VMware 4817V62 Administration Guide - Page 339

Appendix C Performance Metrics Table C-5. Memory Data Counters (Continued) Counter overhead Label Memory Overhead reservedCapacity Memory Reserved Capacity shared Memory Shared sharedcommon Memory Shared Common Description Amount of additional machine memory allocated to a virtual machine for overhead. The overhead amount is beyond the reserved amount. VM Amount of machine memory used by the VMkernel to run the virtual machine. Host Total of all overhead metrics for poweredon virtual machines, plus the overhead of running vSphere services on the host. n Stats Type: absolute n Unit: kiloBytes n Rollup Type: average (min/max) n Collection Level: 1(4) Total amount of memory reservation used by powered on VMs and vSphere services on the host. Includes overhead amount. n Stats Type: absolute n Unit: megaBytes n Rollup Type: average n Collection Level: 2 VM Host Amount of guest physical memory that is shared with other virtual machines (through the VMkernel's transparent pagesharing mechanism, a RAM de-duplication technique). The value of shared includes the size of the zero memory area. Sum of the shared memory values of all powered-on virtual machines, plus the amount for the vSphere services on the host. The host's Memory Shared may be larger than the amount of machine memory if memory is overcommitted (the aggregate virtual machine configured memory is much greater than machine memory). The value of this statistic reflects how effective transparent page sharing and memory overcommitment are for saving machine memory. n Stats Type: absolute n Unit: kiloBytes n Rollup Type: average (min/max) n Collection Level: 2(4) Amount of machine memory that is shared by all powered-on virtual machines and vSphere services on the host. Memory Shared - Memory Shared Common = Host memory saved by sharing n Stats Type: absolute n Unit: kiloBytes n Rollup Type: average (min/max) n Collection Level: 2(4) Entity VHR C •ο ο ο ο•ο ο VMware, Inc. 339