDisk(*)\Avg. Disk sec/Write' -SampleInterval 1 >> >> The output of both commands above shows average latency of 11 msec. >> >> While the prometheus query >> "rate(windows_logical_disk_read_write_latency_seconds_total[20s])" prints >> 125 >> >> Why windows_exporter showing different result ? >> > -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/55ae07e9-e9db-47c5-bfc6-96d65d2fa777n%40googlegroups.com.
