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Date:      Sat, 4 Jul 1998 16:33:42 +0200 (MET DST)
From:      Rolf Larsson <rln@ludd.luth.se>
To:        freebsd-scsi@FreeBSD.ORG
Subject:   Two problems (Ultra2-performance and CD-recording)
Message-ID:  <199807041433.QAA13909@father.ludd.luth.se>

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--ELM899562821-13706-0_
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Hello people,

I have two problems which I suspect may be related to CAM.

The system in question is a twin-CPU PII-400 with 256MB ECC memory and
an on-board Adaptec 7890 controller with a Seagate Cheetah Ultra2-LW disk
and a Yamaha CD-R 4260t CD-writer. (entire dmesg & config attached below)

Source is 3.0-SNAP-980520 with the CAM patches from the same day.

Problem 1: I can't get the performance I want out of the disk. Probing 
when booting shows:

da0 at ahc0 bus 0 target 0 lun 0
da0: <SEAGATE ST39102LW 0004> Fixed Direct Access SCSI2 device
da0: Serial Number LJ01239200001840H6VQ
da0: 6.600MB/s transfers , 16bit), Tagged Queueing Enabled
da0: 8683MB (17783240 512 byte sectors: 64H 32S/T 8683C)

However, running camcontrol -i after booting gives me:

[root@habanero] /sys/i386/conf > camcontrol -i
<SEAGATE ST39102LW 0004> Fixed Direct Access SCSI2 device
Serial Number LJ01239200001840H6VQ
80.0MB/s transfers (40.0MHz, offset 0, 16bit), Tagged Queueing Enabled

which seems more reasonable (to me at least).

Playing around with bonnie, dd, etc gives no more than 5.2 MB/s throughput.
This is both with and without the CD-burner attached, so it is not the
cause of the problem. I would be happy to try out any ideas you have.


Problem 2: The CD-writer doesn't show up when booting. I am clueless on this
one, and would appreciate any hints (including "you have forgotten to add
option FOO, stupid!" :-) that may help us in getting it going.

Thank you,
-- 
Rolf Larsson 	<rln@ludd.luth.se> 	http://www.ludd.luth.se/~rln/

--ELM899562821-13706-0_
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Copyright (c) 1992-1998 FreeBSD Inc.
Copyright (c) 1982, 1986, 1989, 1991, 1993
	The Regents of the University of California. All rights reserved.
FreeBSD 3.0-980520-SNAP #6: Tue Jun 23 11:23:31 CEST 1998
    rln@habanero.marratech.com:/usr/src/sys/compile/HABANERO
Timecounter "i8254"  frequency 1193182 Hz  cost 3034 ns
CPU: Pentium Pro (400.91-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x651  Stepping=1
  Features=0x183fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,<b17>,MMX,<b24>>
real memory  = 268435456 (262144K bytes)
avail memory = 258207744 (252156K bytes)
DEVFS: ready for devices
Probing for devices on PCI bus 0:
chip0: <Intel 82443BX host to PCI bridge> rev 0x02 on pci0.0.0
chip1: <Intel 82443BX host to AGP bridge> rev 0x02 on pci0.1.0
chip2: <Intel 82371AB PCI to ISA bridge> rev 0x02 on pci0.4.0
ide_pci0: <Intel PIIX4 Bus-master IDE controller> rev 0x01 on pci0.4.1
chip3: <Intel 82371AB USB host controller> rev 0x01 int d irq 10 on pci0.4.2
chip4: <Intel 82371AB Power management controller> rev 0x02 on pci0.4.3
ahc0: <Adaptec aic7890/91 Ultra2 SCSI adapter> rev 0x00 int a irq 10 on pci0.6.0
ahc0: Using left over BIOS settings
ahc0: aic7890/91 Wide Channel A, SCSI Id=15, 32/255 SCBs
vga0: <S3 Trio graphics accelerator> rev 0x54 int a irq 10 on pci0.9.0
de0: <Digital 21140A Fast Ethernet> rev 0x22 int a irq 11 on pci0.10.0
de0: 21140A [10-100Mb/s] pass 2.2
de0: address 00:80:c8:47:6d:31
Probing for devices on PCI bus 1:
Probing for devices on the ISA bus:
sc0 at 0x60-0x6f irq 1 on motherboard
sc0: VGA color <16 virtual consoles, flags=0x0>
sio0 at 0x3f8-0x3ff irq 4 flags 0x10 on isa
sio0: type 16550A
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16550A
lpt0 at 0x378-0x37f irq 7 on isa
lpt0: Interrupt-driven port
lp0: TCP/IP capable interface
psm0 at 0x60-0x64 irq 12 on motherboard
psm0: model Generic PS/2 mouse, device ID 0
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fdc0: FIFO enabled, 8 bytes threshold
fd0: 1.44MB 3.5in
npx0 on motherboard
npx0: INT 16 interface
DEVFS: ready to run
struct nfsmount bloated (> 512bytes)
Try reducing NFS_MUIDHASHSIZ
ccd0-3: Concatenated disk drivers
de0: enabling 100baseTX port
changing root device to da0s1a
da0 at ahc0 bus 0 target 0 lun 0
da0: <SEAGATE ST39102LW 0004> Fixed Direct Access SCSI2 device 
da0: Serial Number LJ01239200001840H6VQ
da0: 6.600MB/s transfers , 16bit), Tagged Queueing Enabled
da0: 8683MB (17783240 512 byte sectors: 64H 32S/T 8683C)
(da0:ahc0:0:0:0): tagged openings now 58
(da0:ahc0:0:0:0): tagged openings now 57
(da0:ahc0:0:0:0): tagged openings now 56
(da0:ahc0:0:0:0): tagged openings now 55
(da0:ahc0:0:0:0): tagged openings now 54
(da0:ahc0:0:0:0): tagged openings now 53
(da0:ahc0:0:0:0): tagged openings now 52
(da0:ahc0:0:0:0): tagged openings now 51
(da0:ahc0:0:0:0): tagged openings now 50
(da0:ahc0:0:0:0): tagged openings now 49

--ELM899562821-13706-0_
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#
# SMP-GENERIC -- Smp machine with WD/AHx/NCR/BTx family disks
#
# For more information read the handbook part System Administration -> 
# Configuring the FreeBSD Kernel -> The Configuration File. 
# The handbook is available in /usr/share/doc/handbook or online as
# latest version from the FreeBSD World Wide Web server 
# <URL:http://www.FreeBSD.ORG/>;
#
# An exhaustive list of options and more detailed explanations of the 
# device lines is present in the ./LINT configuration file. If you are 
# in doubt as to the purpose or necessity of a line, check first in LINT.
#
#	$Id: SMP-GENERIC,v 1.12 1998/04/29 06:58:43 max Exp $

machine		"i386"
# SMP does NOT support 386/486 CPUs.
#cpu		"I386_CPU"
#cpu		"I486_CPU"

#cpu		"I586_CPU"
cpu		"I686_CPU"
ident		HABANERO
maxusers	42

# Create a SMP capable kernel (mandatory options):
options		SMP			# Symmetric MultiProcessor Kernel
options		APIC_IO			# Symmetric (APIC) I/O

# Optional, these are the defaults:
#options		NCPU=2			# number of CPUs
#options		NBUS=4			# number of busses
#options		NAPIC=1			# number of IO APICs
#options		NINTR=24		# number of INTs

# Lets always enable the kernel debugger for SMP.
options		DDB

# SMP shouldn't need x87 emulation, disable by default.
#options		MATH_EMULATE		#Support for x87 emulation

options		INET			#InterNETworking
options		FFS			#Berkeley Fast Filesystem
options		NFS			#Network Filesystem
options		MSDOSFS			#MSDOS Filesystem
options		"CD9660"		#ISO 9660 Filesystem
options		PROCFS			#Process filesystem
options		"COMPAT_43"		#Compatible with BSD 4.3 [KEEP THIS!]
options		SCSI_DELAY=15		#Be pessimistic about Joe SCSI device
options		BOUNCE_BUFFERS		#include support for DMA bounce buffers
options		UCONSOLE		#Allow users to grab the console
options		FAILSAFE		#Be conservative
options		USERCONFIG		#boot -c editor
options		VISUAL_USERCONFIG	#visual boot -c editor
options		DEVFS

config		kernel	root on da1s1

controller	isa0
#controller	eisa0
controller	pci0

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		"CMD640"	# work around CMD640 chip deficiency
controller	wdc0	at isa? disable port "IO_WD1" bio irq 14 vector wdintr
disk		wd0	at wdc0 drive 0
disk		wd1	at wdc0 drive 1

controller	wdc1	at isa? disable port "IO_WD2" bio irq 15 vector wdintr
disk		wd2	at wdc1 drive 0
disk		wd3	at wdc1 drive 1

options		ATAPI		#Enable ATAPI support for IDE bus
options		ATAPI_STATIC	#Don't do it as an LKM
device		wcd0	#IDE CD-ROM

# A single entry for any of these controllers (ncr, ahb, ahc, amd) is
# sufficient for any number of installed devices.
controller	ncr0
#controller	amd0
#controller	ahb0
controller	ahc0
#controller	isp0

options AHC_ALLOW_MEMIO
options AHC_SHARE_SCBS
#options AHC_SCBPAGING_ENABLE
#options AHC_TAGENABLE

#controller	bt0	at isa? port "IO_BT0" bio irq ? vector bt_isa_intr
#controller	uha0	at isa? port "IO_UHA0" bio irq ? drq 5 vector uhaintr
#controller	aha0	at isa? port "IO_AHA0" bio irq ? drq 5 vector ahaintr
#controller	aic0	at isa? port 0x340 bio irq 11 vector aicintr
#controller	nca0	at isa? port 0x1f88 bio irq 10 vector ncaintr
#controller	nca1	at isa? port 0x350 bio irq 5 vector ncaintr
#controller	sea0	at isa? bio irq 5 iomem 0xc8000 iosiz 0x2000 vector seaintr

controller	scbus0

device		da0

#device		od0	#See LINT for possible `od' options.

device		sa0

device		pass9

device		cd0	#Only need one of these, the code dynamically grows

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

#controller	matcd0	at isa? port 0x230 bio

#device		scd0	at isa? port 0x230 bio

# syscons is the default console driver, resembling an SCO console
device		sc0	at isa? port "IO_KBD" tty irq 1 vector scintr
# Enable this and PCVT_FREEBSD for pcvt vt220 compatible console driver
#device		vt0	at isa? port "IO_KBD" tty irq 1 vector pcrint
#options		PCVT_FREEBSD=210	# pcvt running on FreeBSD >= 2.0.5
options		XSERVER			# include code for XFree86
#options		FAT_CURSOR		# start with block cursor
# If you have a ThinkPAD, uncomment this along with the rest of the PCVT lines
#options		PCVT_SCANSET=2		# IBM keyboards are non-std

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

#
# Laptop support (see LINT for more options)
#
device		apm0    at isa?	disable	flags 0x31 # Advanced Power Management

# PCCARD (PCMCIA) support
#controller	card0
#device		pcic0	at card?
#device		pcic1	at card?

device		sio0	at isa? port "IO_COM1" flags 0x10 tty irq 4 vector siointr
device		sio1	at isa? port "IO_COM2" tty irq 3 vector siointr
#device		sio2	at isa? disable port "IO_COM3" tty irq 5 vector siointr
#device		sio3	at isa? disable port "IO_COM4" tty irq 9 vector siointr

device		lpt0	at isa? port? tty irq 7 vector lptintr
#device		lpt1	at isa? port? tty
#device		mse0	at isa? port 0x23c tty irq 5 vector mseintr

device		psm0	at isa? port "IO_KBD" conflicts tty irq 12 vector psmintr

# Order is important here due to intrusive probes, do *not* alphabetize
# this list of network interfaces until the probes have been fixed.
# Right now it appears that the ie0 must be probed before ep0. See
# revision 1.20 of this file.
device de0
device fxp0
device vx0

#device ed0 at isa? port 0x280 net irq  5 iomem 0xd8000 vector edintr
#device ed1 at isa? port 0x300 net irq  5 iomem 0xd8000 vector edintr
#device ie0 at isa? port 0x300 net irq 10 iomem 0xd0000 vector ieintr
#device ie1 at isa? port 0x360 net irq  7 iomem 0xd0000 vector ieintr
#device ep0 at isa? port 0x300 net irq 10 vector epintr
#device ex0 at isa? port? net irq? vector exintr
#device fe0 at isa? port 0x300 net irq ? vector feintr
#device le0 at isa? port 0x300 net irq 5 iomem 0xd0000 vector le_intr

pseudo-device	loop
pseudo-device	ether
pseudo-device	sl	1
# iijppp uses tun instead of ppp device
#pseudo-device	ppp	1
pseudo-device	tun	4
pseudo-device	bpfilter	4
pseudo-device	pty	16
pseudo-device	gzip		# Exec gzipped a.out's

# KTRACE enables the system-call tracing facility ktrace(2).
# This adds 4 KB bloat to your kernel, and slightly increases
# the costs of each syscall.
options		KTRACE		#kernel tracing

options		SYSVSHM
options		SYSVSEM
options		SYSVMSG
options		"VM86"
options		DDB_UNATTENDED
options		UCONSOLE
options		MROUTING
options 	FDESC
options		MFS
options		UNION

#device worm0 at scbus?	# SCSI worm
pseudo-device	ccd	4	#Concatenated disk driver
pseudo-device	su
options		"IBCS2"
options		COMPAT_LINUX

--ELM899562821-13706-0_--

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