Thanks for quick response. Few clarifications:-
1) Is below calculation is right to get equivalent of "system.io.await" ?
(rate( node_disk_read_time_seconds_total [5m]) + 
rate(node_disk_read_time_seconds_total[5m]))/(rate(node_disk_reads_completed_total[5m])
 
+ rate(node_disk_writes_completed_total[5m])) > <Some integer value>

2) If prometheus server has to perform this calculation let say every 5 
minutes, will this cause CPU load if there are many such alerts for 
different environments firing at the same time? Is there any better 
alternative to this?



On Monday, September 14, 2020 at 10:24:56 PM UTC-7 wp...@pobox.com wrote:

> You can calculate it from the basic IO metrics Prometheus provided.
>
> Regards.
>
>
> rsch...@gmail.com wrote:
>
> In datadog I used metrics "system.io.await" to create alert on my linux 
> instances. What is the equivalent metrics in prometheus? 
>
>

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