Hitachi Compute Blade 2000 User Manual page 1066

The relation between Service Ratio and allocation rate is shown in the following
examples:
Example 1
This example shows the allocation rates of LPAR1 (Service Ratio=100, the number
of the logical processors=2) and LPAR2 (Service Ratio=100, the number of the
logical processors=2) when the number of the physical processor can be used by
the shared mode LPARs is 3.
Service
Ratio
LPAR1
(# of logical processors=2)
LPAR2
(# of logical processors=2)
Total
*1:Total available time period in an entire system in a unit time (1 sec)
= 3,000 milliseconds
("1 sec = 1000 milliseconds" X "Number of physical processors = 3" = 3000
milliseconds)
Example 2
This example shows the allocation rates of LPAR1 (Service Ratio=100, the number
of the logical processors=2), LPAR2 (Service Ratio=100, the number of the logical
processors=2) and LPAR3 (Service Ratio=100, the number of the logical
processors=3), when the number of the physical processor can be used by the
shared mode LPARs is 3, and LPAR3 is added while LPAR1 and LPAR2 are
running.
Service
Ratio
LPAR1 (# of logical 100
processors=2)
LPAR2 (# of logical 100
processors=2)
Total 200
LPAR1 100
(# of logical processors=2)
LPAR2 100
(# of logical processors=2)
LPAR2 100
(# of logical processors=3)
Total 300
Actual Actual allocation of the time
period of physical processor
resource
allocation (millisecond) per unit time
rate (1 sec)
100 50%
100 50%
200 100%
Actual Actual allocation of the time
resource period of physical processor
allocation (millisecond) per unit time
rate (1 sec)
50%
50%
100%
Add LPAR
33.33...%
33.33...%
33.33...%
100%
1015
1,500
1,500
3,000 (*1)
1,500
1,500
3,000
1,000
1,000
1,000
3,000