Date: Mon, 22 May 2000 16:57:11 -0400 From: "Matt White" <mwhite@dnaco.net> To: <smp@freebsd.org> Subject: Tips for Optimization? Message-ID: <002101bfc430$5037c610$0402030a@yiff>
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SMP Mailing List;
I've just recently gotten into the world of SMP FreeBSD. I have a P2B-D that
I've been playing with, and have been very impressed so far... (This is the
first time I've played with an SMP UNIX system.) I love the way it stays
snappy even when I'm doing something intense.
Are there any tips or tricks to optimizing performance? To compile an SMP
kernel I simply uncommented the first two lines in the Generic kernel in the
SMP section, but now I'm wondering if there are things I can be doing to get
the greatest performance possible.
First, the necessary bits of the system:
[mwhite@gooey ~]$ uname -a
FreeBSD gooey.bunnynet.org 3.4-STABLE FreeBSD 3.4-STABLE #50: Sun Apr 30
18:14:33 EDT 2000 mwhite@gooey.bunnynet.org:/src
/sys/compile/GOOEY i386
I plan to bring this box to 4.0 eventually, but I'd like to install a SCSI
drive (or two) to replace the IDE drives currently installed. Since this box
started out as a 2.2.5 system that's been upgraded along the way, I just
want to wipe it out and start over. =) Some of my config files are scary...
The output of mptable is below. It looks like there's only one I/O APIC on
this board, so I think I have that much setup correctly.
Thanks.
- Matt
============================================================================
===
MPTable, version 2.0.15
----------------------------------------------------------------------------
---
MP Floating Pointer Structure:
location: BIOS
physical address: 0x000f6e80
signature: '_MP_'
length: 16 bytes
version: 1.1
checksum: 0xba
mode: Virtual Wire
----------------------------------------------------------------------------
---
MP Config Table Header:
physical address: 0x000f6a70
signature: 'PCMP'
base table length: 244
version: 1.1
checksum: 0xa3
OEM ID: 'OEM00000'
Product ID: 'PROD00000000'
OEM table pointer: 0x00000000
OEM table size: 0
entry count: 22
local APIC address: 0xfee00000
extended table length: 0
extended table checksum: 0
----------------------------------------------------------------------------
---
MP Config Base Table Entries:
--
Processors: APIC ID Version State Family Model Step
Flags
1 0x11 BSP, usable 6 6 5
0x183fbff
0 0x11 AP, usable 6 6 5
0x183fbff
--
Bus: Bus ID Type
0 PCI
1 ISA
--
I/O APICs: APIC ID Version State Address
2 0x11 usable 0xfec00000
--
I/O Ints: Type Polarity Trigger Bus ID IRQ APIC ID PIN#
ExtINT conforms conforms 1 0 2 0
INT conforms conforms 1 1 2 1
INT conforms conforms 1 0 2 2
INT conforms conforms 1 3 2 3
INT conforms conforms 1 4 2 4
INT conforms conforms 1 5 2 5
INT conforms conforms 1 6 2 6
INT conforms conforms 1 7 2 7
INT conforms conforms 1 8 2 8
INT conforms conforms 1 9 2 9
INT conforms conforms 1 12 2 12
INT conforms conforms 1 14 2 14
INT conforms conforms 1 15 2 15
INT active-lo level 1 11 2 17
INT active-lo level 1 10 2 19
--
Local Ints: Type Polarity Trigger Bus ID IRQ APIC ID PIN#
ExtINT active-hi edge 1 0 255 0
NMI active-hi edge 1 0 255 1
----------------------------------------------------------------------------
---
# SMP kernel config file options:
# Required:
options SMP # Symmetric MultiProcessor Kernel
options APIC_IO # Symmetric (APIC) I/O
# Optional (built-in defaults will work in most cases):
#options NCPU=2 # number of CPUs
#options NBUS=2 # number of busses
#options NAPIC=1 # number of IO APICs
#options NINTR=24 # number of INTs
============================================================================
===
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