Date: 01 Jul 1999 17:19:53 -0400 From: Arcady Genkin <a.genkin@utoronto.ca> To: freebsd-questions@freebsd.org Subject: FreeBSD is painfully slow on my 486 Message-ID: <87aetg6pae.fsf@main.wgaf.net>
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I'm quite desperate by now -- I dumped Linux for FreeBSD on an i486
that I used as a firewall, and FreeBSD is much slower. I mean *really*
slow. The 486 is DX4 and works at 100MHz. It has 16M or RAM. Not
exactly a screamer, but it is fast enough for a machine with no X
installed.
I compiled a custom kernel, disabling pretty much everything.
I suspected that "Turbo" could have been turned off, but Linux kernel
from a rescue disk reports 49 bogomips, which seems to be
reasonable. I also know that the disk access is slower because fs's
are mounted syncronously, but it shouldn't be *that* slower.
I'll give you a couple of examples: kernel compilation takes 4 hours,
whereas somebody on this list reported that his similar 486 takes 30
minutes to compile a kernel. Midnight commander takes 7 seconds to
start, and I have to wait for 7-8 seconds for its file viewer to open
a file.
I hope somebody can help me determine whether FreeBSD doesn't support
something on my computer (for example, the chipset is ALI1429 -- Linux
had a special option for this chipset in kernel config). Perhaps I
should throw in the towel. Or is there still hope for me?
Below are startup messages and kernel config file. Could somebody
please have a look at them and tell me if everything looks sane?
Thanks a lot in advance, and I apologize for the size of this message.
FreeBSD 3.2-RELEASE #2: Thu Mar 11 16:40:53 EST 1999
root@door.wgaf.net:/usr/src/sys/compile/DOORKERNEL2
Timecounter "i8254" frequency 1193182 Hz
CPU: i486 DX4 (486-class CPU)
Origin = "GenuineIntel" Id = 0x480 Stepping=0
Features=0x3<FPU,VME>
real memory = 16777216 (16384K bytes)
avail memory = 14589952 (14248K bytes)
Preloaded elf kernel "kernel" at 0xc020e000.
Preloaded userconfig_script "/boot/kernel.conf" at 0xc020e09c.
Probing for devices on the ISA bus:
sc0 on isa
sc0: VGA color <16 virtual consoles, flags=0x0>
ed0 at 0x240-0x25f irq 10 on isa
ed0: address 00:80:c8:ec:0f:39, type NE2000 (16 bit)
ed1 at 0x300-0x31f irq 11 on isa
ed1: address 52:54:4c:17:c9:5c, type NE2000 (16 bit)
atkbdc0 at 0x60-0x6f on motherboard
atkbd0 irq 1 on isa
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fd0: 1.44MB 3.5in
wdc0 at 0x1f0-0x1f7 irq 14 flags 0x90ff on isa
wdc0: unit 0 (wd0): <WDC AC22100H>, LBA, multi-block-16
wd0: 2014MB (4124736 sectors), 1023 cyls, 64 heads, 63 S/T, 512 B/S
vga0 at 0x3b0-0x3df maddr 0xa0000 msize 131072 on isa
npx0 on motherboard
npx0: INT 16 interface
changing root device to wd0s1a
==================
# DOORKERNEL2
machine "i386"
cpu "I486_CPU"
ident "DOORKERNEL2"
maxusers 4
options "NO_F00F_HACK"
# options IPFIREWALL
# options IPDIVERT
options INET #InterNETworking
options FFS #Berkeley Fast Filesystem
options FFS_ROOT #FFS usable as root device [keep this!]
options PROCFS #Process filesystem
options "COMPAT_43" #Compatible with BSD 4.3 [KEEP THIS!]
#options FAILSAFE #Be conservative
#options USERCONFIG #boot -c editor
#options VISUAL_USERCONFIG #visual boot -c editor
config kernel root on wd0
controller isa0
controller fdc0 at isa? port "IO_FD1" bio irq 6 drq 2
disk fd0 at fdc0 drive 0
# options "CMD640" # work around CMD640 chip deficiency
controller wdc0 at isa? port "IO_WD1" bio irq 14 flags 0x90ff
disk wd0 at wdc0 drive 0
# atkbdc0 controlls both the keyboard and the PS/2 mouse
controller atkbdc0 at isa? port IO_KBD tty
device atkbd0 at isa? tty irq 1
device vga0 at isa? port ? conflicts
# syscons is the default console driver, resembling an SCO console
device sc0 at isa? tty
# math coprocessor config
device npx0 at isa? port IO_NPX irq 13
# device sio0 at isa? port "IO_COM1" flags 0x10 tty irq 4
# device sio1 at isa? port "IO_COM2" tty irq 3
# device sio2 at isa? disable port "IO_COM3" tty irq 5
# device sio3 at isa? disable port "IO_COM4" tty irq 9
device ed0 at isa? port 0x240 net irq 10 iomem 0xd8000
device ed1 at isa? port 0x300 net irq 11 iomem 0xd8000
pseudo-device loop
pseudo-device ether
pseudo-device pty 16
pseudo-device gzip # Exec gzipped a.out's
# This provides support for System V shared memory and message queues.
options SYSVSHM
options SYSVMSG
options SYSVSEM
pseudo-device bpfilter 4 #Berkeley packet filter
--
Arcady Genkin
"... without money one gets nothing in this world, not even a certificate
of eternal blessedness in the other world..." (S. Kierkegaard)
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