Patch Name: PHKL_28003

Patch Description: s700_800 11.00 sar shows incorrect values for avwait, avque

Creation Date: 02/11/16

Post Date:  03/01/08

Hardware Platforms - OS Releases:
	s700: 11.00
	s800: 11.00

Products: N/A

Filesets:
	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP
	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP

Automatic Reboot?: Yes

Status: General Release

Critical: No

Category Tags:
	defect_repair general_release

Path Name: /hp-ux_patches/s700_800/11.X/PHKL_28003

Symptoms:
	PHKL_28003:
	( SR:8606254893 CR:JAGae19224 )
	"sar -d" reports incorrect values for avque and avwait.
	Example output:
	device %busy  avque    r+w/s blks/s avwait        avserv
	c17t1d1 66.00 60178.29 284   27206  2124620672.00 0.00
	c25t1d1 67.00 32767.50 296   28525  4.91          2.91
	c33t1d1 69.00 65531.50 294   28413  4.99          2.87
	c41t1d1 67.60 65534.50 316   29669  5.04          2.68
	c49t1d1 67.80 60426.86 310   29845  1295032832.00 0.00

Defect Description:
	PHKL_28003:
	( SR:8606254893 CR:JAGae19224 )
	The filesystem merges the I/O buffers before sending them to
	the disk driver. The kernel routine used to measure and
	gather data for sar did not handle the combined buffers: it
	did not timestamp the individual elements in the merged
	list, nor record their lengths correctly.

	Resolution:
	The buffer enqueue routine is made aware of the merged
	lists. This problem has been fixed by timestamping the
	queue-time field of every buffer in the list in the buffer
	enqueue routine. This field is used in the computation of
	the "avwait" field of sar(1M) command. Also, in case of
	a merged list of buffers, the fields corresponding to
	cumulative queue length and the number of buffers
	enqueued, associated with an I/O device, are updated as
	every buffer element is enqueued. These two fields are
	used in the computation of the "avque" field in the sar(1M)
	command.

Enhancement:
	No

SR:
	8606254893

Patch Files:
	
	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP:
	/usr/conf/lib/libhp-ux.a(kmetric.o)

	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP:
	/usr/conf/lib/libhp-ux.a(kmetric.o)

what(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP:
	/usr/conf/lib/libhp-ux.a(kmetric.o):
		kmetric.c $Date: 2002/11/15 16:03:15 $Revision: r11r
			os/3 PATCH_11.00 (PHKL_28003)

	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP:
	/usr/conf/lib/libhp-ux.a(kmetric.o):
		kmetric.c $Date: 2002/11/15 16:03:15 $Revision: r11r
			os/3 PATCH_11.00 (PHKL_28003)

cksum(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP:
	1504306723 6024 /usr/conf/lib/libhp-ux.a(kmetric.o)

	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP:
	1390940827 12944 /usr/conf/lib/libhp-ux.a(kmetric.o)

Patch Conflicts: None

Patch Dependencies:
	s700: 11.00: PHKL_18543
	s800: 11.00: PHKL_18543

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches:
	PHKL_27200:
	s700: 11.11
	s800: 11.11

Patch Package Size: 40 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_28003

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHKL_28003.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHKL_28003.  If you do not wish to retain a
	copy of the original software, include the patch_save_files
	option in the swinstall command above:

		-x patch_save_files=false

	WARNING: If patch_save_files is false when a patch is installed,
		 the patch cannot be deinstalled.  Please be careful
		 when using this feature.

	For future reference, the contents of the PHKL_28003.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHKL_28003.depot

	To put this patch on a magnetic tape and install from the
	tape drive, use the command:

		dd if=/tmp/PHKL_28003.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None