GPA Manual

Using GPA Information
Guardian Performance Analyzer (GPA) Manual—135081
4-34
System Recovery Performance Score Grading
The negative contributing factors are the following:
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 4-40 is a detailed report displaying the System
Recovery Score.
NEGATIVE CONTRIBUTING FACTORS:
Blockd - Disk Blocked Problem Overbs - Cpu Overbusy Problem
Hiproc - High Proc Rate Pcache - Poor Cache
Indexd - Disk Reqs:Cache > 3.0 Queued - Disk Queue Problem
Memory - Memory Shortage R:C <1 - Disk reqs:Cache < 1.0
Notes on Disk Volume Subsystem Score: Good = 90% thru 100%
Fair = 75% thru 89%
Poor = 2% thru 74%
(1) Blockd: A disk with high request queue time and blocked requests higher than
the limit is one that has a blocked request problem.
(2) Hiproc: A disk with request rate per second higher than the request rate limit
and high queue time is a disk with high request rate.
(3) Indexd: An index problem is detected when a disk has high queue time and
cache call per request greater than the cache call ratio limit.
(4) Memory: This problem is detected when a disk has high queue time and a
shortage of memory.
(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.
Example 4-40. System Recovery Performance Score Grading (page 1 of 2)
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%
Example 4-39. Negative Contributing Factors to Disk Volume Score (page 2 of 2)