Patch Name: PHKL_9151 Patch Description: s700 10.20 Performance enhancements for PA8000 processors Creation Date: 96/11/26 Post Date: 96/11/27 Warning: 97/04/08 - This Critical Warning has been issued by HP. This patch introduces a small possibilty for an HPMC to occur in module flip_comb(). The problem has not been observed by any customer. It has only been observed with HP-internal testing on pre-release hardware. The problem will only occur on PA8000 systems. As of this date, the s700 systems based on the PA8000 processor listed in the /usr/lib/sched.models file are: 780, 781, J220, J280, J410, J400, C180, C180-XP, C160, C140, and C130. Since this patch has existed for several months and no customers have reported any problems, it is not suggested to remove the patch from installed systems. Replacement patch PHKL_10554, which is being released today, should be installed at the next available opportunity to avoid any potential problems. Hardware Platforms - OS Releases: s700: 10.20 Products: N/A Filesets: OS-Core.CORE-KRN Automatic Reboot?: Yes Status: General Superseded With Warnings Critical: No Path Name: /hp-ux_patches/s700/10.X/PHKL_9151 Symptoms: PHKL_9151: This patch includes 3 separate performance enhancements. All are targetted for PA-RISC 8000 processors. 1. Kernel-assisted branch prediction. 2. bl->bll branch stub elimination. 3. Re-positioning perf-critical kernel assembly routines. Defect Description: PHKL_9151: The changes are designed to improve locality of reference within the kernel, thus improving the i-cache hit rate. The "flipper" tool will reduce mis-predicted branches. All will improve the processor efficiency, or CPI rate, when executing kernel code. SR: 4701339226 Patch Files: /usr/conf/lib/libhp-ux.a(asm_scall.o) /usr/conf/lib/libhp-ux.a(asm_utl.o) /usr/conf/lib/libhp-ux.a(bcopy.o) /usr/conf/lib/libhp-ux.a(bzero.o) /usr/conf/lib/libhp-ux.a(flipper.o) /usr/conf/lib/libhp-ux.a(init_main.o) /usr/conf/lib/libhp-ux.a(interrupt.o) /usr/conf/lib/libhp-ux.a(lbcopy.o) /usr/conf/lib/libhp-ux.a(lbzero.o) /usr/conf/lib/libhp-ux.a(outlaw.o) /usr/conf/lib/libhp-ux.a(pgcopy.o) /usr/conf/lib/libhp-ux.a(pm_clockint.o) /usr/conf/lib/libhp-ux.a(protection.o) /usr/conf/lib/libhp-ux.a(resume.o) /usr/conf/lib/libhp-ux.a(ulbcopy.o) what(1) Output: /usr/conf/lib/libhp-ux.a(asm_scall.o): asm_scall.s $Date: 96/11/22 10:45:59 $ $Revision: 1 .39.98.6 $ PATCH_10.20 (PHKL_9151) /usr/conf/lib/libhp-ux.a(asm_utl.o): asm_utl.s $Date: 96/11/22 10:49:42 $ $Revision: 1.1 17.98.10 $ PATCH_10.20 (PHKL_9151) /usr/conf/lib/libhp-ux.a(bcopy.o): bcopy.s $Date: 96/11/22 10:51:06 $ $Revision: 1.7.9 8.4 $ PATCH_10.20 (PHKL_9151) /usr/conf/lib/libhp-ux.a(bzero.o): bzero.s $Date: 96/11/22 10:52:32 $ $Revision: 1.9.9 8.4 $ PATCH_10.20 (PHKL_9151) /usr/conf/lib/libhp-ux.a(flipper.o): flipper.c $Date: 96/11/22 11:08:17 $ $Revision: 1.3.98.6 $ PATCH_10.20 (PHKL_9151) /usr/conf/lib/libhp-ux.a(init_main.o): init_main.c $Date: 96/11/22 11:19:05 $ $Revision: 1.120.98.11 $ PATCH_10.20 (PHKL_9151) /usr/conf/lib/libhp-ux.a(interrupt.o): interrupt.s $Date: 96/11/22 10:54:52 $ $Revision: 1 .12.98.9 $ PATCH_10.20 (PHKL_9151) /usr/conf/lib/libhp-ux.a(lbcopy.o): lbcopy.s $Date: 96/11/22 10:56:03 $ $Revision: 1.7. 98.5 $ PATCH_10.20 (PHKL_9151) /usr/conf/lib/libhp-ux.a(lbzero.o): lbzero.s $Date: 96/11/22 10:57:29 $ $Revision: 1.9. 98.4 $ PATCH_10.20 (PHKL_9151) /usr/conf/lib/libhp-ux.a(outlaw.o): outlaw.c $Date: 96/11/22 11:17:11 $ $Revision: 1.2.98.3 $ PATCH_10.20 (PHKL_9151) /usr/conf/lib/libhp-ux.a(pgcopy.o): pgcopy.s $Date: 96/11/22 18:05:02 $ $Revision: 1.7. 98.5 $ PATCH_10.20 (PHKL_9151) /usr/conf/lib/libhp-ux.a(pm_clockint.o): pm_clockint.c $Date: 96/11/22 11:20:15 $ $Revision: 1.7.98.6 $ PATCH_10.20 (PHKL_9151) /usr/conf/lib/libhp-ux.a(protection.o): protection.s $Date: 96/11/22 11:00:38 $ $Revision: 1.10.98.4 $ PATCH_10.20 (PHKL_9151) /usr/conf/lib/libhp-ux.a(resume.o): resume.s $Date: 96/11/22 11:01:44 $ $Revision: 1.11 .98.4 $ PATCH_10.20 (PHKL_9151) /usr/conf/lib/libhp-ux.a(ulbcopy.o): ulbcopy.s $Date: 96/11/22 11:02:45 $ $Revision: 1.4 .98.7 $ PATCH_10.20 (PHKL_9151) cksum(1) Output: 3109290296 7640 /usr/conf/lib/libhp-ux.a(asm_scall.o) 1231112847 18512 /usr/conf/lib/libhp-ux.a(asm_utl.o) 3455675956 4668 /usr/conf/lib/libhp-ux.a(bcopy.o) 4124458617 2432 /usr/conf/lib/libhp-ux.a(bzero.o) 824807657 7948 /usr/conf/lib/libhp-ux.a(flipper.o) 508619436 18224 /usr/conf/lib/libhp-ux.a(init_main.o) 2717717441 6568 /usr/conf/lib/libhp-ux.a(interrupt.o) 140326103 6136 /usr/conf/lib/libhp-ux.a(lbcopy.o) 300166288 2428 /usr/conf/lib/libhp-ux.a(lbzero.o) 2457463992 3348 /usr/conf/lib/libhp-ux.a(outlaw.o) 3029803182 2988 /usr/conf/lib/libhp-ux.a(pgcopy.o) 1049043668 6184 /usr/conf/lib/libhp-ux.a(pm_clockint.o) 18384036 11264 /usr/conf/lib/libhp-ux.a(protection.o) 2317800830 3876 /usr/conf/lib/libhp-ux.a(resume.o) 348001041 6332 /usr/conf/lib/libhp-ux.a(ulbcopy.o) Patch Conflicts: None Patch Dependencies: None Hardware Dependencies: None Other Dependencies: None Supersedes: None Equivalent Patches: None Patch Package Size: 170 Kbytes Installation Instructions: Please review all instructions and the Hewlett-Packard SupportLine User Guide or your Hewlett-Packard support terms and conditions for precautions, scope of license, restrictions, and, limitation of liability and warranties, before installing this patch. ------------------------------------------------------------ 1. Back up your system before installing a patch. 2. Login as root. 3. Copy the patch to the /tmp directory. 4. Move to the /tmp directory and unshar the patch: cd /tmp sh PHKL_9151 5a. For a standalone system, run swinstall to install the patch: swinstall -x autoreboot=true -x match_target=true \ -s /tmp/PHKL_9151.depot 5b. For a homogeneous NFS Diskless cluster run swcluster on the server to install the patch on the server and the clients: swcluster -i -b This will invoke swcluster in the interactive mode and force all clients to be shut down. WARNING: All cluster clients must be shut down prior to the patch installation. Installing the patch while the clients are booted is unsupported and can lead to serious problems. The swcluster command will invoke an swinstall session in which you must specify: alternate root path - default is /export/shared_root/OS_700 source depot path - /tmp/PHKL_9151.depot To complete the installation, select the patch by choosing "Actions -> Match What Target Has" and then "Actions -> Install" from the Menubar. 5c. For a heterogeneous NFS Diskless cluster: - run swinstall on the server as in step 5a to install the patch on the cluster server. - run swcluster on the server as in step 5b to install the patch on the cluster clients. By default swinstall will archive the original software in /var/adm/sw/patch/PHKL_9151. If you do not wish to retain a copy of the original software, you can create an empty file named /var/adm/sw/patch/PATCH_NOSAVE. Warning: If this file exists when a patch is installed, the patch cannot be deinstalled. Please be careful when using this feature. It is recommended that you move the PHKL_9151.text file to /var/adm/sw/patch for future reference. To put this patch on a magnetic tape and install from the tape drive, use the command: dd if=/tmp/PHKL_9151.depot of=/dev/rmt/0m bs=2k Special Installation Instructions: Due to the number of objects in this patch, the customization phase of the update may take more than 10 minutes. During that time the system will not appear to make forward progress, but it will actually be installing the objects.