HP-UX Compressed Dump A.01.01 Release Notes Edition 2 HP-UX 11i Manufacturing Part Number: 5991-2881 E0905 U.S.A. © Copyright 2003-2005 © Hewlett-Packard Company, All rights reserved.
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1 HP-UX Compressed Dump A.01.01 Release Note The information in this document applies to the release of HP Compressed Dump software product HP-UX CDUMP11i A.01.01.
HP-UX Compressed Dump A.01.01 Release Note Announcement Announcement The HP-UX Compressed Dump, version A.01.01 software speeds up the memory dump for HP-UX in the event of a system crash. With this product, the dumps are taken faster and thus the system availability is improved. This speedup is achieved by compressing small chunks of memory and writing only the compressed data to disk. The compression and disk write are done in parallel.
HP-UX Compressed Dump A.01.01 Release Note What Is in This Version What Is in This Version This section lists and describes the features that HP-UX Compressed Dump A.01.01 supports. HP-UX Compressed Dump A.01.01 offers the following features: • Increased dump speed by at least a factor of 3 for selective dumps excluding UNUSED pages. NOTE On a machine that took X hrs. of time to dump, with the option of compressed dump, the dump time should reduce to X/3 hrs.
HP-UX Compressed Dump A.01.01 Release Note What Is in This Version Dump compressed: ON DEVICE OFFSET(kB) --------------------31:0x03a000 310112 SIZE (kB) ---------4194304 ---------4194304 LOGICAL VOL. -----------64:0x000002 NAME ----------------/dev/vg00/lvol2 Turning compression option ON using crashconf, gives a hint to the system to use compression while dumping. The system may choose to take uncompressed dump based on the environment of the crash.
HP-UX Compressed Dump A.01.01 Release Note What Is in This Version #define #define #define #define PS_EARLY_DUMP0x1 /* An early dump was taken */ PS_CONF_CHANGED 0x2 /* Config. changed since boot */ PS_HEADER_VALID 0x4 /* headerdev and headeroffset valid */ PS_COMPRESS0x8 /* Compress dump state */ The compression option is just a hint to the kernel to use the Compressed Dump feature.
HP-UX Compressed Dump A.01.01 Release Note Known Problems and Workarounds Known Problems and Workarounds This section lists known problems and workarounds in this release of HP-UX Compressed Dump product. For the most current information go to the IT Resource web site at the following URL: http://itrc.hp.
HP-UX Compressed Dump A.01.01 Release Note System Requirements and Installation Instructions System Requirements and Installation Instructions This section provides information about installation and system requirements. Supported Hardware and Software HP-UX Compressed Dump A.01.01 product has the following requirements: • Hardware: 64-bit PA-RISC HP-UX servers • Operating system: HP-UX 11i, version 1.0 • Disk space: ~2.0 MB • Memory: ~3.0 MB Installing from Software Pack CDROM 1. Log in as root.
HP-UX Compressed Dump A.01.01 Release Note System Requirements and Installation Instructions • Enhanced crashconf, crashutil, savecrash and libcrash Installing from Software Depot 1. Go to the following web site: http://software.hp.com 2. Select Enhancement Releases. 3. Select HP-UX Software Pack. 4. Locate and select the Compressed Dump link. 5. Select Installation at the bottom of the page, and follow the instructions to install Compressed Dump.
