Date: Tue, 5 Sep 2000 22:44:34 -0300 (ADT) From: The Hermit Hacker <scrappy@hub.org> To: freebsd-questions@freebsd.org Cc: freebsd-stable@freebsd.org Subject: Getting the most out of SMP ... Message-ID: <Pine.BSF.4.21.0009052233400.735-100000@thelab.hub.org>
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I have a machine (dmesg included below) that has two PIII-450s in her,
512Meg of RAM, etc, etc ... and I'm wondering if there is somethign that I
should be setting that to improve performance ...
Looking in LINT that are options that I'm not sure if/how I should be
setting ... and searching through the mailing archives or web site don't
appear to be bringing up anything .. for instance:
===============
# Options for the VM subsystem.
options PQ_CACHESIZE=512 # color for 512k/16k cache
# Deprecated options supported for backwards compatibility.
#options PQ_NOOPT # No coloring
#options PQ_LARGECACHE # color for 512k/16k cache
#options PQ_HUGECACHE # color for 1024k/16k cache
#options PQ_MEDIUMCACHE # color for 256k/16k cache
#options PQ_NORMALCACHE # color for 64k/16k cache
===============
I have these two set cause they "sound good" ... but without really
understandign the implications:
# CPU_DISABLE_5X86_LSSER disables load store serialize (i.e. enables
# reorder). This option should not be used if you use memory mapped
# I/O device(s).
#
# CPU_FASTER_5X86_FPU enables faster FPU exception handler.
Marc G. Fournier ICQ#7615664 IRC Nick: Scrappy
Systems Administrator @ hub.org
primary: scrappy@hub.org secondary: scrappy@{freebsd|postgresql}.org
Copyright (c) 1992-2000 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 4.0-STABLE #0: Wed Jul 19 15:12:46 EDT 2000
root@pgsql.tht.net:/usr/src/sys/compile/pgsql
Timecounter "i8254" frequency 1193182 Hz
CPU: Pentium III/Pentium III Xeon/Celeron (451.03-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x673 Stepping = 3
Features=0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,
PSE36,MMX,FXSR,XMM>
real memory = 536858624 (524276K bytes)
avail memory = 519450624 (507276K bytes)
Programming 24 pins in IOAPIC #0
IOAPIC #0 intpin 2 -> irq 0
IOAPIC #0 intpin 16 -> irq 11
IOAPIC #0 intpin 17 -> irq 10
IOAPIC #0 intpin 19 -> irq 12
FreeBSD/SMP: Multiprocessor motherboard
cpu0 (BSP): apic id: 1, version: 0x00040011, at 0xfee00000
cpu1 (AP): apic id: 0, version: 0x00040011, at 0xfee00000
io0 (APIC): apic id: 2, version: 0x00170011, at 0xfec00000
Preloaded elf kernel "kernel" at 0xc0289000.
Pentium Pro MTRR support enabled
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Intel 82443BX (440 BX) host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
pcib1: <Intel 82443BX (440 BX) PCI-PCI (AGP) bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pci1: <ATI Mach64-GB graphics accelerator> at 0.0 irq 11
isab0: <Intel 82371AB PCI to ISA bridge> at device 4.0 on pci0
isa0: <ISA bus> on isab0
pci0: <Intel PIIX4 ATA controller> at 4.1
pci0: <Intel 82371AB/EB (PIIX4) USB controller> at 4.2 irq 12
Timecounter "PIIX" frequency 3579545 Hz
chip1: <Intel 82371AB Power management controller> port 0xe800-0xe80f at device 4.3 on pci0
ahc0: <Adaptec aic7890/91 Ultra2 SCSI adapter> port 0xb000-0xb0ff mem 0xe1800000-0xe180
0fff irq 12 at device 6.0 on pci0
ahc0: aic7890/91 Wide Channel A, SCSI Id=7, 16/255 SCBs
fxp0: <Intel Pro 10/100B/100+ Ethernet> port 0xa800-0xa83f mem 0xe0800000-0xe08fffff,0x
e1000000-0xe1000fff irq 10 at device 11.0 on pci0
fxp0: Ethernet address 00:d0:b7:83:4b:9e
fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> on isa0
sc0: VGA <16 virtual consoles, flags=0x200>
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1 at port 0x2f8-0x2ff irq 3 on isa0
sio1: type 16550A
APIC_IO: Testing 8254 interrupt delivery
APIC_IO: routing 8254 via IOAPIC #0 intpin 2
Waiting 15 seconds for SCSI devices to settle
SMP: AP CPU #1 Launched!
Mounting root from ufs:/dev/da0s1a
da2 at ahc0 bus 0 target 2 lun 0
da2: <FUJITSU MAE3182LP 0112> Fixed Direct Access SCSI-2 device
da2: 80.000MB/s transfers (40.000MHz, offset 63, 16bit), Tagged Queueing Enabled
da2: 17431MB (35700480 512 byte sectors: 255H 63S/T 2222C)
da0 at ahc0 bus 0 target 0 lun 0
da0: <SEAGATE ST39103LW 0002> Fixed Direct Access SCSI-2 device
da0: 80.000MB/s transfers (40.000MHz, offset 15, 16bit), Tagged Queueing Enabled
da0: 8683MB (17783240 512 byte sectors: 255H 63S/T 1106C)
da1 at ahc0 bus 0 target 1 lun 0
da1: <SEAGATE ST39103LW 0002> Fixed Direct Access SCSI-2 device
da1: 80.000MB/s transfers (40.000MHz, offset 15, 16bit), Tagged Queueing Enabled
da1: 8683MB (17783240 512 byte sectors: 255H 63S/T 1106C)
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