several reports herein. first, machine specs. then, multiple compiler
outputs with different compiler versions. no real substantial variation
regardless of flags for best-case time.
machine is also loaded running services like web server, ssh sessions, etc.
not a heavy load, but may be a slight impact.
machine specs:
1.33 GHz Athlon (non-XP)
Asus A7V333 motherboard (Fast memory settings)
512 (2x256) MB DDR-SDRAM Crucial (Cas 2)
++++++++++++++
/proc/cpuinfo:
--------------
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 4
model name : AMD Athlon(tm) Processor
stepping : 4
cpu MHz : 1332.992
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 mmx fxsr syscall mmxext 3dnowext 3dnow
bogomips : 2660.76
++++++++++
/proc/pci:
----------
PCI devices found:
Bus 0, device 0, function 0:
Host bridge: VIA Technologies, Inc. VT8367 [KT266] (rev 0).
Prefetchable 32 bit memory at 0xe0000000 [0xe7ffffff].
Bus 0, device 1, function 0:
PCI bridge: VIA Technologies, Inc. VT8367 [KT266 AGP] (rev 0).
Master Capable. No bursts. Min Gnt=8.
Bus 0, device 5, function 0:
Multimedia audio controller: C-Media Electronics Inc CM8738 (rev
16). IRQ 10.
Master Capable. Latency=32. Min Gnt=2.Max Lat=24.
I/O at 0xd800 [0xd8ff].
Bus 0, device 6, function 0:
RAID bus controller: Promise Technology, Inc. PDC20276 IDE (rev 1).
IRQ 5.
Master Capable. Latency=32. Min Gnt=4.Max Lat=18.
I/O at 0xd400 [0xd407].
I/O at 0xd000 [0xd003].
I/O at 0xb800 [0xb807].
I/O at 0xb400 [0xb403].
I/O at 0xb000 [0xb00f].
Non-prefetchable 32 bit memory at 0xdb800000 [0xdb803fff].
Bus 0, device 7, function 0:
FireWire (IEEE 1394): Texas Instruments TSB43AB21 IEEE-1394
Controller (PHY/Link) 1394a-2000 (rev 0). IRQ 10.
Master Capable. Latency=35. Min Gnt=2.Max Lat=4.
Non-prefetchable 32 bit memory at 0xdb000000 [0xdb0007ff].
Non-prefetchable 32 bit memory at 0xda800000 [0xda803fff].
Bus 0, device 9, function 0:
USB Controller: VIA Technologies, Inc. UHCI USB (rev 80).
IRQ 5.
Master Capable. Latency=32.
I/O at 0xa800 [0xa81f].
Bus 0, device 9, function 1:
USB Controller: VIA Technologies, Inc. UHCI USB (#2) (rev 80).
IRQ 11.
Master Capable. Latency=32.
I/O at 0xa400 [0xa41f].
Bus 0, device 17, function 2:
USB Controller: VIA Technologies, Inc. UHCI USB (#3) (rev 35).
IRQ 9.
Master Capable. Latency=32.
I/O at 0x8800 [0x881f].
Bus 0, device 17, function 3:
USB Controller: VIA Technologies, Inc. UHCI USB (#4) (rev 35).
IRQ 9.
Master Capable. Latency=32.
I/O at 0x8400 [0x841f].
Bus 0, device 9, function 2:
USB Controller: VIA Technologies, Inc. USB 2.0 (rev 81).
IRQ 10.
Master Capable. Latency=32.
Non-prefetchable 32 bit memory at 0xda000000 [0xda0000ff].
Bus 0, device 13, function 0:
Ethernet controller: Macronix, Inc. [MXIC] MX987x5 (rev 32).
IRQ 11.
Master Capable. Latency=32. Min Gnt=8.Max Lat=56.
I/O at 0xa000 [0xa0ff].
Non-prefetchable 32 bit memory at 0xd9800000 [0xd98000ff].
Bus 0, device 15, function 0:
Ethernet controller: Macronix, Inc. [MXIC] MX987x5 (#2) (rev 32).
IRQ 12.
Master Capable. Latency=32. Min Gnt=8.Max Lat=56.
I/O at 0x9400 [0x94ff].
Non-prefetchable 32 bit memory at 0xd8800000 [0xd88000ff].
Bus 0, device 14, function 0:
SCSI storage controller: Tekram Technology Co.,Ltd. TRM-S1040 (rev
1). IRQ 10.
Master Capable. Latency=32.
I/O at 0x9800 [0x98ff].
Non-prefetchable 32 bit memory at 0xd9000000 [0xd9000fff].
Bus 0, device 16, function 0:
Multimedia video controller: Brooktree Corporation Bt878 (rev 2).
IRQ 5.
Master Capable. Latency=32. Min Gnt=16.Max Lat=40.
Prefetchable 32 bit memory at 0xde000000 [0xde000fff].
Bus 0, device 16, function 1:
Multimedia controller: Brooktree Corporation Bt878 (rev 2).
IRQ 5.
Master Capable. Latency=32. Min Gnt=4.Max Lat=255.
Prefetchable 32 bit memory at 0xdd800000 [0xdd800fff].
Bus 0, device 17, function 0:
ISA bridge: PCI device 1106:3147 (VIA Technologies, Inc.) (rev 0).
Bus 0, device 17, function 1:
IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 6).
Master Capable. Latency=32.
I/O at 0x9000 [0x900f].
Bus 1, device 0, function 0:
VGA compatible controller: nVidia Corporation Riva TnT [NV04] (rev
4). IRQ 11.
Master Capable. Latency=64. Min Gnt=5.Max Lat=1.
Non-prefetchable 32 bit memory at 0xdc000000 [0xdcffffff].
Prefetchable 32 bit memory at 0xdf000000 [0xdfffffff].
Default gcc is gcc 2.95.3:
chadh@goliath athlon $ gcc -v
Reading specs from /usr/lib/gcc-lib/i686-pc-linux-gnu/2.95.3/specs
gcc version 2.95.3 20010315 (release)
gcc-3.1 is gcc 3.1:
chadh@goliath athlon $ gcc-3.1 -v
Reading specs from /usr/lib/gcc-lib/i686-pc-linux-gnu/3.1/specs
Configured with: /var/tmp/portage/gcc-3.1-r7/work/gcc-3.1/configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --host=i686-pc-linux-gnu --build=i686-pc-linux-gnu --target=i686-pc-linux-gnu --enable-threads=posix --enable-long-long --enable-cstdio=stdio --enable-clocale=generic --disable-checking --with-gxx-include-dir=/usr/include/g++-v31 --with-local-prefix=/usr/local --with-system-zlib --enable-shared --enable-nls --without-included-gettext --program-suffix=-3.1
Thread model: posix
gcc version 3.1
Results:
gcc athlon.c
-----------
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13448 cycles per page
copy_page function '2.4 non MMX' took 28448 cycles per page
copy_page function '2.4 MMX fallback' took 28420 cycles per page
copy_page function '2.4 MMX version' took 13446 cycles per page
copy_page function 'faster_copy' took 8163 cycles per page
copy_page function 'even_faster' took 8213 cycles per page
copy_page function 'no_prefetch' took 6472 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13434 cycles per page
copy_page function '2.4 non MMX' took 28435 cycles per page
copy_page function '2.4 MMX fallback' took 28453 cycles per page
copy_page function '2.4 MMX version' took 13361 cycles per page
copy_page function 'faster_copy' took 8118 cycles per page
copy_page function 'even_faster' took 8082 cycles per page
copy_page function 'no_prefetch' took 6448 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13393 cycles per page
copy_page function '2.4 non MMX' took 28392 cycles per page
copy_page function '2.4 MMX fallback' took 28148 cycles per page
copy_page function '2.4 MMX version' took 13419 cycles per page
copy_page function 'faster_copy' took 8110 cycles per page
copy_page function 'even_faster' took 8204 cycles per page
copy_page function 'no_prefetch' took 6454 cycles per page
++++++++++++++++
gcc -O3 athlon.c
----------------
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 14060 cycles per page
copy_page function '2.4 non MMX' took 28371 cycles per page
copy_page function '2.4 MMX fallback' took 28396 cycles per page
copy_page function '2.4 MMX version' took 13405 cycles per page
copy_page function 'faster_copy' took 8212 cycles per page
copy_page function 'even_faster' took 8494 cycles per page
copy_page function 'no_prefetch' took 6090 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13406 cycles per page
copy_page function '2.4 non MMX' took 28389 cycles per page
copy_page function '2.4 MMX fallback' took 28452 cycles per page
copy_page function '2.4 MMX version' took 13404 cycles per page
copy_page function 'faster_copy' took 8439 cycles per page
copy_page function 'even_faster' took 8260 cycles per page
copy_page function 'no_prefetch' took 6124 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13393 cycles per page
copy_page function '2.4 non MMX' took 28324 cycles per page
copy_page function '2.4 MMX fallback' took 28338 cycles per page
copy_page function '2.4 MMX version' took 13399 cycles per page
copy_page function 'faster_copy' took 8431 cycles per page
copy_page function 'even_faster' took 8126 cycles per page
copy_page function 'no_prefetch' took 6122 cycles per page
+++++++++++++++++++++++++++++++++++++++
gcc -O3 -march=i686 -mcpu=i686 athlon.c
---------------------------------------
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13345 cycles per page
copy_page function '2.4 non MMX' took 28367 cycles per page
copy_page function '2.4 MMX fallback' took 28351 cycles per page
copy_page function '2.4 MMX version' took 13458 cycles per page
copy_page function 'faster_copy' took 8420 cycles per page
copy_page function 'even_faster' took 8260 cycles per page
copy_page function 'no_prefetch' took 6119 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13398 cycles per page
copy_page function '2.4 non MMX' took 28401 cycles per page
copy_page function '2.4 MMX fallback' took 28186 cycles per page
copy_page function '2.4 MMX version' took 14125 cycles per page
copy_page function 'faster_copy' took 8209 cycles per page
copy_page function 'even_faster' took 8306 cycles per page
copy_page function 'no_prefetch' took 6115 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13436 cycles per page
copy_page function '2.4 non MMX' took 28450 cycles per page
copy_page function '2.4 MMX fallback' took 28395 cycles per page
copy_page function '2.4 MMX version' took 13429 cycles per page
copy_page function 'faster_copy' took 8450 cycles per page
copy_page function 'even_faster' took 8283 cycles per page
copy_page function 'no_prefetch' took 6117 cycles per page
++++++++++++++++++++++++++++++++++
gcc -O3 -march=k6 mcpu=k6 athlon.c
----------------------------------
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13369 cycles per page
copy_page function '2.4 non MMX' took 28292 cycles per page
copy_page function '2.4 MMX fallback' took 28058 cycles per page
copy_page function '2.4 MMX version' took 13381 cycles per page
copy_page function 'faster_copy' took 8461 cycles per page
copy_page function 'even_faster' took 8520 cycles per page
copy_page function 'no_prefetch' took 6113 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13414 cycles per page
copy_page function '2.4 non MMX' took 28120 cycles per page
copy_page function '2.4 MMX fallback' took 28994 cycles per page
copy_page function '2.4 MMX version' took 13391 cycles per page
copy_page function 'faster_copy' took 8238 cycles per page
copy_page function 'even_faster' took 8577 cycles per page
copy_page function 'no_prefetch' took 6136 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13489 cycles per page
copy_page function '2.4 non MMX' took 28185 cycles per page
copy_page function '2.4 MMX fallback' took 28417 cycles per page
copy_page function '2.4 MMX version' took 13464 cycles per page
copy_page function 'faster_copy' took 8277 cycles per page
copy_page function 'even_faster' took 8334 cycles per page
copy_page function 'no_prefetch' took 6132 cycles per page
++++++++++++++++
gcc-3.1 athlon.c
----------------
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13447 cycles per page
copy_page function '2.4 non MMX' took 28371 cycles per page
copy_page function '2.4 MMX fallback' took 28337 cycles per page
copy_page function '2.4 MMX version' took 13445 cycles per page
copy_page function 'faster_copy' took 8421 cycles per page
copy_page function 'even_faster' took 8535 cycles per page
copy_page function 'no_prefetch' took 6449 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13378 cycles per page
copy_page function '2.4 non MMX' took 28340 cycles per page
copy_page function '2.4 MMX fallback' took 28364 cycles per page
copy_page function '2.4 MMX version' took 13389 cycles per page
copy_page function 'faster_copy' took 8425 cycles per page
copy_page function 'even_faster' took 8498 cycles per page
copy_page function 'no_prefetch' took 6423 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13316 cycles per page
copy_page function '2.4 non MMX' took 28466 cycles per page
copy_page function '2.4 MMX fallback' took 28416 cycles per page
copy_page function '2.4 MMX version' took 13445 cycles per page
copy_page function 'faster_copy' took 8172 cycles per page
copy_page function 'even_faster' took 8322 cycles per page
copy_page function 'no_prefetch' took 6421 cycles per page
++++++++++++++++++++
gcc-3.1 -O3 athlon.c
--------------------
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13452 cycles per page
copy_page function '2.4 non MMX' took 28625 cycles per page
copy_page function '2.4 MMX fallback' took 28431 cycles per page
copy_page function '2.4 MMX version' took 13459 cycles per page
copy_page function 'faster_copy' took 8225 cycles per page
copy_page function 'even_faster' took 8250 cycles per page
copy_page function 'no_prefetch' took 6174 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13327 cycles per page
copy_page function '2.4 non MMX' took 28407 cycles per page
copy_page function '2.4 MMX fallback' took 28433 cycles per page
copy_page function '2.4 MMX version' took 13422 cycles per page
copy_page function 'faster_copy' took 8214 cycles per page
copy_page function 'even_faster' took 8517 cycles per page
copy_page function 'no_prefetch' took 6182 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13473 cycles per page
copy_page function '2.4 non MMX' took 28443 cycles per page
copy_page function '2.4 MMX fallback' took 28472 cycles per page
copy_page function '2.4 MMX version' took 13444 cycles per page
copy_page function 'faster_copy' took 8077 cycles per page
copy_page function 'even_faster' took 8479 cycles per page
copy_page function 'no_prefetch' took 6192 cycles per page
+++++++++++++++++++++++++++++++++++++++++++
gcc-3.1 -O3 -march=i686 -mcpu=i686 athlon.c
-------------------------------------------
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13424 cycles per page
copy_page function '2.4 non MMX' took 28320 cycles per page
copy_page function '2.4 MMX fallback' took 28360 cycles per page
copy_page function '2.4 MMX version' took 13308 cycles per page
copy_page function 'faster_copy' took 8437 cycles per page
copy_page function 'even_faster' took 8233 cycles per page
copy_page function 'no_prefetch' took 6132 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13414 cycles per page
copy_page function '2.4 non MMX' took 28406 cycles per page
copy_page function '2.4 MMX fallback' took 28379 cycles per page
copy_page function '2.4 MMX version' took 13397 cycles per page
copy_page function 'faster_copy' took 8202 cycles per page
copy_page function 'even_faster' took 8274 cycles per page
copy_page function 'no_prefetch' took 6182 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13361 cycles per page
copy_page function '2.4 non MMX' took 28395 cycles per page
copy_page function '2.4 MMX fallback' took 28371 cycles per page
copy_page function '2.4 MMX version' took 13416 cycles per page
copy_page function 'faster_copy' took 8271 cycles per page
copy_page function 'even_faster' took 8281 cycles per page
copy_page function 'no_prefetch' took 6186 cycles per page
++++++++++++++++++++++++++++++++++++++++++++++++
gcc-3.1 -O3 -march=athlon -mcpu=athlon athlon.c
------------------------------------------------
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13408 cycles per page
copy_page function '2.4 non MMX' took 28380 cycles per page
copy_page function '2.4 MMX fallback' took 28357 cycles per page
copy_page function '2.4 MMX version' took 13380 cycles per page
copy_page function 'faster_copy' took 8442 cycles per page
copy_page function 'even_faster' took 8080 cycles per page
copy_page function 'no_prefetch' took 6179 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13429 cycles per page
copy_page function '2.4 non MMX' took 28376 cycles per page
copy_page function '2.4 MMX fallback' took 28360 cycles per page
copy_page function '2.4 MMX version' took 14140 cycles per page
copy_page function 'faster_copy' took 8342 cycles per page
copy_page function 'even_faster' took 8231 cycles per page
copy_page function 'no_prefetch' took 6121 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13417 cycles per page
copy_page function '2.4 non MMX' took 28408 cycles per page
copy_page function '2.4 MMX fallback' took 28397 cycles per page
copy_page function '2.4 MMX version' took 13403 cycles per page
copy_page function 'faster_copy' took 8217 cycles per page
copy_page function 'even_faster' took 8493 cycles per page
copy_page function 'no_prefetch' took 6226 cycles per page
+++++++++++++++++++++++++++++++++++++++++++++++++++
gcc-3.1 -O3 -march=athlon-4 -mcpu=athlon-4 athlon.c
----------------------------------------------------
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13371 cycles per page
copy_page function '2.4 non MMX' took 28983 cycles per page
copy_page function '2.4 MMX fallback' took 28330 cycles per page
copy_page function '2.4 MMX version' took 13038 cycles per page
copy_page function 'faster_copy' took 8437 cycles per page
copy_page function 'even_faster' took 8509 cycles per page
copy_page function 'no_prefetch' took 6178 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13471 cycles per page
copy_page function '2.4 non MMX' took 28421 cycles per page
copy_page function '2.4 MMX fallback' took 28413 cycles per page
copy_page function '2.4 MMX version' took 13463 cycles per page
copy_page function 'faster_copy' took 8195 cycles per page
copy_page function 'even_faster' took 8508 cycles per page
copy_page function 'no_prefetch' took 6038 cycles per page
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests
copy_page function 'warm up run' took 13408 cycles per page
copy_page function '2.4 non MMX' took 28326 cycles per page
copy_page function '2.4 MMX fallback' took 28357 cycles per page
copy_page function '2.4 MMX version' took 13410 cycles per page
copy_page function 'faster_copy' took 8202 cycles per page
copy_page function 'even_faster' took 8488 cycles per page
copy_page function 'no_prefetch' took 6174 cycles per page
-
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