[#4549] nbench test failed for 561 SMP kernel in latest trunk
Submitted By: Vivi Li
Open Date
2008-10-20 04:01:07 Close Date
2008-10-22 04:37:42
Priority:
Medium Assignee:
Graf Yang
Status:
Closed Fixed In Release:
N/A
Found In Release:
N/A Release:
Category:
N/A Board:
N/A
Processor:
N/A Silicon Revision:
Is this bug repeatable?:
Yes Resolution:
Rejected
Uboot version or rev.:
Toolchain version or rev.:
toolchain-2008_Oct_10
App binary format:
N/A
Summary: nbench test failed for 561 SMP kernel in latest trunk
Details:
nbench test failed for 561 SMP kernel in latest trunk. It takes much longer time for SMP kernel to run nbench than kernel without SMP patch.
Bellow is the log.
--
cd bin^M
root:/bin> ./nbench^M
^M
BYTEmark* default Mode Benchmark ver. 2 (10/95)^M
Index-split by Andrew D. Balsa (11/97)^M
Linux/Unix* port by Uwe F. Mayer (12/96,11/97)^M
^M
TEST : Iterations/sec. : Old Index : New Index^M
: : Pentium 90* : AMD K6/233*^M
--------------------:------------------:-------------:------------^M
NUMERIC SORT : 291.56 : 7.48 : 2.46^M
STRING SORT : 1.9754 : 0.88 : 0.14^M
BITFIELD : 2.1107e+07 : 3.62 : 0.76^M
FP EMULATION : 4.4256 : 2.12 : 0.49^M
Case 1 ...FAIL
--
Follow-ups
--- Graf Yang 2008-10-21 04:10:03
run nbench without SMP patch: take 7'47''
root:/> date;nbench ;date
Mon Jan 1 00:20:11 UTC 2007
BYTEmark* default Mode Benchmark ver. 2 (10/95)
Index-split by Andrew D. Balsa (11/97)
Linux/Unix* port by Uwe F. Mayer (12/96,11/97)
TEST : Iterations/sec. : Old Index : New Index
: : Pentium 90* : AMD K6/233*
--------------------:------------------:-------------:------------
NUMERIC SORT : 86.2 : 2.21 : 0.73
STRING SORT : 3.8159 : 1.71 : 0.26
BITFIELD : 2.1624e+07 : 3.71 : 0.77
FP EMULATION : 6.9252 : 3.32 : 0.77
FOURIER : 26.841 : 0.03 : 0.02
ASSIGNMENT : 1.6328 : 6.21 : 1.61
IDEA : 291.72 : 4.46 : 1.32
HUFFMAN : 111.37 : 3.09 : 0.99
NEURAL NET : 0.030809 : 0.05 : 0.02
LU DECOMPOSITION : 1.0534 : 0.05 : 0.04
==========================ORIGINAL BYTEMARK RESULTS==========================
INTEGER INDEX : 3.268
FLOATING-POINT INDEX: 0.044
Baseline (MSDOS*) : Pentium* 90, 256 KB L2-cache, Watcom* compiler 10.0
==============================LINUX DATA BELOW===============================
CPU : Analog Devices ADSP-BF561 600(MHz CCLK) 100(MHz SCLK)
(mpz
L2 Cache : 16 KB(L1 icache) 32 KB(L1 dcache-wt) 0 KB(L2 cache)
OS : Linux 2.6.26.5-ADI-2009R1-pre
C compiler : bfin-uclinux-gcc
libc : static
MEMORY INDEX : 0.691
INTEGER INDEX : 0.923
FLOATING-POINT INDEX: 0.024
Baseline (LINUX) : AMD K6/233*, 512 KB L2-cache, gcc 2.7.2.3, libc-5.4.38
* Trademarks are property of their respective holder.
Mon Jan 1 00:27:58 UTC 2007
run nbench with SMP patch: take 7'53''
root:/> date;nbench;date
Mon Jan 1 00:08:39 UTC 2007
BYTEmark* default Mode Benchmark ver. 2 (10/95)
Index-split by Andrew D. Balsa (11/97)
Linux/Unix* port by Uwe F. Mayer (12/96,11/97)
TEST : Iterations/sec. : Old Index : New Index
: : Pentium 90* : AMD K6/233*
--------------------:------------------:-------------:------------
NUMERIC SORT : 81.535 : 2.09 : 0.69
STRING SORT : 3.727 : 1.67 : 0.26
BITFIELD : 2.1271e+07 : 3.65 : 0.76
FP EMULATION : 6.8147 : 3.27 : 0.75
FOURIER : 26.288 : 0.03 : 0.02
ASSIGNMENT : 1.5905 : 6.05 : 1.57
IDEA : 286.92 : 4.39 : 1.30
HUFFMAN : 109.38 : 3.03 : 0.97
NEURAL NET : 0.030003 : 0.05 : 0.02
LU DECOMPOSITION : 1.0274 : 0.05 : 0.04
==========================ORIGINAL BYTEMARK RESULTS==========================
INTEGER INDEX : 3.188
FLOATING-POINT INDEX: 0.042
Baseline (MSDOS*) : Pentium* 90, 256 KB L2-cache, Watcom* compiler 10.0
==============================LINUX DATA BELOW===============================
CPU : Dual Analog Devices ADSP-BF561 600(MHz CCLK) 100(MHz
SCLKz
L2 Cache : 16 KB(L1 icache) 32 KB(L1 dcache-wt) 0 KB(L2 cache)
OS : Linux 2.6.26.5-ADI-2009R1-pre
C compiler : bfin-uclinux-gcc
libc : static
MEMORY INDEX : 0.676
INTEGER INDEX : 0.899
FLOATING-POINT INDEX: 0.024
Baseline (LINUX) : AMD K6/233*, 512 KB L2-cache, gcc 2.7.2.3, libc-5.4.38
* Trademarks are property of their respective holder.
Mon Jan 1 00:16:32 UTC 2007
SMP patched kernel maybe a little slower than without SMP patch kernel, it's
normal.
--- Vivi Li 2008-10-22 04:37:42
This bug disappear in latest trunk. Close it.
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