So, at the request of bmilekic, I ran netpipe on a hyperthreading box (non
hyperthreading, I'll do when I can turn it off in BIOS next time I'm down
there)
however, I got a hint to turn machdep.cpu_idle_hlt on.
Dmesg: (With Hyperthreading)
CPU: Pentium 4 (1796.94-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf27 Stepping = 7
Features=0xffffffffbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,P
GE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,<b31>>
real memory = 1073217536 (1023 MB)
avail memory = 1034719232 (986 MB)
Programming 24 pins in IOAPIC #0
IOAPIC #0 intpin 2 -> irq 0
Programming 24 pins in IOAPIC #1
Programming 24 pins in IOAPIC #2
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
cpu0 (BSP): apic id: 0, version: 0x00050014, at 0xfee00000
cpu1 (AP): apic id: 6, version: 0x00050014, at 0xfee00000
cpu2 (AP): apic id: 1, version: 0x00050014, at 0xfee00000
cpu3 (AP): apic id: 7, version: 0x00050014, at 0xfee00000
io0 (APIC): apic id: 2, version: 0x00178020, at 0xfec00000
io1 (APIC): apic id: 3, version: 0x00178020, at 0xfec80000
io2 (APIC): apic id: 4, version: 0x00178020, at 0xfec80400
I tested with machdep.cpu_idle_hlt=0 and machdep.cpu_idle_hlt=1
The results are here:
http://bsdunix.net/performance
all information on what command line options I used is in there.
the difference with it on is pretty substantial, might be worth noting in
tuning(7)
-Trish
--
Trish Lynch trish@bsdunix.net
Ecartis Core Team trish@listmistress.org
EFNet IRC Operator @ efnet.demon.co.uk AilleCat@EFNet
Key fingerprint = 781D 2B47 AA4B FC88 B919 0CD6 26B2 1D62 6FC1 FF16
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-current" in the body of the message