On windows, calling disk.DiskIOCounters() causes WMI service to disrupt write activity in elasticsearch about gopsutil

[shirou]

disk.DiskIOCounters() uses

• https://github.com/StackExchange/wmi

and wmi uses

• https://github.com/go-ole/go-ole

From gopsutil, just invoke wmi.Query. I updated latest go-ole in my environment, DiskIOCounter WMI Query returns error. I will dig it deeper, but please wait until this weekend.

[shirou]

When I test now, I can not reproduce that error, with same code, same PC. Perhaps, at the last time the WMI service was something bad, I got the error. But something fixed.

disk.DiskIOCounters() always do something bad with latest go-ole and WMI? If so, could you send me some more detail?

Thank you.

[oldenbur]

I updated the following to the latest versions:

• github.com/StackExchange/wmi
• github.com/go-ole/go-ole
• github.com/shirou/gopsutil

I am still observing the problem on multiple systems. The operating system is 64bit Windows Server 2012 R2 Standard. The machine is a Dell Server PER730XD with 2 wGHz Intel Xeon CPUs and 128GB RAM. I included a grafana screenshot showing the outages in CPU and Memory. These outages go away if I don't make any calls to disk.DiskIOCounters() as I mentioned. We have other ways to get this information, so this is not a serious problem for us, just letting you know. Thanks for your attention and please let me know if I can test anything for you.

[shirou]

Thanks for sharing information. I will try on Windows Server 2012 R2. And, if there is no problem, could you tell me how to get disk IO Counter with another way? I am not cleave to use WMI. If there are better way, I want to change to.

[sparrc]

@shirou, if it helps, in Telegraf we use win perf mon queries to get most system stats, you can see examples and the code here: https://github.com/influxdata/telegraf/tree/master/plugins/inputs/win_perf_counters

[shirou]

@sparrc, thank you for the information. But, it seems using github.com/lxn/win and that use cgo, right?

I know the PdhOpenQuery approach like this. However, I am not familiar with Windows, I could not understand, so I change to use WMI.

But as you suggested, we have to change to use PDH, though.

[Lomanic]

Small update: telegraf doesn't use github.com/lxn/win anymore and this part of the code doesn't rely on cgo.

[Lomanic]

Closed by #850