OBSOLETE Patch-ID# 100259-03
Keywords: 4.1.1 ufs_inactive syncip nfs performance attachment vmstat
Synopsis: OBSOLETED by 100622
Date: 13/Aug/91

SunOS RELEASE: 4.1.1 *4.1

Topic: UFS patch

BugID's fixed with this patch: 1054999 

Architectures for which this patch is available: sun3, sun3x, sun4, sun4c
						 *sun4/4.1

Patches which may conflict with this patch: Quickcheck 1.0

Obsolete By: 4.1.2

Problem Description:

BUGID: 1054999


On a 4/490 server, an NFS client is performing a large file copy operation.
After a few minutes, the server slows down and the LED's on the back move
very slowly.  It may take minutes to execute any command.  Running vmstat
during the copy shows a sudden increase in the page attach rate and the
CPU utilization hits 100%.

INSTALL:

As root:
 # mv /sys/sun{3,3x,4,4c}/OBJ/ufs_inode.o /sys/sun{3,3x,4,4c}/OBJ/ufs_inode.o.save

# cp sun{3,3x,4,4c}/ufs_inode.o /sys/sun{3,3x,4,4c}/OBJ/ufs_inode.o

A New kernel will need to be made and installed.
Please refer to the system and networking administration manual
for details on building and installing a new kernel