Date: Tue, 10 Sep 2002 13:16:40 -0400 (EDT) From: hackers@d.sparks.net To: freebsd-hackers@freebsd.org Subject: Dell 2650 SMP perf question Message-ID: <Pine.BSF.4.21.0209101051021.52716-100000@search.sparks.net>
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Hi All;
I'm stumped at how little improvement using an SMP kernel gives in a Dell
2650. System is dual 2400 xeon processors, 2 GB ram. It's intended to be
used as a database processor, among other things. A perl process that
read and input file and updates simple records in a mysql database
actually run much more slowly: processing ~2million records takes 817
seconds with SMP enabled and 262 seconds with it disabled.
Simple things like some_program.pl < some_big_file | another_program.pl
seem to take full advantage of the second processor, but this system is
supposed to run mysql.
Hyperthreading is turned off, I believe. There aren't any
"hyperthreading" swithes in the bios I could find, but the "logical
processor" option is turned off.
Clues why SMP is so much slower very welcome indeed.
--- David
Nitty Gritty details:
FreeBSD is 4.7prerelease, cvsupped 9/9/02. Dmesg output:
Copyright (c) 1992-2002 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 4.7-PRERELEASE #0: Mon Sep 9 21:23:39 GMT 2002
root@:/usr/src/sys/compile/DBSMP
Timecounter "i8254" frequency 1193182 Hz
CPU: Pentium 4 (2392.26-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf24 Stepping = 4
Features=0x3febfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,M
MX,FXSR,SSE,SSE2,SS,<b28>,ACC>
real memory = 2147418112 (2097088K bytes)
avail memory = 2088226816 (2039284K bytes)
Changing APIC ID for IO APIC #0 from 0 to 3 on chip
Changing APIC ID for IO APIC #1 from 0 to 4 on chip
Changing APIC ID for IO APIC #2 from 0 to 5 on chip
Programming 16 pins in IOAPIC #0
IOAPIC #0 intpin 2 -> irq 0
Programming 16 pins in IOAPIC #1
Programming 16 pins in IOAPIC #2
FreeBSD/SMP: Multiprocessor motherboard
cpu0 (BSP): apic id: 0, version: 0x00050014, at 0xfee00000
cpu1 (AP): apic id: 2, version: 0x00050014, at 0xfee00000
io0 (APIC): apic id: 3, version: 0x000f0011, at 0xfec00000
io2 (APIC): apic id: 5, version: 0x000f0011, at 0xfec02000
Preloaded elf kernel "kernel" at 0xc035a000.
md0: Malloc disk
Using $PIR table, 9 entries at 0xc00fc490
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Host to PCI bridge> on motherboard
IOAPIC #1 intpin 3 -> irq 2
IOAPIC #1 intpin 7 -> irq 3
IOAPIC #1 intpin 11 -> irq 5
pci0: <PCI bus> on pcib0
pci0: <unknown card> (vendor=0x1028, dev=0x000c) at 4.0 irq 2
pci0: <unknown card> (vendor=0x1028, dev=0x0008) at 4.1 irq 3
pci0: <unknown card> (vendor=0x1028, dev=0x000d) at 4.2 irq 5
pci0: <ATI Mach64-GR graphics accelerator> at 14.0
atapci0: <ServerWorks CSB5 ATA100 controller> port
0x8b0-0x8bf,0x8d8-0x8db,0x8d0-0x8d7,0x8c8-0x8cb,0x8c0-0x8c7 a
t device 15.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
pci0: <OHCI USB controller> at 15.2 irq 0
isab0: <PCI to ISA bridge (vendor=1166 device=0225)> at device 15.3 on
pci0
isa0: <ISA bus> on isab0
pcib1: <Host to PCI bridge> on motherboard
pci1: <PCI bus> on pcib1
pcib2: <Host to PCI bridge> on motherboard
pci2: <PCI bus> on pcib2
pcib3: <Host to PCI bridge> on motherboard
IOAPIC #1 intpin 12 -> irq 7
IOAPIC #1 intpin 13 -> irq 10
pci3: <PCI bus> on pcib3
bge0: <Broadcom BCM5701 Gigabit Ethernet> mem 0xfcf10000-0xfcf1ffff irq 7
at device 6.0 on pci3
bge0: Ethernet address: 00:06:5b:8c:a5:62
miibus0: <MII bus> on bge0
brgphy0: <BCM5701 10/100/1000baseTX PHY> on miibus0
brgphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX,
1000baseTX-FDX, auto
bge1: <Broadcom BCM5701 Gigabit Ethernet> mem 0xfcf00000-0xfcf0ffff irq 10
at device 8.0 on pci3
bge1: Ethernet address: 00:06:5b:8c:a5:63
miibus1: <MII bus> on bge1
brgphy1: <BCM5701 10/100/1000baseTX PHY> on miibus1
brgphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX,
1000baseTX-FDX, auto
pcib4: <Host to PCI bridge> on motherboard
pci4: <PCI bus> on pcib4
pcib8: <PCI to PCI bridge (vendor=8086 device=0309)> at device 8.0 on pci4
IOAPIC #1 intpin 14 -> irq 11
IOAPIC #1 intpin 15 -> irq 13
pci5: <PCI bus> on pcib8
ahc_pci0: <Adaptec aic7899 Ultra160 SCSI adapter> port 0xcc00-0xccff mem
0xfccff000-0xfccfffff irq 11 at device
6.0 on pci5
aic7899: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
ahc_pci1: <Adaptec aic7899 Ultra160 SCSI adapter> port 0xc800-0xc8ff mem
0xfccfe000-0xfccfefff irq 13 at device
6.1 on pci5
aic7899: Ultra160 Wide Channel B, SCSI Id=7, 32/253 SCBs
pcib5: <Host to PCI bridge> on motherboard
pci6: <PCI bus> on pcib5
pcib6: <Host to PCI bridge> on motherboard
pci7: <PCI bus> on pcib6
pcib7: <Host to PCI bridge> on motherboard
pci8: <PCI bus> on pcib7
orm0: <Option ROMs> at iomem
0xc0000-0xc7fff,0xc8000-0xcdfff,0xec000-0xeffff on isa0
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
kbd0 at atkbd0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1: configured irq 3 not in bitmap of probed irqs 0
ppc0: parallel port not found.
APIC_IO: Testing 8254 interrupt delivery
APIC_IO: Broken MP table detected: 8254 is not connected to IOAPIC #0
intpin 2
APIC_IO: routing 8254 via 8259 and IOAPIC #0 intpin 0
ata0-slave: ATAPI identify retries exceeded
SMP: AP CPU #1 Launched!
acd0: CDROM <TEAC CD-ROM CD-224E> at ata0-master PIO4
Waiting 5 seconds for SCSI devices to settle
pass1 at ahc0 bus 0 target 6 lun 0
pass1: <PE/PV 1x5 SCSI BP 0.25> Fixed Processor SCSI-2 device
pass1: 3.300MB/s transfers
da0 at ahc0 bus 0 target 0 lun 0
da0: <SEAGATE ST373405LC 2203> Fixed Direct Access SCSI-3 device
da0: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged Queueing
Enabled
da0: 70007MB (143374650 512 byte sectors: 255H 63S/T 8924C)
Mounting root from ufs:/dev/da0s1a
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