From sysseh@devetir.qld.gov.au  Sat Jan 14 20:58:48 1995
Received: from bunyip.cc.uq.oz.au (bunyip.cc.uq.oz.au [130.102.2.1]) by freefall.cdrom.com (8.6.9/8.6.6) with SMTP id UAA19982 for <FreeBSD-gnats-submit@freebsd.org>; Sat, 14 Jan 1995 20:58:46 -0800
Received: from cc.uq.oz.au by bunyip.cc.uq.oz.au 
          id <14086-0@bunyip.cc.uq.oz.au>; Sun, 15 Jan 1995 14:58:10 +1000
Received: from priapus.devetir.qld.gov.au 
          by pandora.devetir.qld.gov.au (8.6.7/DEVETIR-E0.3a) with ESMTP 
          id OAA07760 
          for <FreeBSD-gnats-submit@freebsd.org@pandora.devetir.qld.gov.au>;
          Sun, 15 Jan 1995 14:16:22 +1000
Received: (from sysseh@localhost) by priapus.devetir.qld.gov.au (8.6.9/8.6.9) 
          id NAA01275; Sun, 15 Jan 1995 13:51:41 +1000
Message-Id: <199501150351.NAA01275@priapus.devetir.qld.gov.au>
Date: Sun, 15 Jan 1995 13:51:41 +1000
From: Stephen Hocking <sysseh@devetir.qld.gov.au>
Sender: sysseh@devetir.qld.gov.au
Reply-To: sysseh@devetir.qld.gov.au
To: FreeBSD-gnats-submit <FreeBSD-gnats-submit%freebsd.org@devetir.qld.gov.au>
Subject: Processes using NFS (eg to link an X server) will sometimes hang.
X-Send-Pr-Version: 3.2

>Number:         144
>Category:       kern
>Synopsis:       Processes using NFS (eg to link an X server) will sometimes hang.
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs (FreeBSD bugs mailing list)
>State:          closed
>Quarter:
>Keywords:
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Jan 14 21:00:01 1995
>Closed-Date:    Mon Apr 3 22:28:39 MET DST 1995
>Last-Modified:
>Originator:     Stephen Hocking
>Release:        FreeBSD 2.1.0-Development i386
>Organization:
DEVETIR
>Environment:

	CTM patch level 258

FreeBSD 2.1.0-Development #0: Sun Jan 15 11:59:16 EST 1995
    sysseh@priapus.devetir.qld.gov.au:/usr/src/sys/compile/priapus
CPU: i486DX (486-class CPU)  Id = 0x435  Origin = "GenuineIntel"
real memory  = 16384000 (4000 pages)
avail memory = 14860288 (3628 pages)
Probing for devices on the ISA bus:
sc0 at 0x60-0x6f irq 1 on motherboard
sc0: VGA color <12 virtual consoles, flags=0>
ed0 at 0x280-0x29f irq 5 maddr 0xd8000 msize 16384 on isa
ed0: address 00:00:c0:12:ae:5e, type WD8013EPC (16 bit) 
bpf: ed0 attached
lpt0 at 0x378-0x37f irq 7 on isa
lpt0: Interrupt-driven port
lp0: TCP/IP capable interface
sio0 at 0x3f8-0x3ff irq 4 on isa
sio0: type 16450
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16450
pca0 PC speaker audio driver
wdc0 at 0x1f0-0x1f7 irq 14 on isa
wdc0: unit 0 (wd0): <SAMSUNG SHD-3212A (APOLLO-4) AD>
wd0: 407MB (833664 total sec), 1002 cyl, 16 head, 52 sec, bytes/sec 512
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fdc0: (NEC 765) [0: fd0: 1.44MB 3.5in] [1: fd1: 1.2MB 5.25in]
npx0 on motherboard
npx0: INT 16 interface
snd2 at 0x220 irq 9 drq 1 on isa
snd2: <SoundBlaster Pro 4.12>
snd6 at 0x220 irq 9 drq 5 on isa
snd6: <SoundBlaster 16 4.12>
snd7 not found at 0x300
snd1 at 0x388 on isa
snd1: <Yamaha OPL-3 FM>
bpf: ds0 attached
bpf: lo0 attached
bpf: ppp0 attached
bpf: ppp1 attached
bpf: sl0 attached
bpf: sl1 attached
#
#
#	Priapus - the watchdog
#
#
# This directive is mandatory; it defines the architecture to be
# configured for; in this case, the 386 family.  You must also specify
# at least one CPU (the one you intend to run on); deleting the
# specification for CPUs you don't need to use may make parts of the
# system run faster
#
machine		"i386"
cpu		"I486_CPU"
cpu		"I586_CPU"		# a/k/a Pentium(tm)

# 
# This is the ``identification'' of the kernel.  Usually this should
# be the same as the name of your kernel.
#
ident		priapus

#
# The `maxusers' parameter controls the static sizing of a number of
# internal system tables by a complicated formula defined in param.c.
#
maxusers	20

#
#	Space savers
#
#options "NMBCLUSTERS=128"
#options "BUFPAGES=128"		# 512k for buffers


#
# A math emulator is mandatory if you wish to run on hardware which
# does not have a floating-point processor.  Pick either the original,
# bogus (but freely-distributable) math emulator, or a much more
# fully-featured but GPL-licensed emulator taken from Linux.
#
#options		MATH_EMULATE		#Support for x87 emulation
#options        GPL_MATH_EMULATE        #Support for x87 emualtion via
                                        #new math emulator 

#
# This directive defines a number of things:
#  - The compiled kernel is to be called `kernel'
#  - The root filesystem might be on partition wd0a
#  - The kernel can swap on wd0b and wd1b, defaulting to the former
#  - Crash dumps will be written to wd0b, if possible
#
config		kernel	root on wd0 swap on wd0 and wd1 dumps on wd0


#####################################################################
# COMPATIBILITY OPTIONS                                             

#
# Implement system calls compatible with 4.3BSD and older versions of
# FreeBSD.
#
options		"COMPAT_43"

#
# Allow user-mode programs to manipulat their local descriptor tables.
# This option is required for the WINE Windows(tm) emulator, and is
# not used by anything else (that we know of).
#
options		USER_LDT		#allow user-level control of i386 ldt

#
# These three options provide support for System V Interface
# Definition-style interprocess communication, in the form of shared
# memory, semaphores, and message queues, respectively.
#
options		SYSVSHM
options		SYSVSEM
options		SYSVMSG


#####################################################################
# DEBUGGING OPTIONS

#
# This line enables the kernel debugger, DDB, and the line following
# allocates extra space for a copy of the debugger symbol table which
# is stored in the initialized data area of the kernel.  If you change
# the latter option, remove db_aout.o before compiling.
#
#options		DODUMP			#We dump core-image on panic
#options		DDB			#Kernel debugger
#options		"SYMTAB_SPACE=113498"	#This kernel needs LOTS of symtable

# 
# KTRACE enables the system-call tracing facility ktrace(2).
#
options		KTRACE			#kernel tracing

#
# The DIAGNOSTIC option is used in a number of source files to enable
# extra sanity checking of internal structures.  This support is not
# enabled by default because of the extra time it would take to check
# for these conditions, which can only occur as a result of
# programming errors.
#
#options		DIAGNOSTIC


#####################################################################
# NETWORKING OPTIONS

#
# Protocol families:
#  Only the INET (Internet) family is officially supported in FreeBSD.
#  Source code for the NS (Xerox Network Service), ISO (OSI), and
#  CCITT (X.25) families is provided for amusement value, although we
#  try to ensure that it actually compiles.
#
options		INET			#Internet communications protocols
#options		ISO
#options		CCITT			#X.25 network layer
#options		NS			#Xerox NS communications protocols
#options		TPIP			#ISO TP class 4 over IP
#options		TPCONS			#ISO TP class 0 over X.25

#
# Network interfaces:
#  The `loop' pseudo-device is mandatory when networking is enabled.
#  The `ether' pseudo-device provides generic code to handle
#  Ethernets; it is mandatory when a Ethernet device driver is
#  configured.
#  The `sl' pseudo-device implements the Serial Line IP (SLIP) service.
#  The `ppp' pseudo-device implements the Point-to-Point Protocol.
#  The `bpfilter' pseudo-device enables the Berkeley Packet Filter.  Be
#  aware of the legal and administrative consequences of enabling this
#  option.  The number of devices determines the maximum number of
#  simultaneous BPF clients programs runnable.
#
pseudo-device	ether			#Generic Ethernet
pseudo-device	loop			#Network loop back device
pseudo-device	sl	2		#Serial Line IP
pseudo-device	ppp	2		#Point-to-point protocol
pseudo-device	bpfilter	4	#Berkeley packet filter

pseudo-device	vn	# Vnode driver (turns file into device)
pseudo-device	disc	# Discard device

#options		NSIP			#XNS over IP
#options		EON			#ISO CLNP over IP
#options		LLC			#X.25 link layer for Ethernets
#options		HDLC			#X.25 link layer for serial lines

#
# Internet family options:
#
# TCP_COMPAT_42 causes the TCP code to emulate certain bugs present in
# 4.2BSD.  This option should not be used unless you have a 4.2BSD
# machine and TCP connections fail.
#
# GATEWAY allows the machine to forward packets, and also configures
# larger static sizes of a number of system tables.
#
# MROUTING enables the kernel multicast packet forwarder, which works
# with mrouted(8).
#
# IPFIREWALL enables support for IP firewall construction, in
# conjunction with the `ipfw' program.  IPFIREWALL_VERBOSE does
# the obvious thing.
#
# ARP_PROXYALL enables global proxy ARP.  Beware!  This can burn
# your house down!  See netinet/if_ether.c for the gory details.
# (Eventually there will be a better management interface.)
#
options		"TCP_COMPAT_42"		#emulate 4.2BSD TCP bugs
#options		GATEWAY			#internetwork gateway
options		MROUTING		# Multicast routing
#options         IPFIREWALL              #firewall
#options         IPFIREWALL_VERBOSE      #print information about
					# dropped packets
#options		ARP_PROXYALL		# global proxy ARP


#####################################################################
# FILESYSTEM OPTIONS

#
# Only the root, /usr, and /tmp filesystems need be statically
# compiled; everything else will be automatically loaded at mount
# time.  (Exception: the UFS family---FFS, MFS, and LFS---cannot
# currently be demand-loaded.)  Some people still prefer to statically
# compile other filesystems as well.
#
# NB: The LFS, PORTAL, and UNION filesystems are known to be buggy,
# and WILL panic your system if you attempt to do anything with them.
# They are included here as an incentive for some enterprising soul to
# sit down and fix them.
#

# One of these is mandatory:
options		FFS			#Fast filesystem
options		NFS			#Network File System

# The rest are optional:
options		"CD9660"		#ISO 9660 filesystem
options		FDESC			#File descriptor filesystem
options		KERNFS			#Kernel filesystem
#options		LFS			#Log filesystem
options		MFS			#Memory File System
options		MSDOSFS			#MS DOS File System
options		NULLFS			#NULL filesystem
#options		PORTAL			#Portal filesystem
options		PROCFS			#Process filesystem
#options		UMAPFS			#UID map filesystem
options		UNION			#Union filesystem

#
# Disk quotas are supported when this option is enabled.  If you
# change the value of this option, you must do a `make clean' in your
# kernel compile directory in order to get a working kernel.
#
#options		QUOTA			#enable disk quotas


#####################################################################
#
#	IBCS2 (SCO Unix, ISC) SVR3.2 emulation stuff
#		- Allow me to run SCO binaries!
#
options	"COMPAT_IBCS2"
options "IBCS2"

#####################################################################
# SOUND DEVICE EXCLUSION

#
# Here we put exclude commands for the purpose of excluding device drivers
# for sound cards we do not have. This should hopefully
# result in a decreased text size of the kernel, leading to less paging
# on my memory challenged machine!
#

#options	EXCLUDE_AUDIO           # NO digital audio support
#options	EXCLUDE_SEQUENCER       # NO sequencer support
#options		"EXCLUDE_MPU401"        # NO MPU401 support
options		EXCLUDE_GUS             # NO GUS support
options		EXCLUDE_GUS_IODETECT    # NO GUS io detection
options		EXCLUDE_GUSMAX
options		"EXCLUDE_GUS16"
options		"EXCLUDE_AD1848"	# No Microsoft Sound System, GUS
options		EXCLUDE_MSS		# No Microsoft Sound System
options		EXCLUDE_PSS		# No Personal Sound System
#options	EXCLUDE_SB              # NO SB support
#options	EXCLUDE_SB_EMULATION    # NO PAS SB emulation support
#options	EXCLUDE_SBPRO           # NO SB Pro support
#options		"EXCLUDE_SB16"          # NO SB 16 support
#options	"EXCLUDE_YM3812"        # NO AdLib support
#options	"EXCLUDE_OPL3"          # NO OPL3 chip support
options		EXCLUDE_PAS             # NO Pro Audio Studio support
options		EXCLUDE_PRO_MIDI        # NO PAS MIDI support
#options	EXCLUDE_CHIP_MIDI       # NO MIDI chip support
#options	EXCLUDE_MIDI	      # NO MIDI support whatsoever

#####################################################################
# SCSI DEVICE CONFIGURATION

#
# The SCSI subsystem consists of the `base' SCSI code, a number of
# high-level SCSI device drivers, and the low-level host-adapter
# device drivers.  The host adapters are listed in the ISA and PCI
# device configuration sections below.
#
# Note that, unlike most similar systems, the FreeBSD SCSI system
# does not wire a particular device unit number to any specific
# SCSI bus unit number.  Rather, unit numbers are assigned in the
# order that the devices are found on the SCSI bus.  (This means that
# if you remove a disk drive, you may have to rewrite your /etc/fstab
# file.)  It is expected that this will change for FreeBSD 2.1.
#
#controller	scbus0	#base SCSI code
##device		ch0	#SCSI media changers
#device		sd0	#SCSI disks
#device		sd1
#device		sd2
#device		sd3
#device		st0	#SCSI tapes
#device		st1
#device		uk0			#unknown scsi devices

#
# The `cd' (SCSI read-only removable disk) driver is special in that
# the code dynamically allocates more units as they are required, with
# no limit (other than memory) to the number available.
#device		cd0	#SCSI CD-ROMs


#####################################################################
# MISCELLANEOUS DEVICES AND OPTIONS

#
# Of these, only the `log' device is truly mandatory.  The `pty'
# device usually turns out to be ``effectively mandatory'', as it is
# required for `telnetd', `rlogind', `screen', `emacs', and `xterm',
# among others.
#
pseudo-device	pty	16	#Pseudo ttys
pseudo-device	speaker		#Play IBM BASIC-style noises out your speaker
pseudo-device	log		#Kernel syslog interface (/dev/klog)
#pseudo-device	gzip		#Exec gzipped a.out's


#####################################################################
# HARDWARE DEVICE CONFIGURATION

# ISA and EISA devices:
# Currently there is no separate support for EISA.  There should be.
# Micro Channel is not supported at all.

#
# Mandatory ISA devices: isa, sc, npx
#
controller	isa0

#
# Options for `isa':
#
# ALLOW_CONFLICT_IOADDR suppresses the I/O address conflict checks, so
# that the PS/2 mouse driver doesn't conflict with the console driver.
#
# ALLOW_CONFLICT_IRQ suppresses the interrupt line conflict checks, so
# that multiple devices can share the same IRQ, provided that the
# hardware supports it (it usually doesn't).
#
# BOUNCE_BUFFERS provides support for ISA DMA on machines with more
# than 16 megabytes of memory.  It doesn't hurt on other machines.
# Some broken EISA and VLB hardware may need this, too.
options	ALLOW_CONFLICT_IOADDR
options	ALLOW_CONFLICT_IRQ
options		BOUNCE_BUFFERS

device		sc0	at isa? port "IO_KBD" tty irq 1 vector scintr

#
# Options for `sc':
#
# NCONS specifies the number of virtual consoles.  Specification of
# this value is mandatory.  Due to a compiler bug, when compiling with
# GCC 2.6.0 this option must be a power of two.
#
# FAT_CURSOR specifies the use of a large block cursor rather than the
# hardware default underline.
#
# HARDFONTS allows the driver to load an ISO-8859-1 font to replace
# the default font in your display adapter's memory.
#
# UCONSOLE enables code to let any user get output intended for the
# console.
#
options		"NCONS=4"
options		"FAT_CURSOR"
#options		HARDFONTS
options		UCONSOLE

device		npx0	at isa? port "IO_NPX" irq 13 vector npxintr

#
# Optional ISA and EISA devices:
#

#
# SCSI host adapters: `aha', `ahb', `aic', `bt', `pas'
#
# aha: Adaptec 154x
# ahb: Adaptec 174x
# aic: Adaptec 152x and sound cards using the Adaptec AIC-6360 (slow!)
# bt: Most Buslogic controllers
# pas: ProAudioSpectrum cards using the NCR 5380 (slow!)
# uha: UltraStore 14F and 34F
# sea: Seagate ST01/02 8 bit controller (slow!)
#
# Note that the order is important in order for Buslogic cards to be
# probed correctly.
#

#controller	bt0	at isa? port "IO_BT0" bio irq ? vector btintr
#controller	ahb0	at isa? bio irq ? vector ahbintr
#controller	aha0	at isa? port "IO_AHA0" bio irq ? drq 5 vector ahaintr
#controller	uha0	at isa? port "IO_UHA0" bio irq ? drq 5 vector uhaintr

#controller      aic0    at isa? port 0x340 bio irq 11 vector aicintr
#controller	pas0	at isa? port 0x1f88
#controller	pas1	at isa? port 0x1f84
#controller	pas2	at isa? port 0x1f8c
#controller	pas3	at isa? port 0x1e88

#controller	sea0	at isa? bio irq 5 iomem 0xdc000 iosiz 0x2000 vector seaintr

#
# ST-506, ESDI, and IDE hard disks: `wdc' and `wd'
#
# NB: ``Enhanced IDE'' is NOT supported at this time.
#
controller	wdc0	at isa? port "IO_WD1" bio irq 14 vector wdintr
disk		wd0	at wdc0 drive 0
disk		wd1	at wdc0 drive 1
#controller	wdc1	at isa? port "IO_WD2" bio irq 15 vector wdintr
#disk		wd2	at wdc1 drive 0
#disk		wd3	at wdc1 drive 1

#
# Standard floppy disk controllers and floppy tapes: `fdc', `fd', and `ft'
#
controller	fdc0	at isa? port "IO_FD1" bio irq 6 drq 2 vector fdintr
disk		fd0	at fdc0 drive 0
disk		fd1	at fdc0 drive 1
#tape		ft0	at fdc0 drive 2

#
# Options for `fd':
#
# FDSEEKWAIT selects a non-default head-settle time (i.e., the time to
# wait after a seek is performed).  The default value (1/32 s) is
# usually sufficient.  The units are inverse seconds, so a value of 16
# here means to wait 1/16th of a second; you should choose a power of
# two.
#
#options	FDSEEKWAIT="16"

#
# Other standard PC hardware: `lpt', `mse', `psm', `sio'
#
# lpt: printer port
# mse: Logitech and ATI InPort bus mouse ports
# psm: PS/2 mouse port (needs ALLOW_CONFLICT_IOADDR, above)
# sio: serial ports (see sio(4))

device		lpt0	at isa? port "IO_LPT1" tty irq 7 vector lptintr
#device		mse0	at isa? port 0x23c tty irq 5 vector mseintr
#device		psm0	at isa? port "IO_KBD" tty irq 12 vector psmintr
device		sio0	at isa? port "IO_COM1" tty irq 4 vector siointr
device		sio1	at isa? port "IO_COM2" tty irq 3 vector siointr

# Options for sio:
options		DSI_SOFT_MODEM		#code for DSI Softmodems

#
# Network interfaces: `ed', `el', `ep', `ie', `is', `le', `lnc'
#
# ed: Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
# el: 3Com 3C501 (slow!)
# ep: 3Com 3C509 (buggy)
# ie: AT&T StarLAN 10 and EN100; 3Com 3C507; unknown NI5210
# is: Isolan AT 4141-0; Isolink 4110; Novell NE2100
# le: Digital Equipment EtherWorks 2 and EtherWorks 3 (DEPCA, DE100,
#     DE101, DE200, DE201, DE202, DE203, DE204, DE205, DE422)
# lnc: unknown LANCE-based
# ze: PCMCIA ethernet controller.
#

device ed0 at isa? port 0x280 net irq 10 iomem 0xd8000 vector edintr
#device ie0 at isa? port 0x360 net irq 7 iomem 0xd0000 vector ieintr
#device is0 at isa? port 0x280 net irq 10 drq 7 vector isintr
#device ep0 at isa? port 0x300 net irq 10 vector epintr
#device el0 at isa? port 0x300 net irq 9 vector elintr
#device le0 at isa? port 0x300 net irq 5 iomem 0xd0000 vector le_intr
#device ze0 at isa? port 0x300 net irq 5 iomem 0xd8000 vector zeintr
##device lnc0 at isa? XXX FILL ME IN

#
# Audio drivers: `snd', `pca'
#
# snd: Voxware sound drivers for various cards (see file `sound.doc')
# pca: PCM audio through your PC speaker
#
# Someday, Voxware configuration will be done properly.
#
#device snd5 at isa? port 0x330 irq 6 vector mpuintr
#device snd4 at isa? port 0x220 irq 15 drq 6 vector gusintr
#device snd3 at isa? port 0x388 irq 10 drq 6 vector pasintr
device snd2 at isa? port 0x220 irq 9 drq 1 vector sbintr
device snd6 at isa? port 0x220 irq 9 drq 5 vector sbintr
device snd7 at isa? port 0x300
device snd1 at isa? port 0x388

device pca0 at isa? tty

#
# Miscellaneous hardware: `mcd', `wt', `ctx', `apm'
#
# mcd: Mitsumi CD-ROM
# wt: Wangtek and Archive QIC-02/QIC-36 tape drives
# ctx: Cortex-I frame grabber
# apm: Laptop Advanced Power Management (experimental)
#

#device		mcd0	at isa? port 0x300 bio irq 10 vector mcdintr
#device		wt0	at isa? port 0x300 bio irq 5 drq 1 vector wtintr
#device		ctx0	at isa? port 0x230 iomem 0xd0000

# NB: both lines are required
#device		apm0	at isa?
#options		APM

#
# PCI devices:
#
# The main PCI bus device is `pci'.  It provides auto-detection and
# configuration support for all devices on the PCI bus, using either
# configuration mode defined in the PCI specification.
#
# The `ncr' device provides support for the NCR 53C810 and 53C825
# self-contained SCSI host adapters.
#
# The `de' device provides support for the Digital Equipment DC21040
# self-contained Ethernet adapter.
#
#controller	pci0
#device		ncr0
#device		de0

>Description:

	When linking large programs on an NFS mounted filesystem, the linker
will sometimes hang without any NFS activity (as revealed by nfsstats)
taking place. It can be aborted by the interrupt character. The filesystem
in question is mounted with read & write sizes=1024, and has been operating
well  upto the time of the introduction of the merged buffer & VM cache.
This problem exhibits itself when the servers are fast or slow, and seems to
happen slightly more quickly when the NFS r/w sizes are at their default
(8k).

>How-To-Repeat:

Take XFree86 sound and attempt to build it all. Somewhere along the line
you'll see it stop. This has also been observed during a make world in
/usr/src, where /usr/obj was a NFS mounted FS. Altering the Xfree86 (where
both the sources and the objects were on the one NFS mounted filesystem) build
to have the Xservers written to /tmp did not appear to alter the problem.

>Fix:

	Unknown.
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: joerg 
State-Changed-When: Mon Apr 3 22:28:39 MET DST 1995 
State-Changed-Why:  
Stephen Hocking, who submitted the PR, claims 
it's fixed now. 
>Unformatted:



