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: Sat Sep 12 21:47:39 2026 Auto Mode Machine = Linux oleg457-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-oleg457-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 4236 7441 627470 528618 64 8 5184 23705 621657 831569 64 16 4674 29238 955947 1679761 64 32 7667 52287 532815 1599680 64 64 6631 96116 1599680 1638743 128 4 6364 12613 589446 256531 128 8 12133 21969 112674 618653 128 16 7006 51988 1048974 620799 128 32 12587 40933 1332828 1152564 128 64 19789 63740 1332828 1240443 128 128 19323 104412 1074159 1579934 256 4 9842 17004 624339 764334 256 8 14126 25426 805021 344500 256 16 24648 48066 980760 1103757 256 32 21614 54191 1202660 930608 256 64 23123 107023 944525 555535 256 128 30571 119069 991629 1581810 256 256 27446 125616 1707589 1924938 512 4 9603 19078 408670 496550 512 8 20454 25622 705294 499553 512 16 21103 55344 861818 895230 512 32 31583 50946 1145443 892254 512 64 34728 60192 613075 1069035 512 128 31043 71638 1537424 1387437 512 256 45742 99398 1579257 1302447 512 512 31052 85735 1867692 1764853 1024 4 13503 15351 680465 560495 1024 8 19317 27158 238864 335078 1024 16 18712 51072 642881 461040 1024 32 26441 49624 564176 620229 1024 64 44195 89911 1097669 1279861 1024 128 47021 86319 1448162 811319 1024 256 48936 82707 991266 584523 1024 512 39645 80086 1724328 1620249 2048 4 13680 13363 463348 329839 2048 8 19752 32384 680832 747418 2048 16 26878 51966 639998 379400 2048 32 45192 51872 762749 670156 2048 64 44421 49809 1030115 1219848 2048 128 54026 101170 789530 1353639 2048 256 50100 102501 1211077 1363307 2048 512 51706 116774 964207 1399056 4096 4 16544 15713 385684 432384 4096 8 27036 27845 761761 682314 4096 16 23899 38625 518671 1052120 4096 32 43747 57920 909622 908372 4096 64 61859 95569 1161288 761188 4096 128 73697 116695 806308 1077053 4096 256 60430 86468 1200817 1190994 4096 512 58121 80729 1904049 1460276 8192 4 16573 15991 364947 427334 8192 8 26498 25526 952431 720680 8192 16 38271 42339 710002 918174 8192 32 47356 55761 741297 818872 8192 64 52922 84184 1315114 1117760 8192 128 53226 78755 1083021 1161673 8192 256 85093 107907 1427385 1370125 8192 512 74528 137489 880684 1521567 16384 4 13646 16388 489072 371284 16384 8 24716 26909 486892 764043 16384 16 28868 40685 820885 540154 16384 32 5343 56399 803137 701549 16384 64 53080 66413 830790 755584 16384 128 43462 70750 547575 893437 16384 256 64937 103890 1036824 1039521 16384 512 64419 104355 1104871 1091759 32768 4 13791 14479 483482 442841 32768 8 19521 25677 726322 601810 32768 16 28316 36271 876782 812355 32768 32 38621 42629 526723 736212 32768 64 50125 62343 1049314 860209 32768 128 54978 57244 1444281 716145 32768 256 52398 67681 1315346 844838 32768 512 54767 102572 1123851 622422 65536 4 11116 13256 471397 359812 65536 8 20102 25281 624152 641435 65536 16 37395 47952 1128103 883054 65536 32 59603 72518 1250543 1136630 65536 64 60260 72632 1279175 1081877 65536 128 66679 84578 1233041 1069452 65536 256 63905 97521 1091305 683878 65536 512