Table of Contents
General Description
The "Idle" utility significantly reduces the CHARON-AXP host CPU usage whenever a OpenVMS system is running on CHARON-AXP is idle.
"Idle" utility stalls the emulated CPU when it detects an OpenVMS idle condition. While the "Idle" utility is running the emulated CPU consumes, on average, less host system CPU time.
However it is not recommended to employ "Idle" utility in real-time process control environments.
These utility are located in the "idle_vms_pkg.vdisk" disk file in the "C:\Program Files \CHARON\Virtual Disk Images\idle_vms_pkg_v2.0".
Installation
Specify this image in the CHARON-AXP configuration file, boot from the system disk and mount the disk with the following OpenVMS command:
$ MOUNT <device name> /OVERRIDE=IDENTIFICATION |
In the [.AXP] folder of this disk you will see the following files:
README.TXT |
If the OpenVMS version is less than 7.1 the following steps must be applied:
Copy the "VMS62TO71U2_PCSI-V0200.PCSI-DCX_AXPEXE" file to some directory on any spare disk and run this file from there:
$ COPY VMS62TO71U2_PCSI-V0200.PCSI-DCX_AXPEXE SYS$DISK:[000000.TEMP]
$ SET DEF SYS$DISK:[000000.TEMP]
$ RUN VMS62TO71U2_PCSI-V0200.PCSI-DCX_AXPEXEInstall the patch:
$ PRODUCT INSTALL VMS62TO71U2_PCSI /SOURCE=SYS$DISK:[000000.TEMP]
Id the patch has been installed return to the "[000000.AXP]" directory of the "idle_vms_pkg.vdisk" and proceed with installation of the "Idle" utility itself:
$ PRODUCT INSTALL IDLE /SOURCE=<directory containing the IDLE kit> |
$ RUN <name of the utility>.EXE |
or
$ @<name of the utility>.COM |
The SHUTDOWNn.EXE routines do not initiate the shutdown of the OpenVMS system running on CHARON-AXP, only of the emulator itself.
Establish a VMS shutdown procedure that can complete within the specified time