HP Process Resource Manager (PRM) manual Initial configuration based on prmanalyze’s CPU report

Table 10 Initial configuration based on prmanalyze’s CPU report

Application	PRM group	CPU shares
mrkt_rsch	Research	35
financials	Finance	20
web_browser	Web	5
sales_fcst	Sales	15
All other applications	OTHERS	25

3.Generate group/CPU records and application records to implement the configuration decided upon in Step 2.

4.Use prmanalyze to create a summary CPU report, sorted by user and piped to a reverse sort on the “% total” column to determine if there are any critical users on the system that may require their own PRM groups:

#prmanalyze -s uid -r cpu -x root -p -t summary -1filename sort -r +5

The -x root combination prevents prmanalyze from showing data for root processes, which typically are placed in the PRM_SYS group (PRMID 0).

The output is omitted for brevity. However, assume the output shows that most of the sales forecast data is entered by one or two users, consuming approximately 3% of the CPU resources. For these users, create user records with sales_fcst as the initial PRM group. Then increase the CPU shares for sales_fcst from 15 to 18.

Instead of adding a user record for each of these users, you could create only one user record. This record would be for a new netgroup you define, say finance_dept. The netgroup would include these users. Using a netgroup also simplifies updates when the staff changes. For more information on using netgroups in user records, see “Specifying PRM users ” (page 71).

5.Use prmanalyze to create a summary memory report, sorted by command:

#prmanalyze -s command -r mem -p -t summary -1filename

summary memory report by command name : 2231 records processed

unique id	processes	ave KB	peak KB	KB minutes	% total
mrkt_rsch	804	270.83	3132517.22	4273171.32	1.17
financials	759	4356.04	389279.46	107851933.76	29.53
f90com32	843	11921.09	16621.58	5003627.94	1.37
web_browser	98	8832.73	1076302.48	4930582.36	1.35
emacs	12	7.13	5009.34	3980988.79	1.09
vi	1743	7.00	7123.54	3688806.00	1.01
sales_fcst	779	349.81	1933.62	62490565.66	17.11

Based on this report, we can assign memory shares of 30 and 2 to the Finance and Web PRM groups respectively. The peak usage is also worth noticing. The web_browser application has a peak of approximately one Gbyte. This should be capped at 25% to prevent it from consuming too much memory. Also, the research program peaks at three Gbytes, causing poor response time for everyone. With a total of 4 Gbytes on the system, its group needs to be limited. The Research PRM group is consequently capped at 50%. Table 11 shows the configuration updated for memory management.

Table 11 Initial configuration based on prmanalyze’s memory report

Application	PRM group	CPU shares	Memory shares	Memory cap
mrkt_rsch	Research	35	10	50%
financials	Finance	20	30

Using prmanalyze to quickly identify resource use 43