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: Mon Sep 7 23:01:12 2026 Auto Mode Machine = Linux oleg103-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-oleg103-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 3768 8452 188798 555990 64 8 3900 19178 877797 686877 64 16 5991 37340 1017549 727850 64 32 2911 45101 763021 969761 64 64 5073 63992 1562436 1279447 128 4 7134 8696 587511 597981 128 8 9537 16976 876086 474349 128 16 13725 53442 1048974 809997 128 32 16032 76197 1220700 821147 128 64 13803 52008 2511022 1196221 128 128 8598 116462 1319723 1727352 256 4 3679 8313 588736 547044 256 8 10110 19335 873809 390763 256 16 17430 41244 1080434 954602 256 32 18439 40698 1266495 663292 256 64 20563 76784 1286217 434571 256 128 24589 37251 1213534 1479379 256 256 22059 147983 1755037 2065659 512 4 7444 13269 387296 312961 512 8 11763 16796 526111 345209 512 16 16270 32357 982467 526111 512 32 15946 20607 169817 430892 512 64 19033 83430 1251589 283353 512 128 18542 85721 1413929 777002 512 256 36358 67708 1700565 1182661 512 512 16405 34169 300818 572081 1024 4 6710 6474 668393 564770 1024 8 8061 10041 419479 263708 1024 16 11273 27863 651858 343630 1024 32 12201 14635 235510 335943 1024 64 30125 61709 497113 858340 1024 128 38599 49478 1537868 114185 1024 256 24538 33504 1530742 1159922 1024 512 31275 102400 1208894 431880 2048 4 6165 6187 272706 139660 2048 8 14998 17489 897045 813070 2048 16 19047 13648 1129688 148813 2048 32 17747 47715 355737 370610 2048 64 24380 40963 1469167 588682 2048 128 24278 46334 1463909 348535 2048 256 37391 63060 1037581 881579 2048 512 38103 75552 904984 422882 4096 4 8728 5426 383669 322900 4096 8 15343 20052 644120 263507 4096 16 12115 22845 842075 678595 4096 32 17275 24221 784798 619858 4096 64 30733 45667 809958 1255672 4096 128 24774 48806 173494 383635 4096 256 22522 34533 361644 645743 4096 512 48287 67987 1029671 837641 8192 4 6593 5928 324433 296532 8192 8 9776 12755 353619 369392 8192 16 11055 26534 853938 353466 8192 32 18781 34516 1532903 1585458 8192 64 36386 40812 609379 426157 8192 128 34437 58630 1037218 842877 8192 256 36642 73901 607859 386778 8192 512 35482 63753 1548237 526781 16384 4 9077 11884 346979 427089 16384 8 10911 11322 274388 164582 16384 16 24776 19040 686303 441344 16384 32 17461 20956 549062 634793 16384 64 16258 22702 296221 196951 16384 128 24039 43053 1236544 1043309 16384 256 53560 89689 861040 954108 16384 512 47984 78945 942100 742730 32768 4 6873 5677 380399 563933 32768 8 18110 14498 375694 288544 32768 16 31769 33031 1090449 1094897 32768 32 39510 26027 527443 631927 32768 64 48375 52238 916358 1181723 32768 128 39096 38212 422050 582447 32768 256 42024 64649 1659073 1129383 32768 512