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: Thu May 1 15:34:46 2025 Auto Mode Machine = Linux oleg228-client.virtnet 3.10.0-7.9-debug #1 SMP Sat Mar 26 23:2 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-oleg228-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 1963 23063 306151 211232 64 8 8743 38050 503814 551422 64 16 12603 49455 789967 752329 64 32 10960 73993 998622 1392258 64 64 9751 70477 1452528 1484662 128 4 9288 14972 363781 361576 128 8 10409 41858 498114 422464 128 16 5615 55365 859260 836500 128 32 18582 85957 901083 1123617 128 64 23533 128259 1663139 1471662 128 128 15194 101261 1827299 1858934 256 4 13499 20887 166554 332447 256 8 19039 39324 666586 572721 256 16 15881 64567 873809 149093 256 32 21908 99690 1180188 833776 256 64 28864 120067 1098113 682691 256 128 43471 154766 1430119 569079 256 256 24594 145714 880256 1766587 512 4 12603 23681 71889 211308 512 8 22437 37872 338409 207610 512 16 21504 54917 400365 677267 512 32 28051 101729 1105920 1105920 512 64 28616 169429 1438555 856319 512 128 36454 143655 1574625 737762 512 256 15700 136021 1683237 853257 512 512 38617 45337 1753325 2124526 1024 4 7315 12486 262227 428305 1024 8 28273 33316 306131 596042 1024 16 16600 37124 847667 870165 1024 32 49297 85022 1062372 972414 1024 64 34229 41607 1304745 1258117 1024 128 49766 103319 1570483 1638796 1024 256 54415 177281 1648862 1648862 1024 512 63354 180788 1946237 1803239 2048 4 18733 17654 347520 281086 2048 8 20141 28196 421492 611696 2048 16 28667 20307 363305 423153 2048 32 62034 66006 1054522 1140336 2048 64 71443 118767 1144133 1332432 2048 128 81463 118164 1302727 1460673 2048 256 43307 132608 834557 1178995 2048 512 38066 118505 531956 1822292 4096 4 11316 12153 327286 236693 4096 8 20249 35248 580659 557194 4096 16 40659 60216 447849 827993 4096 32 45675 83755 704012 999712 4096 64 79549 93895 738163 1105824 4096 128 89793 72777 947917 930059 4096 256 44918 87480 1648296 1614527 4096 512 107772 58317 1157064 539233 8192 4 12310 14892 85586 214574 8192 8 22036 18465 523586 493548 8192 16 33886 29371 623002 544789 8192 32 72470 71517 916435 1157719 8192 64