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# vCenter Server Resource Counters

Performance counters are modeled using the PerfCounterInfo data object type. Each instance of a PerfCounterInfo data object contains metadata about a specific metric available from the system. The vCenter Server Resources group (vcResources) of performance counters tracks performance metrics for vCenter Server resources.

Counter | StatsType | Unit | Level | Per Device Level | RollupType | Label
--- | --- | --- | --- | --- | --- | ---
buffersz | absolute | kiloBytes | 4 | 4 | average |
cachesz | absolute | kiloBytes | 4 | 4 | average |
ctxswitchesrate | rate | number | 1 | 1 | average | Context switch rate
Number of context switches per second on the system where vCenter Server is running
diskreadsectorrate | rate | number | 4 | 4 | average |
diskreadsrate | rate | number | 1 | 1 | average | Disk read rate
Number of disk reads per second on the system where vCenter Server is running
diskwritesectorrate | rate | number | 4 | 4 | average |
diskwritesrate | rate | number | 1 | 1 | average | Disk write rate
Number of disk writes per second on the system where vCenter Server is running
packetrecvrate | rate | number | 1 | 1 | average | Received packet rate
Rate of the number of total packets received per second on the system where vCenter Server is running
packetsentrate | rate | number | 1 | 1 | average | Sent packet rate
Number of total packets sent per second on the system where vCenter Server is running
pagefaultrate | rate | number | 1 | 1 | average | Page fault rate
Number of page faults per second on the system where vCenter Server is running
physicalmemusage | absolute | kiloBytes | 1 | 1 | average | Physical memory
Physical memory used by vCenter
priviledgedcpuusage | rate | percent | 1 | 1 | average | CPU privileged
CPU used by vCenter Server in privileged mode
syscallsrate | rate | number | 1 | 1 | average | System call rate
Number of systems calls made per second on the system where vCenter Server is running
systemcpuusage | rate | percent | 1 | 1 | average | CPU system
Total system CPU used on the system where vCenter Server in running
usercpuusage | rate | percent | 1 | 1 | average | CPU user
CPU used by vCenter Server in user mode
virtualmemusage | absolute | kiloBytes | 1 | 1 | average | Virtual memory
Virtual memory used by vCenter Server

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