c# - Write to same performance counter from multiple processes -


i'm using newer system.diagnostics.performancedata set of api's write counters , increment / decrement single counter multiple processes simultaneously.

i've tried tweaking countersetinstancetype in various ways no success:

if use multiple or multipleaggregate see single instance in perfmon, there separate counter each process , overwrite each other. same behavior happens single counterset type.

when try gloablaggregate counterset type performance monitor doesn't seem read values @ all.

answering own question:

as documented here: http://msdn.microsoft.com/en-us/library/windows/desktop/ee781345%28v=vs.90%29.aspx

you need specify how aggregate counters within manifest file (by setting aggregate attribute each counter).

it appear not doing cause counters stay @ 0 / undefined.

in case of globalaggregate works perfectly.

in case of multipleaggregate has impact on _total instance created counterset automatically (as result of defining multipleaggregate). other instances remain @ old behavior.

there seems 'multipleinstanceaggregate' counter type far can tell unsupported manifest schema. (see: http://msdn.microsoft.com/en-us/library/system.diagnostics.performancedata.countersetinstancetype)


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