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 May 28 17:54:59 2025 Auto Mode Machine = Linux oleg457-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-oleg457-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 18697 21549 334788 463774 64 8 27740 47902 831569 866463 64 16 37057 68377 1066042 395452 64 32 42241 126274 1279447 1363961 64 64 43068 104742 1892980 1304314 128 4 18924 32152 427851 397444 128 8 38176 42343 601330 800337 128 16 58394 82750 1133103 1065630 128 32 58959 128015 1598754 1539168 128 64 70411 142868 1152564 1911894 128 128 83718 266727 2132084 1102844 256 4 24688 29798 455592 367870 256 8 49363 44274 744204 727070 256 16 71270 93671 1158540 920240 256 32 65420 136023 1254656 1561112 256 64 97667 105872 1495866 2015259 256 128 63535 229637 1871263 1439707 256 256 95777 115062 1729594 2266207 512 4 26875 29127 473138 409605 512 8 50693 61178 786391 795127 512 16 70444 97132 1040545 806474 512 32 114362 173019 1040545 1045103 512 64 127079 193872 1087440 1422357 512 128 134311 158418 1809465 1471074 512 256 139775 263242 2169601 2225819 512 512 161613 296785 2032051 1740536 1024 4 28491 33929 428476 297851 1024 8 48265 58491 567006 383383 1024 16 78769 89943 915028 945443 1024 32 100856 131096 1460472 1367473 1024 64 150945 226542 1625769 1946237 1024 128 181430 211795 1720874 1490373 1024 256 167596 176039 1499217 2155236 1024 512 180023 291306 1964935 1720874 2048 4 31524 31049 432245 376820 2048 8 52527 58114 534439 528097 2048 16 61308 95246 1088324 615024 2048 32 121744 145837 1338662 1471432 2048 64 150732 195382 1607757 1582579 2048 128 162295 215492 1474462 1603854 2048 256 170169 246124 1492913 1867050 2048 512 153154 182889 1811150 2058551 4096 4 29775 29588 445943 420623 4096 8 52439 41376 609349 540658 4096 16 74219 78353 800784 1118859 4096 32 119758 125298 1180032 1452498 4096 64 130478 133520 1040648 961498 4096 128 163538 187518 1629225 1701009 4096 256 182522 223104 1500319 1764606 4096 512 177469 255125 1223741 1535314 8192 4 29294 31625 473967 425803 8192 8 52439 54722 617472 650102 8192 16 88666 96701 1007504 949562 8192 32 93950 113706 1113017 1197128 8192 64 144996 161326 1189502 1026957 8192 128 144299 175121 1405374 1510331 8192 256 183483 210483 1612920 1410451 8192 512 205721 249300 1687708 1448872 16384 4 30182 31247 385577 451822 16384 8 51200 51745 777037 712563 16384 16 76896 91614 869461 1052884 16384 32 123836 145058 1304573 1323646 16384 64 149620 173064 1246797 1381440 16384 128 154948 181990 1491346 1514251 16384 256 207450 226111 1518467 1686499 16384 512 160062 191870 1552077 1450824 32768 4 27845 30128 399395 463716 32768 8 49448 55312 771938 716552 32768 16 76968 84365 943017 985742 32768 32 112725 124618 1381395 1090561 32768 64 156157 159801 1181215 1065246 32768 128 167268 218996 1526220 1501740 32768 256