Re: [prometheus-users] Prometheus disk I/O metrics
Corrected the above expression by fixing node_disk_write_read_seconds_total to node_disk_write_time_seconds_total:- (rate( node_disk_read_time_seconds_total [5m]) + rate(node_disk_write_time_seconds_total[5m]))/(rate(node_disk_reads_completed_total[5m]) + rate(node_disk_writes_completed_total[5m])) > On Tuesday, September 15, 2020 at 11:31:43 AM UTC-7 rsch...@gmail.com wrote: > 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])) > > > 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? >> >> -- 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 prometheus-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/1f8732de-c212-4029-903e-a8c23fd4835en%40googlegroups.com.
Re: [prometheus-users] Prometheus disk I/O metrics
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])) > 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? > > -- 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 prometheus-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/2269ca61-9c45-4392-a61b-0169d0a0a795n%40googlegroups.com.
Re: [prometheus-users] Prometheus disk I/O metrics
Sorry, I have no idea what metrics Nginx exports or what Lua scripts in Nginx can do. -- 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 prometheus-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/3f6ae14e-dd75-4d77-9779-663e7eaa904do%40googlegroups.com.
Re: [prometheus-users] Prometheus disk I/O metrics
Brian, Do you know if we can implement a Lua exporter within nginx who take application's APM and report to prometheus? Thank you. Brian Candler wrote: Just to add, the data collected by node_exporter maps closely to the raw stats exposed by the kernel, so the kernel documentation is helpful: -- 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 prometheus-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/2e0ca03a-4747-f214-d693-2e54996f01c8%40pobox.com.
Re: [prometheus-users] Prometheus disk I/O metrics
Just to add, the data collected by node_exporter maps closely to the raw stats exposed by the kernel, so the kernel documentation is helpful: https://www.kernel.org/doc/Documentation/iostats.txt https://www.kernel.org/doc/html/latest/admin-guide/iostats.html -- 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 prometheus-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/9a928530-978d-4e1c-9701-acee10c1bcbao%40googlegroups.com.
Re: [prometheus-users] Prometheus disk I/O metrics
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? -- 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 prometheus-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/500d9891-b3cb-9a0e-1424-fc45cd614978%40pobox.com.
[prometheus-users] Prometheus disk I/O metrics
In datadog I used metrics "system.io.await" to create alert on my linux instances. What is the equivalent metrics in prometheus? -- 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 prometheus-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/f0b45fac-7764-4720-a72e-21d626ba2392n%40googlegroups.com.
