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 Mar 13 16:40:54 2025 Auto Mode Machine = Linux oleg460-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-oleg460-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 9631 21355 95671 321554 64 8 10749 40276 621657 561808 64 16 7252 59867 842003 821391 64 32 14625 51151 1330167 1083249 64 64 6027 63492 1452528 1638743 128 4 8500 14215 374176 336848 128 8 19551 39262 462100 587511 128 16 20259 57322 193689 848397 128 32 16341 103807 978253 561694 128 64 30476 88580 1561553 1421023 128 128 22594 39131 1997245 800337 256 4 13506 21957 192054 332963 256 8 11276 35096 658008 775373 256 16 18774 74613 864661 907792 256 32 28312 77505 782721 548161 256 64 38101 109122 1398455 785010 256 128 32318 131766 446870 1132871 256 256 26843 67122 2061693 1855098 512 4 16259 20111 295600 319432 512 8 26154 27900 463338 408670 512 16 33840 47540 596887 680918 512 32 37847 89729 788992 990168 512 64 43899 108960 362089 1306409 512 128 68148 138228 1442420 417326 512 256 54451 157142 1433753 1043072 512 512 75361 172449 1834193 2097550 1024 4 23816 19291 366127 305304 1024 8 27478 30020 780504 520866 1024 16 41400 57006 881234 822506 1024 32 45837 77787 345815 992182 1024 64 57612 113026 1033486 1153071 1024 128 65603 114261 963471 421744 1024 256 69654 90999 1314729 1633188 1024 512 69100 170152 1855433 291642 2048 4 16235 16161 334150 304988 2048 8 33137 27745 575431 597444 2048 16 37769 55567 878244 894244 2048 32 63329 86963 978485 804390 2048 64 90216 112944 905461 832857 2048 128 73273 86221 1110555 1136414 2048 256 73349 61377 822490 628433 2048 512 75941 139558 2128958 1723915 4096 4 17784 20339 219964 212359 4096 8 40773 39063 304403 466086 4096 16 45901 63505 826121 742566 4096 32 68612 86253 1418322 1077593 4096 64 91379 132892 1273261 1222348 4096 128 106833 107831 1475451 1413887 4096 256 80008 143468 1340312 1136850 4096 512 113152 160595 963763 1641053 8192 4 21415 23028 295858 276878 8192 8 34482 41650 501779 451675 8192 16 51255 59987 546313 820593 8192 32 73403 86797 967176 811159 8192 64 80918 93121 1136016 959024 8192 128 88787 144342 840465 1131974 8192 256 111254 116505 984863 1026190 8192 512 98291 115588 1170777 1508342 16384 4 23103 23950 320871 237796 16384 8 34354 42733 418236 493866 16384 16 53254 62456 443194 735795 16384 32 69593 79377 776492 915615 16384 64 88273 87394 770503 761731 16384 128 83405 114628 981148 624082 16384 256 98410 139110 865595 876146 16384 512 132441 124214 958687 1392610 32768 4 21195 23702 347247 348355 32768 8 35058 42243 587703 487474 32768 16 55609 64006 627727 750303 32768 32 82373 93260 1064932 1220000 32768 64 89084 119795 1223824 1231456 32768 128 110468 100716 1416446 1338558 32768 256 93690 114790 1403701 1315459 32768 512 98947 121856 1185617 1330022 65536 4 21862 24024 370729 341839 65536 8