Patch Name: PHKL_18334 Patch Description: s700 10.20 ncsize tunable patch Creation Date: 99/04/21 Post Date: 99/04/26 Hardware Platforms - OS Releases: s700: 10.20 Products: N/A Filesets: OS-Core.KERN-RUN Automatic Reboot?: No Status: General Superseded Critical: No Path Name: /hp-ux_patches/s700/10.X/PHKL_18334 Symptoms: PHKL_18334: Slow performance on HFS file systems due to DNLC performance scalability issues. Decreasing the size of the DNLC improves performance. Defect Description: PHKL_18334: The size of the DNLC may impact the performance of ufs file systems. A work around tested successfully is to tune the size of the DNLC smaller in order to improve performance. Resolution: Added a kernel tunable, ncsize, which can be set to reduce the size of the DNLC. SR: 4701414698 Patch Files: /usr/conf/master.d/fs-tune /usr/conf/space.h.d/core-hpux.h what(1) Output: /usr/conf/master.d/fs-tune: fs-tune $Date: 99/04/21 06:27:50 $ $Revision: 1.1.98 .3 $ PATCH_10.20 (PHKL_18334) /usr/conf/space.h.d/core-hpux.h: core-hpux.h $Date: 99/04/21 06:32:29 $ $Revision: 1.6.98.16 $ PATCH_10.20 (PHKL_18334) cksum(1) Output: 3994757890 561 /usr/conf/master.d/fs-tune 3886057463 19203 /usr/conf/space.h.d/core-hpux.h Patch Conflicts: None Patch Dependencies: s700: 10.20: PHKL_16750 Hardware Dependencies: None Other Dependencies: None Supersedes: None Equivalent Patches: PHKL_18335: s800: 10.20 PHKL_17390: s700: 11.00 Patch Package Size: 80 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_18334 5a. For a standalone system, run swinstall to install the patch: swinstall -x autoreboot=true -x match_target=true \ -s /tmp/PHKL_18334.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_18334.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_18334. 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_18334.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_18334.depot of=/dev/rmt/0m bs=2k Special Installation Instructions: This patch depends on base patch PHKL_16750 . For successful installation please insure that PHKL_16750 is in the same depot with PHKL_18334, or PHKL_16750 is already installed.