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: Fri Oct 2 08:50:58 2026 Auto Mode Machine = Linux oleg609-client.virtnet 4.18.0rh8.10-debug #2 SMP Mon Jul 14 01 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-oleg609-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 3348 6812 359444 561808 64 8 2806 17837 771797 598110 64 16 4205 25951 913649 361380 64 32 3300 25215 1143223 863676 64 64 6634 18177 955947 1679761 128 4 5835 6027 699227 258508 128 8 5532 19268 346859 540217 128 16 8853 20043 1085013 666253 128 32 8043 24160 1206978 1032829 128 64 7802 50836 1319723 1526043 128 128 14220 87369 1243315 1911894 256 4 10482 12978 309185 365740 256 8 15066 14094 251473 701422 256 16 17464 20997 894929 879535 256 32 23660 54480 1260547 1089202 256 64 19294 73119 1137672 255239 256 128 20848 55982 425951 1384034 256 256 7742 35930 1683493 2148318 512 4 7911 7584 362089 160142 512 8 17126 20740 592604 357329 512 16 27519 28183 698640 250616 512 32 22420 53494 615359 911184 512 64 22862 49060 540545 354089 512 128 14558 41599 868089 1224470 512 256 12808 53850 1616100 1571169 512 512 35854 100646 335921 1524329 1024 4 7077 6425 355314 178489 1024 8 11028 9220 279096 215126 1024 16 23151 28224 499019 382802 1024 32 22622 40430 487853 102174 1024 64 11590 62393 1144163 957884 1024 128 16544 51644 241116 880512 1024 256 19973 38823 1219189 749583 1024 512 37271 63330 663642 556212 2048 4 5276 5177 212712 118100 2048 8 8919 21287 570956 598985 2048 16 21468 21818 566513 334202 2048 32 23455 50903 1308682 690964 2048 64 34551 33474 758238 548779 2048 128 17754 29397 1496033 562322 2048 256 19596 69702 581469 737472 2048 512 39679 67635 543398 450210 4096 4 4920 9177 331575 224673 4096 8 12356 16479 655149 368478 4096 16 25180 28777 298241 405704 4096 32 27406 29120 624863 572551 4096 64 10853 18776 1302412 1008871 4096 128 53290 26831 1008634 970186 4096 256 62234 36664 381166 737086 4096 512 20370 68079 675234 481379 8192 4 6211 4324 294865 354986 8192 8 13001 9805 195803 184636 8192 16 16912 18809 350281 224296 8192 32 16755 27216 487041 368276 8192 64 24023 20693 720106 708159 8192 128 27542 47348 665966 664074 8192 256 32624 47019 716951 790500 8192 512 31926 46994 816498 493732 16384 4 5862 7739 214857 190133 16384 8 13693 13446 251392 274806 16384 16 16298 14403 583496 436872 16384 32 26351 27045 363595 586274 16384 64 28683 28744 452894 632125 16384 128 17457 31648 591243 566371 16384 256 33414 35783 460976 408080 16384 512 27669 29747 907705 297587 32768 4 7330 6373 149763 162529 32768 8 12763 14439 779853 798090 32768 16 16298 29260 582791 686570 32768 32 25147 25955 852689 376933 32768 64