Patch-ID#  100281-01
Keywords: NFS servers freezing specfs swapping busy_system performance
Synopsis: SunOS 4.1.1, 4.1:NFS servers freezing, system looks like it crashed
Date: 25/Apr/91

SunOS RELEASE: 4.1, 4.1.1

Topic: specfs patch

BugID's fixed with this patch: 1057685

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

Obsolete By: SunOS 5.0

Problem Description:

BUGID: 1057685

	On a very busy system there were excessive flushes of
	swap device nodes.  This causes the system to go into
	a "freeze" state looking like it has crashed, but it
	is acutually VERY slow writing many pages to the 
	swap device.


INSTALL:
As root:
# mv /sys/sun{3,3x,4,4c}/OBJ/spec_vnodeops.o /sys/sun{3,3x,4,4c}/OBJ/spec_vnodeops.o.FCS

# cp sun{3,3x,4,4c}/{4.1,4.1.1}/spec_vnodeops.o /sys/sun{3,3x,4,4c}/OBJ/spec_vnodeops.o

rerun /etc/config <kernel-name>
and make and install the new kernel.
Please refer to the system and networking administration manual
for details on building and installing a new kernel