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 16:41:37 2026 Auto Mode Machine = Linux oleg352-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-oleg352-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 1231 5393 592827 571375 64 8 2762 9062 771797 344233 64 16 5198 24159 831569 88161 64 32 6530 59312 998622 889431 64 64 4876 53284 1163036 1562436 128 4 6018 8683 262810 495814 128 8 4816 15136 457376 612303 128 16 4657 29284 304037 176788 128 32 4988 32088 621518 633247 128 64 11143 25692 1254941 1278855 128 128 4762 20228 1618028 2035099 256 4 4558 5045 247075 87106 256 8 8634 15410 826078 778183 256 16 10134 38409 1076103 421768 256 32 9670 29256 1292410 842278 256 64 19541 69247 714967 1071806 256 128 11315 108978 1334162 1376935 256 256 25574 47788 1405778 1632308 512 4 5405 6087 362640 406350 512 8 8260 15618 291231 491436 512 16 16567 39149 724081 54695 512 32 14113 26268 1258188 948197 512 64 21150 54416 1254513 1082507 512 128 31033 27164 777002 1276891 512 256 10175 72051 1446306 179573 512 512 10740 46652 483035 1795846 1024 4 4349 5608 122882 545544 1024 8 7939 19942 323226 174956 1024 16 8847 12373 1007781 138960 1024 32 19197 23267 267153 830457 1024 64 27300 65758 1239598 307138 1024 128 27484 44979 807657 584444 1024 256 34585 45501 310783 150522 1024 512 43250 50887 1460472 964336 2048 4 5614 6448 190689 324763 2048 8 11848 19682 525931 494817 2048 16 18313 25545 218224 320941 2048 32 21349 28778 421389 586151 2048 64 31743 28821 422259 496361 2048 128 27944 46239 503194 1225591 2048 256 33793 63435 728837 556385 2048 512 50216 39141 473410 786421 4096 4 5873 7957 206765 246820 4096 8 11183 11387 429531 350382 4096 16 15418 18984 337563 299432 4096 32 17352 23714 467202 840716 4096 64 1708 39383 627052 687117 4096 128 26556 44252 694366 878190 4096 256 32049 37995 419883 1349154 4096 512 35696 45398 576664 506993 8192 4 5612 5744 203836 175147 8192 8 10238 10986 182844 287570 8192 16 13633 17352 359694 792798 8192 32 19183 26734 727070 671694 8192 64 25256 32944 728704 485651 8192 128 28673 36890 1073513 469191 8192 256 26911 36676 531261 588041 8192 512 43188 64235 912347 859319 16384 4 6100 6470 533818 280490 16384 8 9941 13122 274402 363476 16384 16 15241 17163 349330 355927 16384 32 16824 25233 658864 373680 16384 64 28774 29477 556465 344036 16384 128 23311 46751 751280 327103 16384 256 32493 42572 425392 711884 16384 512 38205 44452 628943 570651 32768 4 4874 5838 333221 251417 32768 8 10069 10123 452295 327614 32768 16