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General Description
IDLE utility significantly reduces the CHARON-AXP host CPU usage whenever a OpenVMS system is running on CHARON-AXP is idle.
The utility stalls the emulated CPU when it detects an OpenVMS idle condition. While IDLE utility is running the emulated CPU consumes, on average, less host system CPU time.
It is not recommended to use the IDLE utility in real-time process control environmentsThe "CHARON Guest Utilities for OpenVMS" package contains several utilities for managing virtual tapes, changing the emulator speed and creating useful definitions for that operations.
This set of utilities is located in the "idle_vms_pkgcharoncp011.vdisk" disk file in the "C:\Program Files\CHARON\Virtual Disk Images\idle_vms_pkg_v3.0Tape utilities package".
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
SRI-AXPVMS-IDLE-V0102–1.PCSI
VMS62TO71U2_PCSI-V0200.PCSI-DCX_AXPEXE
VMS62TO71U2_PCSI-V0200.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_AXPEXE
Install the patch:
$ PRODUCT INSTALL VMS62TO71U2_PCSI /SOURCE=SYS$DISK:[000000.TEMP]
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If 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>
Once IDLE utility is installed it starts to take effect immediately, reducing the host system CPU usage if OpenVMS system running on CHARON-AXP is idle. No reboot is required.
The utility is loaded automatically on reboot, no additional configuration or startup sequence is needed.
Deinstallation
Issue the following command to deinstall IDLE utility:
$ PRODUCT REMOVE IDLE |
The will utility stop working on next system reboot.
Please also refer to the supplied documents "README.TXT" and "VMS62TO71U2_PCSI-V0200.TXT" for more detailsIssue the following commands to install the package:
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Select all the components included to the package:
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Proceed with installation using all the default options.
Once the installation is completed, update "SYSTARTUP_VMS.COM" file with the following line:
$ @SYS$STARTUP:CHARONCP_STARTUP |
After that the package will b loaded automatically on startup.