Installation guide

C H A P T E R 1 2 VMware ESX Server Resource Management
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Reading from this file reports the number of disk bandwidth shares allocated to the
virtual machine identified by <id> for the disk identified by vmhba<x:y:z>. It also
reports disk usage statistics.
Writing a number <n> to this file changes the number of disk bandwidth shares
allocated to the virtual machine identified by <id> to <n>. The valid range of values
for <n> is 0 to 100000. Or, you may use the special values low, normal and high.
These values are automatically converted into numbers, through the configuration
options DiskSharesLow, DiskSharesNormal and DiskSharesHigh,
described in this section.
/proc/vmware/config/DiskSchedNumReqOutstanding
This option specifies the number of outstanding commands allowed to a disk when
there are multiple virtual machines competing for bandwidth. The default value is 16;
the valid range of numeric values is from 1 to 256. Note that selecting a number
larger than 16 may affect the ability of ESX Server to provide fair allocation of disk
bandwidth.
/proc/vmware/config/DiskSchedQuantum
This option specifies the number of sequential requests that a virtual machines may
issue to a disk, without being preempted by another virtual machine. The default
value is 8; the valid range of numeric values is from 1 to 64.
/proc/vmware/config/DiskSharesLow
This option specifies the a numerical value for the low shares value. By default, this
number is 500.
/proc/vmware/config/DiskSharesNormal
This option specifies the a numerical value for the normal shares value. By default, this
number is 1000.
/proc/vmware/config/DiskSharesHigh
This option specifies the a numerical value for the high shares value. By default, this
number is 2000.