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 14 12:40:19 2026 Auto Mode Machine = Linux oleg302-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-oleg302-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 1652 3001 394870 304761 64 8 2489 13361 725882 627470 64 16 3289 36056 821391 809014 64 32 4840 40331 1083249 799377 64 64 5119 35998 1526887 1124074 128 4 3169 9985 358677 418187 128 8 5369 12573 424133 329004 128 16 2720 17534 1048974 927549 128 32 8870 8817 44366 895074 128 64 7489 26181 722760 663782 128 128 8817 46346 1455701 1561553 256 4 3449 5468 63936 606700 256 8 3740 20418 977189 42447 256 16 8665 17492 1175022 962301 256 32 5201 19951 1195962 1118707 256 64 4728 15844 1334162 557554 256 128 11389 34202 898674 1153561 256 256 16670 102605 705107 2045979 512 4 8424 5091 99132 166888 512 8 8684 7544 100888 780390 512 16 6948 12210 734482 944860 512 32 9462 25682 1333173 1026126 512 64 9417 31002 523545 178587 512 128 13316 21781 1398278 599386 512 256 14614 24929 537299 157246 512 512 23480 41434 1689859 1296159 1024 4 3382 4798 357175 194124 1024 8 10679 8595 393679 437422 1024 16 10078 9427 1211622 867003 1024 32 14112 16863 967813 52998 1024 64 17646 19229 1075676 1067654 1024 128 11951 39685 1111877 684478 1024 256 11385 27456 236809 1359680 1024 512 22316 25108 382223 498267 2048 4 3760 4671 356979 200761 2048 8 13264 7921 337776 555450 2048 16 21971 19635 524454 146990 2048 32 30048 19663 762207 332855 2048 64 15283 24447 428622 889705 2048 128 36582 44043 404578 493736 2048 256 40076 77484 968774 536676 2048 512 48921 106694 1442279 1062216 4096 4 9233 9175 567145 438924 4096 8 7367 7763 308270 211122 4096 16 18953 15924 452699 507757 4096 32 28590 19170 515543 701740 4096 64 13401 15760 377963 624204 4096 128 53885 44464 751959 455665 4096 256 20874 30660 587490 775306 4096 512 38176 98161 1473932 341698 8192 4 6101 1385 286603 247588 8192 8 5230 16263 141022 121776 8192 16 13863 20232 437370 196008 8192 32 23520 29957 312361 337744 8192 64 11928 22564 698016 673458 8192 128 37419 30780 907408 604671 8192 256 29255 58982 703403 766397 8192 512 39448 54572 280135 539477 16384 4 4346 7983 552115 275347 16384 8 9793 9619 309857 247439 16384 16 11172 20103 330896 758268 16384 32 23587 20250 733784 270233 16384 64 33320 22993 709327 585081 16384 128 22186 27514 657830 591889 16384 256 57776 69364 1398306 1320872 16384 512 60799 70578 1346363 596260 32768 4 7890 7675 147853 253453 32768 8 8246 10427 237749 285652 32768 16 12328 20511 556663 385035 32768 32 15746 19903 763181 424236 32768 64