Date: Fri, 16 Feb 1996 08:39:45 -0500 From: ejc@nasvr1.cb.att.com To: freebsd-hardware@freebsd.org Cc: dob@nasvr1.cb.att.com Subject: wb L2 cache improves sp3g by 10% Message-ID: <9602161339.AA20731@ginger.cb.att.com>
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Hello
Dirty tag sram improves sp3g performance by 10% - 11%, with a
AMD 5x86 133 processor. I know there are a few people on this list
using this mainboard, so I thought I would pass the info on. I have
not done a make world yet. All times are in seconds.
kernel build
------------
WB L2 cache: 408 user 42 system total 450
WT L2 cache: 455 user 45 system total 500
10% improvement
3D rendering engine(mine), rendering utah raster teapot @ 10000 triangles
WB L2 cache: 205 total
WT L2 cache: 229 total
10.5% improvement
bonnie char IO which is cpu bound
---------------------------------
WB L2 cache: 2566KB/sec
WT L2 cache: 1544KB/sec
1M/second improvement
dmesg
-----
FreeBSD 2.2-CURRENT #0: Wed Feb 14 18:49:56 1996
ejc@gargoyle.bazzle.net:/var/usr/src/sys/compile/gargoyle
CPU: i486DX (486-class CPU)
Origin = "AuthenticAMD" Id = 0x4e4
real memory = 33554432 (32768K bytes)
avail memory = 31469568 (30732K bytes)
Probing for devices on PCI bus 0:
chip0 <Intel 82424ZX (Saturn) cache DRAM controller> rev 4 on pci0:0
chip1 <Intel 82378ZB PCI-ISA bridge> rev 3 on pci0:2
ncr0 <ncr 53c825 wide scsi> rev 2 int a irq 11 on pci0:5
ncr0 waiting for scsi devices to settle
(ncr0:0:0): "SEAGATE ST15150W 0020" type 0 fixed SCSI 2
sd0(ncr0:0:0): Direct-Access
sd0(ncr0:0:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8.
sd0(ncr0:0:0): WIDE SCSI (16 bit) enabled.
4095MB (8388315 512 byte sectors)
(ncr0:1:0): "QUANTUM LP240S GM240S01X 6.4" type 0 fixed SCSI 2
sd1(ncr0:1:0): Direct-Access
sd1(ncr0:1:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8.
234MB (479350 512 byte sectors)
(ncr0:2:0): "PLEXTOR CD-ROM DM-XX28 3.08" type 5 removable SCSI 2
cd0(ncr0:2:0): CD-ROM
cd present [325252 x 2048 byte records]
(ncr0:2:2): asynchronous.
(ncr0:2:3): asynchronous.
(ncr0:2:4): asynchronous.
(ncr0:2:5): asynchronous.
(ncr0:2:6): asynchronous.
(ncr0:2:7): asynchronous.
vga0 <VGA-compatible display device> rev 1 on pci0:6
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
lpt0 at 0x378-0x37f irq 7 on isa
lpt0: Interrupt-driven port
lp0: TCP/IP capable interface
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fdc0: NEC 72065B
fd0: 1.44MB 3.5in
npx0 on motherboard
npx0: INT 16 interface
new masks: bio c0000840, tty c003009a, net c003009a
-- ejc
work: ejc@nasvr1.cb.att.com
home: ec0@ganet.net
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