Using the attached WMIExplore.pl, enumerating the Win32_PerfRawData_Tcpip_NetworkInterface class on most of my servers gives information similar to the following:
D:\CVS\secure\scripts\SystemsMonitoring>WMIExplore.pl
Win32_PerfRawData_Tcpip_NetworkInterface l3pinfra1
Collecting WMI data from l3pinfra1 for
Win32_PerfRawData_Tcpip_NetworkInterface
===========================================
BytesReceivedPersec -> 791744567 -> PERF_COUNTER_COUNTER
BytesSentPersec -> 1209514631 -> PERF_COUNTER_COUNTER
BytesTotalPersec -> 2001259198 -> PERF_COUNTER_BULK_COUNT
Caption -> ->
CurrentBandwidth -> 100000000 -> PERF_COUNTER_RAWCOUNT
Description -> ->
Frequency_Object -> 0 ->
Frequency_PerfTime -> 3391790000 ->
Frequency_Sys100NS -> 10000000 ->
Name -> Intel[R] PRO_1000 MT Network Connection _2 ->
<snip>
We have a farm of servers with 4 GB NICs teamed, so that the live
interface has a bandwidth of 4 GB/s. Running the same code on one of
these machines shows this:
D:\CVS\secure\scripts\SystemsMonitoring>WMIExplore.pl
Win32_PerfRawData_Tcpip_NetworkInterface l3pcalcamd2
Collecting WMI data from l3pcalcamd2 for
Win32_PerfRawData_Tcpip_NetworkInterface
===========================================
BytesReceivedPersec -> 1850144995 -> PERF_COUNTER_COUNTER
BytesSentPersec -> -876640650 -> PERF_COUNTER_COUNTER
BytesTotalPersec -> 973504345 -> PERF_COUNTER_BULK_COUNT
Caption -> ->
CurrentBandwidth -> -294967296 -> PERF_COUNTER_RAWCOUNT
Description -> ->
Frequency_Object -> 0 ->
Frequency_PerfTime -> 2606000000 ->
Frequency_Sys100NS -> 10000000 ->
Name -> HP Network Team _1 ->
<snip>
The CurrentBandwidth property is a negative value, almost as if it is a
counter that has wrapped. Does anybody know how I can process this to
get the true value?
Cheers,
Paul
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WMIExplore.pl
Description: WMIExplore.pl
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