HP Process Resource Manager (PRM) manual Displaying number of cores to determine number of shares

decreases if prm2d is running, because PRM reserves 11% of the remaining memory to ensure the processes in PRM_SYS have immediate access to needed memory.

This command is useful in determining memory shares. For example, if a PRM group receives 50 of the 100 memory shares assigned, the number of shares equates to 106 Mbytes on this system. If that is too much or too little memory, the number of shares can be adjusted accordingly.

Displaying number of cores to determine number of shares

The prmavail command displays the number of cores when the CPU argument is specified:

#prmavail CPU 16 Cores

This command is useful in determining how much CPU resources a number of shares equates to on a multiprocessor system. For example, 25 CPU shares out of a total of 100 shares assigned on a 16-core system is roughly equivalent to 4 cores.

Displaying past process information

The acctcom command with the -Poption prints the PRM group name in addition to the customary acctcom information for all groups on the system. Adding the -Roption and a PRM group name displays information for that group. The following command displays history information about all PRM groups:

#acctcom -P

COMMAND			START	END	REAL	CPU
NAME	USER	TTYNAME	TIME	TIME	(SECS)	(SECS)	PRMID
ls	root	ttyp1	17:32:08	17:32:08	0.02	0.01	OTHERS
rm	root	ttyp1	17:32:25	17:32:25	0.25	0.02	OTHERS
registra	root	?	17:33:04	17:33:04	0.04	0.04	PRM_SYS
vi	dev1	ttyp2	17:33:07	17:33:35	28.20	0.05	develop
cpp.ansi	dev1	ttyp2	17:33:49	17:33:49	0.04	0.01	develop
ccom	dev1	ttyp2	17:33:49	17:33:49	0.16	0.13	develop
ld	dev1	ttyp2	17:33:49	17:33:49	0.15	0.12	develop
cc	dev1	ttyp2	17:33:49	17:33:49	0.41	0.02	develop
vi	dev1	ttyp2	17:34:00	17:34:52	52.57	2.76	develop
hostname	root	ttyp1	17:35:56	17:35:56	0.01	0.01	OTHERS
ls	root	ttyp1	17:36:11	17:36:11	0.03	0.03	OTHERS
more	root	ttyp1	17:36:12	17:36:19	7.00	0.05	OTHERS

The prmanalyze utility is also useful for examining past process data. For syntax information, see “prmanalyze” on (page 102) . For usage examples, see “Using prmanalyze to quickly identify resource use” on (page 42) and “Using prmanalyze to analyze your configuration” on (page 83) .

Displaying current process information

Using the ps command with the -Poption adds a column listing each process’s PRM group by name.

#ps -P

PRMID	PID	TTY	TIME COMMAND
PRM_SYS	1047	ttyp2	0:01 sh
PRM_SYS	1046	ttyp2	0:02 rlogind
PRM_SYS	1081	ttyp2	0:00	ps
OTHERS	548	?	0:20	sendmail

By using ps with the -land -Poptions, the PRMID is printed instead of the PRM group name.

#ps -l -P

F S UID PRMID				PID PPID		C PRI NI	ADDR	SZ	WCHAN	TTY	TIME COMD
1	S	0	1	3300	3299	0 158 20	65c180	78	418480	ttyp2	0:00	sh
1	R	0	0	3299	492	0 154 20	6a1d80	18		ttyp2	0:00	rlogind

96 Administering PRM