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: Fri Oct 2 09:09:48 2026 Auto Mode Machine = Linux oleg433-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-oleg433-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 1058 5009 36241 190001 64 8 2857 27645 645579 703068 64 16 6526 22345 983980 117435 64 32 5070 38949 1143223 901377 64 64 3249 54840 1143223 1768283 128 4 4944 3659 631014 474349 128 8 9020 11092 757430 601330 128 16 4045 5556 921183 789741 128 32 6142 18262 456986 450846 128 64 5116 56484 1009524 703810 128 128 14890 56071 1440082 2066432 256 4 4036 4097 550409 356985 256 8 13308 5915 580461 130074 256 16 10414 17638 633548 744204 256 32 18280 32837 329894 910872 256 64 10280 35135 1058076 585845 256 128 16666 54008 1471270 186581 256 256 25351 88367 773697 2061693 512 4 3733 5065 518740 57226 512 8 7260 8049 748563 198220 512 16 6520 15052 977103 531712 512 32 10350 21876 786391 674714 512 64 11424 45956 1219602 1028091 512 128 11470 72974 414988 516122 512 256 25326 82755 1537424 564413 512 512 14689 53647 189075 1821745 1024 4 5161 4365 587160 121413 1024 8 10140 9636 852547 710639 1024 16 10780 11977 162228 605965 1024 32 19811 13793 1170352 509921 1024 64 29991 22081 881234 491369 1024 128 12884 70103 679927 354200 1024 256 35268 84218 1486247 1514549 1024 512 23382 51824 1523683 1678504 2048 4 7899 4760 314248 162682 2048 8 7622 8416 603403 492547 2048 16 14721 18797 387007 343613 2048 32 16944 29309 670574 220856 2048 64 26412 47781 253871 1106978 2048 128 23787 58735 663427 467484 2048 256 17158 36614 1031228 270261 2048 512 28160 72649 500001 1437211 4096 4 5675 1193 143217 146526 4096 8 9594 10812 416817 253716 4096 16 11117 14877 347413 278542 4096 32 13610 23453 448679 268608 4096 64 28093 30013 891404 367650 4096 128 25127 30973 653157 761761 4096 256 29849 37133 540880 488830 4096 512 30122 57347 859990 551949 8192 4 7456 5721 389872 208337 8192 8 10999 12280 534068 339272 8192 16 12497 17699 548914 580657 8192 32 20492 34636 495255 291012 8192 64 21653 36990 928470 258971 8192 128 19883 30880 381962 722514 8192 256 28175 56623 503721 482107 8192 512 23737 36777 264259 379947 16384 4 5539 5398 351450 181096 16384 8 10885 10756 249038 156733 16384 16 11579 12246 564520 492857 16384 32 16787 19451 317914 281658 16384 64 18392 25017 702539 530915 16384 128 29097 39840 946278 709049 16384 256 38715 43303 382606 304817 16384 512 24535 55823 543216 1093653 32768 4 5602 5299 194266 210561 32768 8