Iozone: Performance Test of File I/O Version $Revision: 3.483 $ Compiled for 64 bit mode. Build: linux-AMD64 Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins Al Slater, Scott Rhine, Mike Wisner, Ken Goss Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR, Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner, Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone, Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root, Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer, Vangel Bojaxhi, Ben England, Vikentsi Lapa, Alexey Skidanov, Sudhir Kumar. Run began: Tue Apr 1 13:23:21 2025 Auto Mode Machine = Linux oleg145-client.virtnet 3.10.0-7.9-debug #1 SMP Sat Mar 26 23:2 Excel chart generation enabled Excel chart generation enabled Verify Mode. Pattern dbdbdbdb Performance measurements are invalid in this mode. Using maximum file size of 102400 kilobytes. Using Maximum Record Size 512 kB Command line used: iozone -a -M -R -V 0xab -g 100M -q 512k -i0 -i1 -f /mnt/lustre/d4.lustre-rsync-test/d0.iozone-oleg145-client.virtnet/iozone-file Output is in kBytes/sec Time Resolution = 0.000001 seconds. Processor cache size set to 1024 kBytes. Processor cache line size set to 32 bytes. File stride size set to 17 * record size. random random bkwd record stride kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 64 4 6396 19777 321554 376589 64 8 12615 19042 538156 367817 64 16 11126 36863 196828 771797 64 32 17515 75833 955947 673098 64 64 12903 114921 1143223 1279447 128 4 6868 16742 187664 109035 128 8 20012 31581 300464 499970 128 16 18860 24095 1196221 757430 128 32 20391 83019 1336145 955616 128 64 17421 100786 1332828 1387960 128 128 18946 101741 1663139 1406136 256 4 12258 17388 155619 48846 256 8 18352 27321 551540 593947 256 16 31380 49669 729045 1066483 256 32 34256 81425 1195962 387939 256 64 41781 88733 826078 653204 256 128 48393 112083 1479379 1514860 256 256 35574 131139 725106 1532153 512 4 17286 18411 326573 256759 512 8 27253 34578 500484 360569 512 16 35240 48632 1096322 884536 512 32 32793 67851 1077618 975328 512 64 36938 80848 1267097 1098566 512 128 60728 111379 1309596 1264113 512 256 62790 129751 1565443 1506154 512 512 72469 123526 1924603 1809465 1024 4 17887 17321 226554 255048 1024 8 25949 33103 353704 582857 1024 16 39601 54206 639626 895194 1024 32 54160 74455 986485 967813 1024 64 77806 79250 1454537 1333093 1024 128 76474 114313 1276817 1076755 1024 256 76917 144325 1313122 1117955 1024 512 87305 196396 1805514 1865101 2048 4 19130 19342 329320 343682 2048 8 29584 34210 402342 339190 2048 16 47748 60724 476720 666878 2048 32 63149 79490 1216910 787359 2048 64 86820 113993 866724 1224892 2048 128 82848 114720 1402711 1257897 2048 256 115088 151157 1117345 1275264 2048 512 104309 175538 1307685 1557613 4096 4 18713 19944 357446 308088 4096 8 34360 36821 484515 520337 4096 16 48126 60031 768199 905213 4096 32 74556 88713 890065 1033325 4096 64 88188 120131 1078473 1181412 4096 128 107829 134312 1435626 1142521 4096 256 95384 150301 1696139 1498095 4096 512 109273 125559 1044063 1329422 8192 4 18740 19830 305945 305613 8192 8 31471 34095 474347 528044 8192 16 46474 55962 684664 671038 8192 32 71378 76184 1001221 916631 8192 64 82540 109760 1069204 1050794 8192 128 87797 110110 1075765 1111073 8192 256 89352 123906 1181770 1231143 8192 512 115724 141173 1503918 1053921 16384 4 18948 19949 300519 306570 16384 8 32267 34178 528449 506038 16384 16 52834 55316 687883 674766 16384 32 68125 88134 799455 818548 16384 64 88680 102323 1092470 935801 16384 128 94106 110842 1353390 1395098 16384 256 99738 139732 1463897 1253460 16384 512 110761 135397 1259825 1448744 32768 4 19029 19397 279795 295465 32768 8 31335 32967 486163 495554 32768 16 46830 56395 625977 668296 32768 32 71871 79185 871489 892786 32768 64 82226 98935 1047275 990295 32768 128 93808 114248 1136828 1124274 32768 256 100469 125734 1134239 1235175 32768 512 102673 120767 1357089 1278302 65536 4 18993 20144 309008 334915 65536 8