Date: Tue, 10 Feb 1998 13:43:46 +0200 (EET) From: mika ruohotie <bsdcur@shadows.aeon.net> To: current@FreeBSD.ORG Subject: scsi performance in current... Message-ID: <199802101143.NAA15114@shadows.aeon.net>
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where is my scsi performance going?
i installed the machine from the latest snap cdrom i had, october, remade
the kernel, couldnt use AHC options (kernel compilation failed) so i
made on without them, and bonnie gives me:
-------Sequential Output-------- ---Sequential Input--- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
sd0s1e 384 10018 69.4 9812 17.5 3363 8.9 12761 91.9 12824 20.8 124.6 2.1
that is a filesystem right after the root partition 64M root partition and
448M swap partition. and i am MOST impressed about the performance, this
is by far the fastest result i've ever seen. the drive is 9GB western digital
ultra wide, connected into 2940UW, machine is pII 262,5MHz (75MHzx3.5) with
128M SDRAM, the board is Soyo (i wanted asus but couldnt wait for few days
until the suppliers would've gotten those) dual pII, with one cpu. (i include
dmesg and kernel config to the end of this mail for those interested in
reading that).
for the record, the END of the drive still performs:
sd0s3f 384 7080 49.0 6971 12.3 2579 5.5 8181 58.4 8179 9.4 115.4 1.6
(that is about as end as i can get, the last filesystem is 468745 1K-blocks,
and the performance is still quite outstanding, outperforming some 4 disk!
ccd-setups i've gotten in the past)
and "bad" test with 8M file:
sd0s1e 8 14007 93.2 49940 82.9 35081 67.2 11700 78.5 139066 99.5 1193.5 9.0
BUT!!!
without changing ANYTHING else but cvsupping into the february 4th CURRENT
tree, and adding those three AHC kernel options, the machine is only able
to give me this:
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
sd0s1e 384 3384 23.6 2969 5.4 2200 6.1 11449 89.0 12176 20.9 147.8 2.2
sd0s1e 8 14216 97.5 53072 90.2 38811 99.9 6099 42.2 88255 99.8 3191.6 35.3
same filesystem, STILL EMPTY!
where did the disk i/o go? AARGH!
(for the record part2, i installed another drive, sd1, ibm ultra scsi 4GB,
and it gives me now:
sd1s1e 384 6532 45.8 5788 10.7 2206 7.1 7441 57.6 7457 16.0 94.3 1.6
and to me that looks about "right" for such a drive...)
dmesg:
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-CURRENT #0: Thu Feb 5 20:54:55 GMT 1998
root@tuuba:/usr/src/sys/compile/TUUBA
CPU: Pentium Pro (262.52-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x634 Stepping=4
Features=0x80fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,MMX>
real memory = 134217728 (131072K bytes)
avail memory = 128057344 (125056K bytes)
Probing for devices on PCI bus 0:
chip0: <Host to PCI bridge (vendor=8086 device=7180)> rev 0x03 on pci0.0.0
chip1: <PCI to PCI bridge (vendor=8086 device=7181)> rev 0x03 on pci0.1.0
chip2: <Intel 82371AB PCI to ISA bridge> rev 0x01 on pci0.7.0
ide_pci0: <Intel PIIX4 Bus-master IDE controller> rev 0x01 on pci0.7.1
chip3: <Intel 82371AB USB host controller> rev 0x01 int d irq 11 on pci0.7.2
chip4: <Intel 82371AB power management> rev 0x01 on pci0.7.3
ahc0: <Adaptec 2940 Ultra SCSI host adapter> rev 0x01 int a irq 10 on pci0.16.0
ahc0: aic7880 Wide Channel, SCSI Id=7, 16/255 SCBs
scbus0 at ahc0 bus 0
ahc0: target 0 Tagged Queuing Device
sd0 at scbus0 target 0 lun 0
sd0: <WDIGTL WDE9100 1.30> type 0 fixed SCSI 2
sd0: Direct-Access 8683MB (17783204 512 byte sectors)
ahc0:A:6: refuses WIDE negotiation. Using 8bit transfers
ahc0: target 6 Tagged Queuing Device
sd1 at scbus0 target 6 lun 0
sd1: <IBM DCAS-34330 S65A> type 0 fixed SCSI 2
sd1: Direct-Access 4134MB (8467200 512 byte sectors)
fxp0: <Intel EtherExpress Pro 10/100B Ethernet> rev 0x02 int a irq 10 on pci0.12
.0
fxp0: Ethernet address 00:a0:c9:45:6e:23
vga0: <S3 ViRGE DX/GX graphics accelerator> rev 0x01 int a irq 9 on pci0.18.0
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 on isa
sio0: type 16550A
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16550A
wdc0 at 0x1f0-0x1f7 irq 14 flags 0x20ff20ff on isa
wdc0: unit 0 (atapi): <ATAPI CD-ROM DRIVE 24X MAXIMUM/U45N>, removable, dma, iordy
atapi0.0: unknown phase
npx0 on motherboard
npx0: INT 16 interface
IP packet filtering initialized, divert enabled, unlimited logging
changing root device to sd0a
kernel config: (should i change anything there? remove/add)
machine "i386"
cpu "I686_CPU"
ident TUUBA
maxusers 128
options MATH_EMULATE
options INET
options FFS
options NFS
options "CD9660"
options PROCFS
options KERNFS
options QUOTA
options FAT_CURSOR
options "COMPAT_43"
options BOUNCE_BUFFERS
options UCONSOLE
options FAILSAFE
options SYSVSHM
options SYSVSEM
options SYSVMSG
options "MD5"
options CLK_CALIBRATION_LOOP
options "CLK_USE_I8254_CALIBRATION"
options "CLK_USE_I586_CALIBRATION"
options PQ_LARGECACHE
options CPU_UPGRADE_HW_CACHE
options AHC_TAGENABLE
options AHC_SCBPAGING_ENABLE
options AHC_ALLOW_MEMIO
options USERCONFIG
options VISUAL_USERCONFIG
options INCLUDE_CONFIG_FILE
options IPFIREWALL
options IPFIREWALL_VERBOSE
options IPDIVERT
options PERFMON
options COMPAT_LINUX
options ATAPI
options ATAPI_STATIC
config kernel root on sd0 swap on sd0 and sd1 dumps on sd0
controller isa0
controller pci0
controller wdc0 at isa? port "IO_WD1" bio irq 14 flags 0x20ff20ff vector wdintr
disk wd0 at wdc0 drive 0
disk wd1 at wdc0 drive 1
device wcd0
device sc0 at isa? port "IO_KBD" tty irq 1 vector scintr
device npx0 at isa? port "IO_NPX" flags 0x0 irq 13 vector npxintr
device sio0 at isa? port "IO_COM1" tty irq 4 vector siointr
device sio1 at isa? port "IO_COM2" tty irq 3 vector siointr
controller scbus0
controller ahc0
device sd0
device de0
device fxp0
pseudo-device loop
pseudo-device ether
pseudo-device pty 128
pseudo-device snp 4
pseudo-device gzip
pseudo-device bpfilter 4
mickey
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