IBM s/390 manual Cpu0 Cpu1 Cpu2

Page 84

The parameter essize specifies expanded storage size and expresses megabytes of storage. Furthermore, the number specified must be an even multiple of 16. If essize is not specified, then no expanded storage is emulated. A specification of 64 means 64 MB of expanded storage.

The instset parameter should always be specified as instset(esa) for the OS/390 systems we are discussing.

The cachesize parameter specifies the amount of storage to be used by FLEX-ES to cache dynamically compiled S/390 instructions. This parameter expresses kilobytes of S/390 storage. (The server storage required is 11 times the specified S/390 storage value.) Practical values are in the range 1024 to 8192. For a Thinkpad/EFS system, 2048 appears to be a practical value. We suggest you do not use values outside the recommended range unless you are clearly in an experimental mood. A specification of 2048 means 22 MB of ThinkPad storage will be used by FLEX-ES for a S/390 instruction cache.

The tracesize parameter specifies the number of entries in a FLEX-ES trace table. We suggest 512 as a reasonable number for a Thinkpad/EFS system. The FLEX-ES instruction trace function runs only when started. There is no processor overhead caused by defining a tracesize parameter. This is a somewhat imprecise parameter because the size of each entry in the trace table is not well defined. In any event, the total memory used (with the recommended value) is fairly trivial.

There is also a processor event trace that uses a permanently defined buffer. This event trace is always active and is not associated with the tracesize parameter.

The cpu parameters indicate the number of emulated S/390 CPUs and assign identification numbers to each one. Multiple cpu parameters are used to specify multiple emulated S/390 CPUs within a single emulated S/390. For example,

cpu(0)

cpu(1)

cpu(2)

as part of a system definition would specify an emulated S/390 with three CPUs. The CPU numbers (which are defined S/390 architecture elements) are 0, 1, and 2. The number of CPUs specified may not exceed the number of server processors enabled for S/390 emulation. For a ThinkPad/EFS system, this will be a single Pentium processor. Therefore, only one cpu parameter may be specified. (The single CPU may be given any number in the range 0 - 7, but there is no reason to use anything other than 0.) The dedicated keyword on a CPU definition statement means that the underlying ThinkPad processor will be used only for S/390 emulation; it will not be used for Linux work. This option cannot be used with a ThinkPad/EFS system because only one processor is available for both S/390 and other Linux work. Netfinity/EFS systems will normally have at least two Server processors and all but one will be dedicated to S/390 emulation (unless you are running multiple S/390 instances; in that case, the situation is more complex).

The channel parameters specify emulated channels and assign channel numbers. For example:

channel(3) local channel(1) local

74S/390 PID: ThinkPad Enabled for S/390

Page 83 Page 85
Image 84
Page 83 Page 85
Contents ThinkPad Enabled for S/390 Bill OgdenPage International Technical Support Organization First Edition October Contents Shutting down Index Vi S/390 PID ThinkPad Enabled for S/390 Special notice AuthorIBM trademarks Comments welcomeIntroduction Purpose of this redbook ThinkPad/EFS systemsFLEX-ES Linux Positioning with other small S/390sThinkPad/EFS hardware used Terminology System and Linux installation Disk planningDifferences Linux installation ThinkPadPartition Manually Partition Mount Point Device Requested Actual Type PurposeDevice Partition Type Default Boot 12.17.210255.255.255.0 12.17.150Gnome Installation notes Monitor Setup IBM 9513 T55A TFT No clock chip 24 bitSelect Start X automatically # df -hEtc/xinetd.d # vi telnet # ps -ef grep xinetd# kill -s USR1 pidnumber PID number for xinetd 14 S/390 PID ThinkPad Enabled for S/390 FLEX-ES and OS/390 installation FLEX-ES Brief introductionPC Processor in ThinkPad Page Installation Installing the FLEX-ES license key OS/390 AD systems Next stepsAD systems # mkdir /s3912 OS/390 on CD-ROM Basic CD-ROM formats3 OS/390 device configuration FLEX-ES formatsInstallation tasks Unzipping and installing Awsckd CD-ROM filesAn unzip program Mount /dev/cdrom /mnt/cdromMinor problems File ownershipVolume in two separate zip files Files unzip in wrong orderFLEX-ES Operation FLEX-ES system and resource definitions CommentsBuilding a shell script $ cd /usr/flexes/rundir# resadm -s R10A.rescf $ resadm -r$ sh shos Flexes ipl a80 0a82cs IPL OS/390 Terminal Solicitor=stor Operation and use User terminal connection11.42.47 A80,8Linux TN3270 Iodf requirementsSystem performance monitors Rmf5 TCP/IP for OS/390 Shutting down # resadm -T# resadm -k # exit36 S/390 PID ThinkPad Enabled for S/390 Additional Topics Basic debugging Operating Systems Messages console SecurityServer memory Vmstat command Importance of Linux swapping CPUUsing a second Linux hard disk Ultrabay# cat /proc/partitions Second disk planning Disk layout AD system Partition Mount Size UseDevice Volser Addr Use FLEX-ES FakeTape on OS/390 Alternative method560 222222Multi-system setup X3270 client $ x3270 -model 3 -keymap pc -port tn3270 localhost$ x3270 -model 3 -keymap pc -port tn3270 localhostt91f Function Keys Used# cd /usr/lib/X11/app-defaults # cp X3270 X3270old Remote resources# vi Disk caches System BWrites Cache Hits Tuning cachesize FSI Channel AdaptersBackup and restore considerations Scsi adapter for the ThinkPadDisk fragmentation Using tar to back up S/390 volumes $ tar -cvzf /holding/OS39RA.tarz /s390/OS39RAUsing tar and ftp $ cd /usr/flexes/rundir $ sh buOS39RAc16 S/390 identification CD-RW driveDisplay PSW and registers RAS discussionVerify ckd disk Linux windowsInstalling FLEX-ES upgrades ThinkPad power controlUseful Linux commands Common commandsMultiple consoles, sessions, screens Text editors62 S/390 PID ThinkPad Enabled for S/390 Frequently asked questions 64 S/390 PID ThinkPad Enabled for S/390 Frequently asked questions 66 S/390 PID ThinkPad Enabled for S/390 Frequently asked questions 68 S/390 PID ThinkPad Enabled for S/390 Appendix A. FLEX-ES definition listings Basic definitions for a single HDDShell script for a single HDD Definitions for two HDDs Shell script for two HDDs Appendix B. FLEX-ES parameters System definitionsCpu0 Cpu1 Cpu2 Resource definitions Emulated control unit typesEmulated device types Typical resource definitionsCKD disk resources Terminal resources Tape resources LAN resourcesCloned devices Resadm command Common rulesCLI commands Flexes mount A90 S390/WORK01 710 Altcons560 Home/tape3 84 S/390 PID ThinkPad Enabled for S/390 Special notices 86 S/390 PID ThinkPad Enabled for S/390 How to get IBM Redbooks IBM RedbooksReferenced Web sites Other resourcesIBM Redbooks collections Index Pipe Port Power control Terminal logo Terminal Solicitor 16, 18, 31, 39, 65 92 S/390 PID ThinkPad Enabled for S/390 Partners in Development ThinkPad Enabled for S/390 Page Page ThinkPad Enabled for S/390 System setup AD CD-ROM use System operation
Top Page Image Contents