Bom, acabei de fazer o teste mencionado.
Ambiente: 2 CPU fisicas com HTT
CPU: Intel(R) Xeon(TM) CPU 2.40GHz (2399.33-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf27 Stepping = 7
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
Hyperthreading: 2 logical CPUs
real memory = 4193452032 (3999 MB)
avail memory = 4105736192 (3915 MB)
ACPI APIC Table: <PTLTD APIC >
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
cpu0 (BSP): APIC ID: 0
cpu1 (AP): APIC ID: 1
cpu2 (AP): APIC ID: 6
cpu3 (AP): APIC ID: 7
Testes inciandos ha 2 horas atras. Resultados:
Sem HTT:
# 46m50.15s real 1h11m4.14s user 25m7.20s sys
[1] Done /usr/bin/time -h make -j4
buildworld > /tmp/bw.log
Com HTT:
# 34m12.11s real 43h10m11.11s user 24m13.29s sys
[1] Done /usr/bin/time -h make -j4
buildworld > /tmp/bw.log
Os world foram precedidos de "make cleanworld && make cleandir"
Mais informacoes sobre a maquina:
mptable
===============================================================================
MPTable, version 2.0.15
-------------------------------------------------------------------------------
MP Floating Pointer Structure:
location: BIOS
physical address: 0x000f6540
signature: '_MP_'
length: 16 bytes
version: 1.4
checksum: 0x3f
mode: Virtual Wire
-------------------------------------------------------------------------------
MP Config Table Header:
physical address: 0x0009e870
signature: 'PCMP'
base table length: 308
version: 1.4
checksum: 0xc3
OEM ID: ' '
Product ID: 'PLACER CRB '
OEM table pointer: 0x00000000
OEM table size: 0
entry count: 30
local APIC address: 0xfee00000
extended table length: 184
extended table checksum: 29
-------------------------------------------------------------------------------
MP Config Base Table Entries:
--
Processors: APIC ID Version State Family Model Step
Flags
0 0x14 BSP, usable 15 2 7
0xbfebfbff
6 0x14 AP, usable 15 2 7
0xbfebfbff
--
Bus: Bus ID Type
0 PCI
1 PCI
2 PCI
3 ISA
--
I/O APICs: APIC ID Version State Address
2 0x20 usable 0xfec00000
--
I/O Ints: Type Polarity Trigger Bus ID IRQ APIC ID PIN#
ExtINT active-hi edge 3 0 2
0
INT active-hi edge 3 1 2
1
INT active-hi edge 3 0 2
2
INT active-hi edge 3 3 2
3
INT active-hi edge 3 4 2
4
INT active-lo level 0 29:C 2
18
INT active-hi edge 3 6 2
6
INT active-hi edge 3 7 2
7
INT active-hi edge 3 8 2
8
INT active-hi edge 3 9 2
9
INT active-hi edge 3 10 2
10
INT active-lo level 0 29:A 2
16
INT active-hi edge 3 12 2
12
INT active-hi edge 3 13 2
13
INT active-hi edge 3 14 2
14
INT active-hi edge 3 15 2
15
INT active-lo level 0 29:B 2
19
INT active-lo level 0 29:D 2
23
INT active-lo level 0 31:B 2
17
INT active-lo level 2 2:A 2
20
INT active-lo level 2 8:A 2
19
--
Local Ints: Type Polarity Trigger Bus ID IRQ APIC ID PIN#
ExtINT active-hi edge 3 0 255
0
NMI active-hi edge 3 0 255
1
-------------------------------------------------------------------------------
MP Config Extended Table Entries:
--
System Address Space
bus ID: 0 address type: I/O address
address base: 0x0
address range: 0x10000
--
System Address Space
bus ID: 0 address type: I/O address
address base: 0x0
address range: 0x10000
--
System Address Space
bus ID: 0 address type: memory address
address base: 0x0
address range: 0xe0000000
--
System Address Space
bus ID: 0 address type: prefetch address
address base: 0xe0000000
address range: 0x18000000
--
System Address Space
bus ID: 0 address type: memory address
address base: 0xf8000000
address range: 0x6e00000
--
System Address Space
bus ID: 0 address type: memory address
address base: 0xfee01000
address range: 0x11ff000
--
System Address Space
bus ID: 1 address type: memory address
address base: 0xa0000
address range: 0x20000
--
System Address Space
bus ID: 4 address type: memory address
address base: 0xd4000
address range: 0xc000
--
Bus Heirarchy
bus ID: 3 bus info: 0x01 parent bus ID: 0
--
Compatibility Bus Address
bus ID: 0 address modifier: add
predefined range: 0x00000000
--
Compatibility Bus Address
bus ID: 0 address modifier: add
predefined range: 0x00000001
===============================================================================
top -S
PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU CPU COMMAND
11 root 171 52 0K 8K CPU3 3 146.2H 76.76% 76.76%
idle: cpu3
12 root 171 52 0K 8K RUN 2 142.1H 71.44% 71.44%
idle: cpu2
14 root 171 52 0K 8K CPU0 0 131.2H 61.43% 61.43%
idle: cpu0
13 root 171 52 0K 8K CPU1 1 129.9H 60.45% 60.45%
idle: cpu1
55 root 171 52 0K 8K pgzero 1 97:09 1.27% 1.27%
pagezero
40 root -44 -163 0K 8K WAIT 0 91:06 1.07% 1.07%
swi1: net
699 qmails 96 0 2192K 1628K select 0 42:17 1.03% 1.03%
qmail-send
3 root -8 0 0K 8K - 1 19:33 0.20% 0.20% g_up
58 root 20 0 0K 8K syncer 3 25:05 0.15% 0.15% syncer
97555 qmaild 96 0 1324K 812K select 1 0:10 0.15% 0.15%
qmail-smtpd
Infelizmente pela maquina ser DUAL nao cabe o mesmo teste com kernel UP,
apenas MP, pra saber o overhead que as rotinas SMP adicionariam. Mas da
pra ter uma ideia se faz ou nao diferenca ter HTT. Os dados estao ai,
mesmo ambiente, a unica diferenca eh um boot pra subir sem HTT.
Lembrando que esse nao eh um ambiente ideal pra bench, ja que buildworld
tem acesso constante em disco. Os benchs com conversao de video
(dvd/divx) sao os mais apropriados de "vida real". Seria bom tambem ter
uma calculadora tipo bc, porem, multithread.
--
Patrick Tracanelli
FreeBSD Brasil LTDA.
(31) 3281-9633 / 3281-3547
[EMAIL PROTECTED]
http://www.freebsdbrasil.com.br
"Long live Hanin Elias, Kim Deal!"
-------------------------
Histórico: http://www.fug.com.br/historico/html/freebsd/
Sair da lista: https://www.fug.com.br/mailman/listinfo/freebsd
