Patch Name: PHKL_17573

Patch Description: s700 10.20 ki/nfs vasusage, ACE 2 bundle cumulative patch

Creation Date: 99/02/18

Post Date:  99/02/26

Hardware Platforms - OS Releases:
	s700: 10.20

Products: N/A

Filesets:
	OS-Core.CORE-KRN

Automatic Reboot?: Yes

Status: General Release

Critical: No

Path Name: /hp-ux_patches/s700/10.X/PHKL_17573

Symptoms:
	PHKL_17573:
	Slow NFS-V3 and ClearCase MVFS write performance with
	midaemon running.

	PHKL_15185:
	No visible symptoms.  This is a no-change superseding
	patch to satisfy internal HP requirements.

	PHKL_13967:
	This patch is part of the 10.20 ACE 2 bundle which adds
	networking enhancements to 10.20.  New networking features
	supported in ACE 2 include NFS Version 3.0, AutoFS, and
	CacheFS.

	PHKL_8922:
	On hp-ux 9.04 (S800) and 10.x (S700/S800), large MP
	systems with a high switch rate result in unacceptable
	level of KI CPU overhead.  Moreover, the KI has the
	processor spinlock during this time with interrupts
	disabled!  We have observed on a 10.10 TPC benchmark
	system that enabling the swtch trace in the KI
	reduces TPC throughput by 10%.

Defect Description:
	PHKL_17573:
	The performance tools Glance and MeasureWare use the
	midaemon process to access the internal hp-ux KI interface.
	The kernel routine ki_get_devid records the device ID for
	I/Os by calling vop_getattr, which can cause performance
	problems for NFS and MVFS (ClearCase) I/Os.

	For hp-ux 11.0, PHKL_16074 addresses this issue.

	PHKL_15185:
	Remove fileset-level checkinstall script added for
	Networking Enhancements bundle to avoid manufacturing
	conflicts.

	PHKL_13967:
	New functionality to support networking features in 10.20.

	PHKL_8922:
	The KI swtch trace generation code in the kernel walks
	all pregions in the vas of the swtched process.  PTC's MI
	and performance tools do not need rss values updated every
	context switch - the extra overhead is not worth the small
	increase in accuracy.

	It is sufficient to copy the pid's
	vas_t->va.prss+vas_t->va.rss (private + shared) value
	which is updated every 5 seconds by statdaemon.

SR:
	4701339945 4701378117 D500419812

Patch Files:
	/usr/conf/lib/libhp-ux.a(sys_ki.o)

what(1) Output:
	/usr/conf/lib/libhp-ux.a(sys_ki.o):
		sys_ki.c      $Date: 99/02/07 17:13:01 $ $Revision:
			1.21.98.15 $ PATCH_10.20 (PHKL_17573)

cksum(1) Output:
	2602112732 36660 /usr/conf/lib/libhp-ux.a(sys_ki.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes:
	PHKL_8922 PHKL_13967 PHKL_15185

Equivalent Patches:
	PHKL_16074:
	s700: 11.00

Patch Package Size: 100 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_17573

	5a. For a standalone system, run swinstall to install the
	    patch:

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHKL_17573.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_17573.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_17573.  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_17573.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_17573.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None