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7-Zip 4.58 alpha 2

  1. 2007-12-31 08:53:38 UTC
    7-Zip 4.58 alpha 2 was released.

    7-Zip for 32-bit Windows:
    http://www.7-zip.org/alpha/7z458a2.exe

    7-Zip for 64-bit Windows x64:
    http://www.7-zip.org/alpha/7z458a2-x64.msi

    What's new:
    - Small changes in Deflate and LZMA compression.
    - Some speed optimizations.
    - New localizations: Punjabi (Indian), Pashto.

    You can post some benchmark results here for 7-Zip 4.57 / 4.58 alpha 2. Just call:
    7z b
    Write also some information about your CPU: CPU Type/Frequency.

    Check also 7z/LZMA compression ratio for your files. 7-Zip 4.58 alpha 2 can provide slightly better compression ratio for some files.
  2. 2007-12-31 14:14:41 UTC
    Igor, Can you add support multivolume rar files?

    http://sourceforge.net/forum/forum.php?thread_id=1897862&forum_id=45797

    Thank you.
  3. 2007-12-31 17:18:00 UTC
    strange thing you ask, because i just did that and got no errors.
    i compressed a big file to multivolume (8 volumes, each 100 MB) RAR archive and unsed 7-zip 4.57
    for decompression. It worked flawlessly. Although while 7-Zip's decompresseion it always showed name of first file in the window, but really it already was at work at the following archive parts.

    while testing:
    http://666kb.com/i/auug3l8pzpknhs9o8.png

    testing result message:
    http://666kb.com/i/auug43vjxcfku7mrc.png
  4. 2007-12-31 18:40:02 UTC
    AM2 X2-4600+ (stock speed), 2 GB DDR2-800 dualchannel RAM, OS=XP-x64
    ---

    C:\temp\457>7z b -mmt4

    7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

    RAM size: 2047 MB, # CPU hardware threads: 2
    RAM usage: 850 MB, # Benchmark threads: 4

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 3697 194 1849 3597 | 44484 200 2295 4579
    23: 3631 196 1888 3699 | 43927 200 2297 4583
    24: 3496 199 1887 3759 | 43593 200 2304 4609
    25: 3362 198 1942 3838 | 42884 200 2302 4594
    ----------------------------------------------------------------
    Avr: 197 1892 3723 200 2299 4591
    Tot: 198 2096 4157

    C:\temp\457>cd "c:\Program Files\7-Zip"

    C:\Program Files\7-Zip>7z b -mmt4

    7-Zip [64] 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

    RAM size: 2047 MB, # CPU hardware threads: 2
    RAM usage: 850 MB, # Benchmark threads: 4

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 4260 197 2105 4144 | 48538 200 2501 4996
    23: 4348 200 2220 4430 | 47676 199 2496 4975
    24: 4041 198 2199 4345 | 47203 200 2498 4991
    25: 3909 198 2253 4463 | 46432 199 2498 4974
    ----------------------------------------------------------------
    Avr: 198 2194 4345 199 2498 4984
    Tot: 199 2346 4665

    C:\temp\458a2>7z b -mmt4

    7-Zip 4.58 alpha 1 Copyright (c) 1999-2007 Igor Pavlov 2007-12-24

    RAM size: 2047 MB, # CPU hardware threads: 2
    RAM usage: 850 MB, # Benchmark threads: 4

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22:


    ERROR: Can't allocate required memory!

    C:\temp\458a2>cd "c:\Program Files\7-Zip"

    C:\Program Files\7-Zip>7z.exe b -mmt4

    7-Zip [64] 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 2047 MB, # CPU hardware threads: 2
    RAM usage: 850 MB, # Benchmark threads: 4

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 4475 199 2185 4353 | 48149 200 2481 4956
    23: 4278 199 2192 4359 | 47554 199 2487 4962
    24: 4119 199 2228 4429 | 47101 200 2490 4980
    25: 3964 199 2269 4526 | 46608 199 2503 4993
    ----------------------------------------------------------------
    Avr: 199 2219 4417 200 2490 4973
    Tot: 199 2354 4695


    ---
    * 458a2 32BIT did'nt work on XP x64, but 458a1 did.

    * LZMA ULTRA (2 threads) compresses at about double speed than ZIP ULTRA DEFLATE64KB (4 threads) ;-)

    * compressed size of decompressed crysis demo objects.pak (for comparison):
    441,947,348 Objects.pak
    315,929,549 objects-4.57-LZMA-ULTRA-64MB-ws192-lc4-4GB.7z
    411,558,674 objects-4.57-ZIP-ULTRA-64KB-ws192.zip
    315,828,269 objects-4.58a2-LZMA-ULTRA-64MB-ws192-lc4-4GB.7z
    411,342,043 objects-4.58a2-ZIP-ULTRA-64KB-ws192.zip
  5. 2007-12-31 18:52:55 UTC
    AMD K7 XP-3200+, OS=W2K

    new version did not work here, but alpha1 did:
    ---

    H:\tmp\458a2>7z.exe b -mmt2

    7-Zip 4.58 alpha 1 Copyright (c) 1999-2007 Igor Pavlov 2007-12-24

    RAM size: 1023 MB, # CPU hardware threads: 1
    RAM usage: 425 MB, # Benchmark threads: 2

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22:


    ERROR: Can't allocate required memory!

    H:\tmp\458a2>cd ..\458a1

    H:\tmp\458a1>7z.exe b -mmt2

    7-Zip 4.58 alpha 1 Copyright (c) 1999-2007 Igor Pavlov 2007-12-24

    RAM size: 1023 MB, # CPU hardware threads: 1
    RAM usage: 425 MB, # Benchmark threads: 2

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 1479 98 1463 1439 | 17960 99 1864 1850
    23: 1397 97 1466 1424 | 17776 99 1877 1855
    24: 1312 99 1423 1411 | 17514 100 1858 1852
    25: 1229 99 1422 1403 | 17365 99 1876 1860
    ----------------------------------------------------------------
    Avr: 98 1444 1419 99 1869 1854
    Tot: 99 1656 1637
  6. 2007-12-31 22:31:49 UTC
    There were incorrect files in 7z458a2.exe.
    Just redownload it again:
    http://www.7-zip.org/alpha/7z458a2.exe
  7. 2008-01-01 09:13:00 UTC
    AMD K7 Barton XP-3200+ (2,2 GHZ), Nforce2 Ultra400, 2*512MB DDR1-400 Dualchannel, OS=W2K
    ---

    C:\Programme\7-Zip>start /B /HIGH 7z b -mmt2

    7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

    RAM size: 1023 MB, # CPU hardware threads: 1
    RAM usage: 425 MB, # Benchmark threads: 2

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 1487 99 1455 1446 | 18513 99 1926 1906
    23: 1405 99 1443 1431 | 18081 99 1898 1887
    24: 1314 99 1425 1412 | 17691 98 1906 1871
    25: 1223 99 1417 1397 | 17632 99 1905 1889
    ----------------------------------------------------------------
    Avr: 99 1435 1422 99 1909 1888
    Tot: 99 1672 1655


    H:\tmp\458a2>start /B /HIGH 7z b -mmt2

    7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 1023 MB, # CPU hardware threads: 1
    RAM usage: 425 MB, # Benchmark threads: 2

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 1575 99 1541 1532 | 18474 100 1910 1902
    23: 1467 98 1525 1495 | 18151 99 1913 1895
    24: 1385 99 1503 1489 | 17691 98 1909 1871
    25: 1289 99 1489 1472 | 17707 99 1910 1897
    ----------------------------------------------------------------
    Avr: 99 1514 1497 99 1911 1891
    Tot: 99 1712 1694
  8. 2008-01-01 16:51:42 UTC
    AMD Athlon 64 (Orleans-512), 2000 MHz (10 x 200)
    nVIDIA nForce 560
    Dual DDR2-800 (5-5-5-18 CR1)
    Windows XP SP2 Professional

    ===================================================================
    7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

    RAM size: 2046 MB, # CPU hardware threads: 1
    RAM usage: 425 MB, # Benchmark threads: 2

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 1664 99 1639 1618 | 18285 100 1887 1883
    23: 1586 99 1631 1616 | 18083 100 1895 1887
    24: 1539 99 1679 1654 | 17964 99 1909 1900
    25: 1479 99 1705 1689 | 17732 100 1908 1900
    ----------------------------------------------------------------
    Avr: 99 1663 1644 100 1900 1892
    Tot: 99 1781 1768

    ===================================================================
    7-Zip 4.58 alpha 1 Copyright (c) 1999-2007 Igor Pavlov 2007-12-24

    RAM size: 2046 MB, # CPU hardware threads: 1
    RAM usage: 425 MB, # Benchmark threads: 2

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 1633 99 1608 1588 | 17926 100 1850 1846
    23: 1591 98 1656 1621 | 17744 100 1856 1852
    24: 1534 98 1676 1649 | 17516 100 1861 1852
    25: 1476 99 1707 1685 | 17317 100 1860 1855
    ----------------------------------------------------------------
    Avr: 98 1662 1636 100 1857 1851
    Tot: 99 1759 1744

    ===================================================================
    7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 2046 MB, # CPU hardware threads: 1
    RAM usage: 425 MB, # Benchmark threads: 2

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 1751 99 1715 1703 | 18471 100 1906 1902
    23: 1704 98 1765 1736 | 18254 100 1913 1905
    24: 1660 99 1805 1785 | 18056 99 1922 1909
    25: 1575 99 1814 1798 | 17806 99 1918 1908
    ----------------------------------------------------------------
    Avr: 99 1775 1756 100 1915 1906
    Tot: 99 1845 1831
  9. 2008-01-01 18:54:41 UTC
    Hello everyone,

    Athlon XP 1700+ (1466MHz)
    7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 511 MB, # CPU hardware threads: 1
    RAM usage: 419 MB, # Benchmark threads: 1

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 677 97 678 658 | 10599 95 1154 1091
    23: 589 93 642 600 | 10614 95 1165 1108
    24: 525 90 625 565 | 10720 98 1152 1133
    25: 520 96 616 594 | 10436 98 1144 1118
    ----------------------------------------------------------------
    Avr: 94 640 604 96 1154 1113
    Tot: 95 897 858


    Best regards!
  10. 2008-01-02 04:59:47 UTC
    7-Zip [64] 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 2046 MB, # CPU hardware threads: 4
    RAM usage: 850 MB, # Benchmark threads: 4

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 8603 344 2435 8369 | 109220 389 2889 11242
    23: 8398 329 2604 8557 | 107647 389 2889 11232
    24: 8236 348 2541 8855 | 102352 376 2877 10822
    25: 8032 354 2592 9170 | 103516 387 2869 11089
    ----------------------------------------------------------------
    Avr: 344 2543 8738 385 2881 11097
    Tot: 364 2712 9917

    7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 2046 MB, # CPU hardware threads: 4
    RAM usage: 850 MB, # Benchmark threads: 4

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 8603 342 2447 8369 | 103619 386 2765 10665
    23: 8082 334 2467 8234 | 102985 388 2768 10746
    24: 7867 339 2497 8459 | 99957 385 2742 10569
    25: 7708 354 2483 8801 | 96778 381 2721 10367
    ----------------------------------------------------------------
    Avr: 342 2473 8466 385 2749 10587
    Tot: 364 2611 9526

    configuration is the same as here: http://sourceforge.net/forum/message.php?msg_id=4695063
  11. 2008-01-02 16:33:55 UTC
    Athlon X2 6000+, 6GB DDR2, XP64 SP2


    --- 4.57 x64 ----------------------------------------------------

    C:\Program Files\7-Zip>7z.exe b -mmt4

    7-Zip [64] 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

    RAM size: 6143 MB, # CPU hardware threads: 2
    RAM usage: 850 MB, # Benchmark threads: 4

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 5070 196 2514 4932 | 58591 198 3045 6031
    23: 4847 196 2521 4939 | 58174 199 3049 6070
    24: 4616 195 2552 4964 | 57370 199 3041 6066
    25: 4499 197 2604 5137 | 56155 198 3035 6015
    ----------------------------------------------------------------
    Avr: 196 2548 4993 199 3042 6045
    Tot: 197 2795 5519


    --- 4.58 A2 x86 ----------------------------------------------------

    G:\Programs\7z458a2>7z.exe b -mmt4

    7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 6143 MB, # CPU hardware threads: 2
    RAM usage: 850 MB, # Benchmark threads: 4

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 4713 195 2354 4585 | 54201 198 2815 5579
    23: 4573 198 2350 4660 | 53736 199 2823 5607
    24: 4296 198 2333 4619 | 53298 199 2832 5635
    25: 4076 198 2347 4654 | 52419 199 2828 5615
    ----------------------------------------------------------------
    Avr: 197 2346 4629 199 2824 5609
    Tot: 198 2585 5119


    --- 4.58 A2 x64 ----------------------------------------------------

    G:\Programs\7z458a2-x64\product>7z.exe b -mmt4

    7-Zip [64] 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 6143 MB, # CPU hardware threads: 2
    RAM usage: 850 MB, # Benchmark threads: 4

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 5073 199 2478 4935 | 58398 199 3025 6011
    23: 5055 198 2600 5151 | 57644 199 3025 6015
    24: 4895 198 2660 5264 | 56746 198 3024 6000
    25: 4659 197 2701 5319 | 56155 199 3021 6015
    ----------------------------------------------------------------
    Avr: 198 2610 5167 199 3024 6010
    Tot: 198 2817 5589
  12. 2008-01-02 18:51:02 UTC
    Intel P4 (HT) 3000 MHz
    Dual DDR2-800
    Windows XP SP2 Professional
    =================================================================
    7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

    RAM size: 2047 MB, # CPU hardware threads: 2
    RAM usage: 425 MB, # Benchmark threads: 2

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 1495 149 977 1455 | 13273 147 932 1367
    23: 1467 147 1019 1495 | 13064 144 944 1364
    24: 1438 149 1037 1546 | 12963 147 930 1371
    25: 1248 141 1008 1425 | 14850 174 915 1591
    ----------------------------------------------------------------
    Avr: 146 1010 1480 153 930 1423
    Tot: 150 970 1452

    =================================================================
    7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 2047 MB, # CPU hardware threads: 2
    RAM usage: 425 MB, # Benchmark threads: 2

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 1584 154 999 1541 | 13253 145 939 1365
    23: 1558 151 1049 1588 | 13192 144 955 1377
    24: 1532 152 1085 1647 | 13028 143 963 1377
    25: 1499 153 1117 1712 | 12917 143 967 1384
    ----------------------------------------------------------------
    Avr: 153 1063 1622 144 956 1376
    Tot: 148 1009 1499
  13. 2008-01-03 13:54:09 UTC
    definitely improved over 4.58a1

    Intel P35, Core2Duo 3550MHz, 2GB DDR2-1066@1066MHz


    7-Zip (A) 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

    RAM size: 2047 MB, # CPU hardware threads: 2
    RAM usage: 425 MB, # Benchmark threads: 2

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 5437 157 3363 5289 | 61150 194 3248 6298
    23: 5336 164 3323 5437 | 60189 194 3245 6284
    24: 5288 165 3450 5686 | 59486 194 3246 6291
    25: 5176 173 3422 5909 | 58368 194 3224 6254
    ----------------------------------------------------------------
    Avr: 165 3389 5580 194 3241 6282
    Tot: 179 3315 5931

    ---
    7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 2047 MB, # CPU hardware threads: 2
    RAM usage: 425 MB, # Benchmark threads: 2

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 5667 160 3453 5513 | 65119 200 3354 6707
    23: 5682 162 3565 5789 | 63835 200 3332 6664
    24: 5539 169 3515 5956 | 63043 200 3333 6667
    25: 5429 173 3586 6199 | 62103 200 3327 6654
    ----------------------------------------------------------------
    Avr: 166 3529 5864 200 3336 6673
    Tot: 183 3433 6269
  14. 2008-01-03 14:06:45 UTC
    i forgot to add that C2D is E6750 (4MB L2)
  15. 2008-01-06 09:45:04 UTC
    AMD K6-2 CXT @4.5*112=504 MHZ, 2x128 MB SDRAM PC100 CL2 @ 112 MHZ - 4x interleave, VIA MVP3 AGP chipset with 1 MB L2 Cache, OS=W2K
    ---

    C:\Programme\7-Zip>start /B /HIGH 7z b

    C:\Programme\7-Zip>
    7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 253 MB, # CPU hardware threads: 1
    RAM usage: 211 MB, # Benchmark threads: 1

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 275 100 268 268 | 4039 100 416 416
    23: 269 100 274 274 | 3997 100 417 417
    24: 261 100 281 281 | 3942 100 417 416
    ----------------------------------------------------------------
    Avr: 100 274 274 100 416 416
    Tot: 100 345 345

    C:\Programme\7-Zip>a:

    A:\>start /B /HIGH 7z b

    A:\>
    7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

    RAM size: 253 MB, # CPU hardware threads: 1
    RAM usage: 211 MB, # Benchmark threads: 1

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 266 100 259 259 | 4226 100 435 435
    23: 258 100 263 263 | 4199 100 438 438
    24: 251 100 270 270 | 4130 100 436 436
    ----------------------------------------------------------------
    Avr: 100 264 264 100 436 436
    Tot: 100 350 350

    A:\>
  16. 2008-01-07 07:24:03 UTC
    CPU: Pentium 4-M (Northwood C1) 1.80 GHz
    RAM: DDR1-266 tRAS6-RP3-RtC3-CL2.5 512MB single-channel mode
    OS: Windows 2000 Professional SP4

    7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

    RAM size: 510 MB, # CPU hardware threads: 1
    RAM usage: 419 MB, # Benchmark threads: 1

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 776 100 755 755 | 6991 99 726 720
    23: 755 100 772 769 | 6973 100 728 728
    24: 722 100 778 777 | 6860 100 726 725
    25: 663 95 794 757 | 6071 90 725 650
    ----------------------------------------------------------------
    Avr: 99 775 765 97 726 706
    Tot: 98 751 735

    7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 510 MB, # CPU hardware threads: 1
    RAM usage: 419 MB, # Benchmark threads: 1

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 795 98 789 774 | 7348 100 757 756
    23: 799 100 818 814 | 7238 99 760 755
    24: 768 99 830 825 | 7166 100 759 757
    25: 717 98 833 819 | 7060 99 761 756
    ----------------------------------------------------------------
    Avr: 99 817 808 100 760 756
    Tot: 99 788 782

    icc optimized 7z.dll:

    7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

    RAM size: 510 MB, # CPU hardware threads: 1
    RAM usage: 419 MB, # Benchmark threads: 1

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 851 100 831 828 | 8327 100 857 857
    23: 841 100 859 857 | 8198 99 863 855
    24: 813 100 876 875 | 8147 100 864 861
    25: 766 99 881 874 | 8035 99 868 860
    ----------------------------------------------------------------
    Avr: 100 862 858 99 863 859
    Tot: 100 862 858
  17. 2008-01-07 09:15:58 UTC
    Try also -mmt2. It can give some gain for single-thread CPUs.
  18. 2008-01-07 13:15:10 UTC
    os: Microsoft Windows XP Professional - Service Pack 2 (5.1.2600)
    cpu: AMD Athlon(TM) XP 2400+ at 2100MHz (48% Load)
    ram: 1286/3071.5MB (41.86%) [||||------]

    Y:\arr>7z b -mmt1

    7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 3071 MB, # CPU hardware threads: 1
    RAM usage: 419 MB, # Benchmark threads: 1

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 758 87 846 737 | 14056 91 1596 1447
    23: 764 92 845 779 | 14280 92 1622 1491
    24: 708 93 823 762 | 13887 93 1585 1468
    25: 651 91 819 744 | 14729 97 1623 1578
    ----------------------------------------------------------------
    Avr: 91 833 755 93 1607 1496
    Tot: 92 1220 1126

    Y:\arr>7z b -mmt2

    7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 3071 MB, # CPU hardware threads: 1
    RAM usage: 425 MB, # Benchmark threads: 2

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 899 86 1019 874 | 14278 91 1610 1470
    23: 860 91 959 876 | 14301 93 1611 1493
    24: 809 91 954 870 | 13832 92 1583 1462
    25: 763 93 940 872 | 14007 93 1608 1500
    ----------------------------------------------------------------
    Avr: 90 968 873 92 1603 1481
    Tot: 91 1286 1177

    Y:\arr>
  19. 2008-01-08 06:38:59 UTC

    7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

    RAM size: 510 MB, # CPU hardware threads: 1
    RAM usage: 425 MB, # Benchmark threads: 2

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 798 100 777 777 | 7037 100 724 724
    23: 638 99 654 650 | 2533 100 264 264
    24: 530 98 579 570 | 3038 100 321 321
    25: 386 99 445 441 | 3011 99 325 322
    ----------------------------------------------------------------
    Avr: 99 614 609 100 409 408
    Tot: 100 511 509

    7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 510 MB, # CPU hardware threads: 1
    RAM usage: 425 MB, # Benchmark threads: 2

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 809 100 789 787 | 7280 100 751 749
    23: 429 99 442 437 | 2924 100 305 305
    24: 453 100 489 487 | 3508 100 372 371
    25: 360 99 414 411 | 3366 100 361 360
    ----------------------------------------------------------------
    Avr: 99 533 531 100 447 446
    Tot: 100 490 488

    icc optimized:
    7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

    RAM size: 510 MB, # CPU hardware threads: 1
    RAM usage: 425 MB, # Benchmark threads: 2

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 364 99 357 354 | 8283 100 853 853
    23: 838 100 854 854 | 5186 100 543 541
    24: 340 99 371 366 | 7309 99 778 773
    25: 424 100 486 484 | 3327 99 360 356
    ----------------------------------------------------------------
    Avr: 99 517 515 99 633 631
    Tot: 99 575 573

    ahh, it's hot... cpu is in throttling... (((
  20. 2008-01-15 06:02:02 UTC
    Vista Ultimate x64, SP1 Eval
    Q6600 @ 3.07GHz (341x9)

    C:\Program Files\7-Zip>7z b

    7-Zip [64] 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

    RAM size: 4093 MB, # CPU hardware threads: 4
    RAM usage: 850 MB, # Benchmark threads: 4

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 6921 334 2018 6733 | 106066 372 2934 10917
    23: 6698 357 1912 6825 | 106452 375 2958 11108
    24: 6257 361 1864 6728 | 104897 376 2949 11091
    25: 5710 357 1828 6520 | 101857 374 2915 10912
    ----------------------------------------------------------------
    Avr: 352 1905 6701 374 2939 11007
    Tot: 363 2422 8854

    C:\Program Files\7-Zip>7z b -mmt8

    7-Zip [64] 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

    RAM size: 4093 MB, # CPU hardware threads: 4
    RAM usage: 1701 MB, # Benchmark threads: 8

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 7206 376 1862 7010 | 110911 388 2938 11412
    23: 6962 379 1873 7094 | 108572 385 2944 11326
    24: 6120 366 1800 6581 | 104398 378 2923 11037
    25: 5829 375 1775 6656 | 103939 384 2901 11134
    ----------------------------------------------------------------
    Avr: 374 1828 6835 384 2927 11227
    Tot: 379 2377 9031

    C:\Program Files\7-Zip>7z b

    7-Zip [64] 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 4093 MB, # CPU hardware threads: 4
    RAM usage: 850 MB, # Benchmark threads: 4

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 7015 350 1950 6824 | 109898 381 2972 11312
    23: 6573 350 1915 6697 | 107647 379 2967 11232
    24: 6351 368 1856 6829 | 102864 368 2953 10876
    25: 5766 354 1858 6583 | 103516 376 2947 11089
    ----------------------------------------------------------------
    Avr: 355 1895 6733 376 2960 11128
    Tot: 366 2427 8930

    C:\Program Files\7-Zip>7z b -mmt8

    7-Zip [64] 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 4093 MB, # CPU hardware threads: 4
    RAM usage: 1701 MB, # Benchmark threads: 8

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 7356 381 1879 7156 | 111920 388 2966 11515
    23: 6917 381 1851 7048 | 109491 386 2957 11422
    24: 6303 380 1785 6777 | 107048 385 2943 11317
    25: 5746 370 1772 6560 | 105881 386 2937 11342
    ----------------------------------------------------------------
    Avr: 378 1822 6885 386 2951 11399
    Tot: 382 2386 9142
  21. 2008-01-28 04:48:52 UTC
    System is as follows
    MB: SM X7DAE
    CPU: 2x5130 OCed to 2300mhz 1532FSB
    RAM: 4x 512mb DDR2 667
    HD:4x7200.10 320GB raid 0
    OS Vista Ultimate x32

    C:\Users\Jim\Desktop\7z458a2>7z b -mmt6

    7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 2046 MB, # CPU hardware threads: 4
    RAM usage: 1275 MB, # Benchmark threads: 6

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 7341 369 1935 7141 | 81915 396 2130 8430
    23: 7152 378 1925 7287 | 80270 393 2131 8375
    24: 6845 379 1940 7360 | 75680 378 2117 8001
    25: 6604 383 1970 7540 | 74873 381 2103 8021
    ----------------------------------------------------------------
    Avr: 377 1942 7332 387 2120 8207
    Tot: 382 2031 7769

    C:\Users\Jim\Desktop\7z458a2>

    C:\Users\Jim\Desktop\7z458a2>7z b -mmt4

    7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

    RAM size: 2046 MB, # CPU hardware threads: 4
    RAM usage: 850 MB, # Benchmark threads: 4

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 6351 322 1921 6178 | 82424 396 2142 8484
    23: 6154 313 2000 6270 | 80721 394 2135 8423
    24: 6112 335 1961 6571 | 78963 393 2123 8349
    25: 5936 344 1971 6778 | 77708 393 2117 8325
    ----------------------------------------------------------------
    Avr: 328 1963 6449 394 2129 8395
    Tot: 361 2046 7422

    C:\Users\Jim\Desktop\7z458a2>

    C:\Program Files\7-Zip>7z b -mmt4

    7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

    RAM size: 2046 MB, # CPU hardware threads: 4
    RAM usage: 850 MB, # Benchmark threads: 4

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 6131 313 1907 5964 | 82786 394 2160 8521
    23: 5914 319 1888 6025 | 81429 396 2146 8497
    24: 5777 332 1869 6211 | 80175 394 2150 8477
    25: 5612 340 1885 6407 | 78670 395 2132 8428
    ----------------------------------------------------------------
    Avr: 326 1887 6152 395 2147 8481
    Tot: 360 2017 7316

    C:\Program Files\7-Zip>
  22. 2008-06-05 22:03:12 UTC
    Computer has a Quad core 2.66Ghz CPU overclocked at 3.01Ghz
    Actual RAM is 4 gigs dual channel but limited by Windows XP SP3 32 bits.

    7-Zip 4.58 beta Copyright (c) 1999-2008 Igor Pavlov 2008-05-05

    RAM size: 2495 MB, # CPU hardware threads: 4
    RAM usage: 850 MB, # Benchmark threads: 4

    Dict Compressing | Decompressing
    Speed Usage R/U Rating | Speed Usage R/U Rating
    KB/s % MIPS MIPS | KB/s % MIPS MIPS

    22: 7098 307 2252 6905 | 132125 384 3105 11921
    23: 6996 326 2184 7128 | 116009 352 3016 10616
    24: 6770 339 2145 7279 | 119621 366 3033 11098
    25: 6555 341 2193 7485 | 123004 385 3005 11567
    ----------------------------------------------------------------
    Avr: 328 2193 7199 372 3040 11300
    Tot: 350 2617 9250
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