System recovery performance score grading – HP Integrity NonStop J-Series User Manual
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Guardian Performance Analyzer (GPA) User Guide
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(5)
Overbs: An overbusy disk with high queue time or a disk with high
queue time and its backup on a slower processor are considered
overbusy.
(6)
Pcache: A disk with high request queue time and cache hit rate lower
than the low limit of the cache hit rate is a disk with poor cache.
(7)
Queued: A disk that has request queue time greater than the limit is
considered a disk with high queue time.
(8)
R:C <1: The ratio of disk requests to cache requests less than 1.
System Recovery Performance Score Grading
The system recovery score is based on the ability of the system to provide acceptable
performance if a CPU fails. Example 4-39 is a detailed report displaying the System
Recovery Score.
Example 4-39. System Recovery Performance Score Grading
DETAIL System Recovery Performance Score Grading
Negative CPU CPU CPU CPU CPU Total
Factors #00 #01 #02 #03 #04 Score
--------- --- --- --- --- --- -----
1
CPU
2
Memory -10 -10 -10 -10 -10 - 50%
--------- --- --- --- --- --- -----
System Recovery Performance Score : 50%
NEGATIVE CONTRIBUTING FACTORS:
Memory - Memory Shortage
CPU - CPU Cycle Shortage
Notes on System Recovery Performance Score: Good = 90% thru 100%
Fair = 71% thru 89%
Poor = 1% thru 70%
The negative factors that contribute to lower the system recovery performance score are
the following:
(1)
CPU: A processor that can create a CPU cycle shortage to the system;
when the CPU fails, it adds a negative score to the total score.
(2)
Memory: A processor that can introduce a memory shortage to the system;
when the CPU fails, it adds a negative score to the total score.