There is a problem with counters from munin-node.exe.

[marcinwis]

There is a problem with counters from munin-node.exe.
Problem as I find out is for now with counters:

Object | Counter

Process | IO Read Operations/sec
Process | IO Write Operations/sec
Process | IO Data Operations/sec
Process | IO Other Operations/sec

The count value read using powershell / cmd is ok.
For example:

Powershell -> Get-Counter -Counter "\Process(*)\IO Other Operations/sec" -MaxSamples 1

CMD -> typeperf.exe -c "\Process(*)\IO Other Operations/sec" -sc 1

After few restart munin-node (run as services or started manually) for an indefinite time, the correct value is returned.

└──╼ $ telnet 4949
Trying ...
Connected to < Host name>.>.
Escape character is '^]'.

munin node at < Host name>.>

fetch IOReadOpSec
IOReadOpSec.value 0.00
IOReadOpSec_1_.value 0.00
IOReadOpSec_2_.value 0.00
IOReadOpSec_3_.value 0.00
IOReadOpSec_4_.value 0.00
IOReadOpSec_5_.value 0.00
IOReadOpSec_6_.value 0.00
IOReadOpSec_7_.value 0.00
IOReadOpSec_8_.value 0.00
IOReadOpSec_9_.value 0.00
IOReadOpSec_10_.value 0.00
IOReadOpSec_11_.value 0.00
IOReadOpSec_12_.value 0.00
IOReadOpSec_13_.value 0.00
IOReadOpSec_14_.value 0.00
IOReadOpSec_15_.value 0.00
IOReadOpSec_16_.value 0.00
IOReadOpSec_17_.value 0.00
IOReadOpSec_18_.value 0.00
IOReadOpSec_19_.value 0.00
IOReadOpSec_20_.value 0.00
IOReadOpSec_21_.value 0.00
IOReadOpSec_22_.value 1.33
IOReadOpSec_23_.value 0.00
IOReadOpSec_24_.value 3.34
IOReadOpSec_25_.value 0.00
IOReadOpSec_26_.value 0.00
IOReadOpSec_27_.value 0.00
IOReadOpSec_28_.value 0.00
IOReadOpSec_29_.value 0.00
IOReadOpSec_30_.value 0.00
IOReadOpSec_31_.value 0.00
IOReadOpSec_32_.value 0.00
IOReadOpSec_33_.value 0.00
IOReadOpSec_34_.value 0.00
IOReadOpSec_35_.value 0.00
IOReadOpSec_36_.value 0.00
IOReadOpSec_37_.value 0.00
.
^]
telnet> q
Connection closed.

In all other situations there is a error.

$ telnet 4949
Trying ...
Connected to .
Escape character is '^]'.

munin node at < Host name>.>

fetch IOReadOpSec

Unknown Error

.
^]
telnet> q
Connection closed.

Problem occure in all servers where we have Windows as a system.

[kefealo]

Same situation here... :(
Any development? Any News?
ps script runs from poowershell but timing out in munin :(

[singularcitrus]

I am not familiar with perf counters but ill take a look at it...

[ironoxid]

Use of munin-node.exe -run gives generally more informations.
Can you provide it's output during your query resulting in "unknown error"?