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: Wed Sep 30 09:08:13 2026 Auto Mode Machine = Linux oleg602-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-oleg602-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 3100 8511 681644 138812 64 8 1633 16912 302018 653436 64 16 3029 17250 441646 801764 64 32 4190 51913 542506 913649 64 64 2161 24051 1143223 1452528 128 4 3659 4100 265540 576780 128 8 6565 14151 762811 786271 128 16 6760 28545 948860 821147 128 32 3978 53088 1240443 1015251 128 64 10031 41992 1291158 1306873 128 128 5403 81482 1377278 1802755 256 4 4296 7777 467290 273230 256 8 6263 10819 360581 400529 256 16 9399 20125 237721 615393 256 32 11572 23325 1122215 495312 256 64 12767 46537 1384034 773697 256 128 5321 68361 1260547 1036624 256 256 9631 100080 1319408 2034350 512 4 4796 4276 235966 463738 512 8 9047 7810 842214 479476 512 16 11472 15423 896725 863551 512 32 19450 44848 1138158 898225 512 64 13408 22261 994294 653961 512 128 11786 36500 737762 680055 512 256 19512 73936 549396 1528669 512 512 17150 51649 1316016 1778004 1024 4 9034 4143 550015 217040 1024 8 7459 11657 199110 727244 1024 16 19364 13220 753528 186617 1024 32 23961 25918 1137798 566632 1024 64 28385 51509 652650 698959 1024 128 18377 40081 673635 171607 1024 256 28310 53733 1430318 1084640 1024 512 30431 39124 515614 510709 2048 4 5475 7530 173914 401421 2048 8 8556 9447 951286 519411 2048 16 13680 15810 499275 447840 2048 32 21974 19427 597444 482911 2048 64 8966 28547 421223 358664 2048 128 34239 47855 529171 402833 2048 256 28573 45538 213734 259375 2048 512 20865 61795 1452276 422342 4096 4 8721 4339 260744 145583 4096 8 7100 11819 246894 208233 4096 16 17418 15518 527510 464976 4096 32 21334 13007 688522 612542 4096 64 34891 19738 521981 670596 4096 128 21222 37695 729357 670177 4096 256 21030 35834 947708 626024 4096 512 16621 38533 355957 621450 8192 4 4628 6925 431726 191500 8192 8 2578 13834 270722 298313 8192 16 16144 22416 353241 349128 8192 32 24340 14856 541688 674516 8192 64 35687 63469 1083294 879444 8192 128 22773 33213 850682 682271 8192 256 42390 44817 1137784 873542 8192 512 29944 56238 593875 697903 16384 4 9741 9839 467181 270836 16384 8 8159 7473 159210 124087 16384 16 7333 13872 598415 635280 16384 32 34637 29091 845145 411410 16384 64 29692 15008 263714 324563 16384 128 17376 31948 1144203 1165708 16384 256 22737 26184 426477 371089 16384 512 17234 23376 434818 353431 32768 4 6096 6070 248730 305717 32768 8 8696 9645 237219 299338 32768 16 11603 20319 499420 467579 32768 32 27996 28609 843076 783548 32768 64