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: Tue Mar 11 07:24:30 2025 Auto Mode Machine = Linux oleg317-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-oleg317-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 20532 20241 418250 474430 64 8 26599 60028 855419 852702 64 16 33509 86374 1168097 1255511 64 32 39929 96392 1722886 1734015 64 64 53241 122808 1933893 2067979 128 4 28514 29519 475609 309292 128 8 41612 38671 877518 511887 128 16 52780 104048 800337 1281909 128 32 58823 104149 1598754 895074 128 64 78286 184440 1332828 1455701 128 128 70291 243389 2211113 1827299 256 4 27190 29987 284148 336405 256 8 39288 46010 556398 773697 256 16 60537 74768 812329 1325925 256 32 72624 118022 1497953 1158540 256 64 55208 166321 1219045 1202660 256 128 57475 129619 1267990 1173737 256 256 58232 157629 1178892 937924 512 4 18489 20597 249654 252235 512 8 26057 35733 437297 435347 512 16 32353 65868 1245780 517116 512 32 48356 147849 794832 621413 512 64 80784 126607 788702 1025636 512 128 108061 240943 1258188 1080328 512 256 145623 258210 1842059 1823291 512 512 149621 267505 2124526 1916017 1024 4 24740 18291 355079 245093 1024 8 29284 30090 328642 668393 1024 16 51569 66936 1074331 1174192 1024 32 86130 146222 931702 1503942 1024 64 146372 171436 1590254 1121458 1024 128 178178 260493 1622698 1812371 1024 256 178031 260683 1958662 2048338 1024 512 154635 221929 1635675 2255990 2048 4 28681 32412 440717 386989 2048 8 55096 51314 523910 695439 2048 16 76318 103268 1090535 1115459 2048 32 125437 87104 1074439 1329133 2048 64 130105 131409 866374 1437211 2048 128 153556 218825 1671907 1990343 2048 256 128651 274642 1727034 1806199 2048 512 175298 272594 1745990 2140097 4096 4 27262 25653 306106 253025 4096 8 55775 59749 702572 683672 4096 16 86395 102159 1107606 947708 4096 32 121539 145047 1072816 1181737 4096 64 142468 191000 1504260 1438150 4096 128 194860 182782 1133400 1174627 4096 256 142832 133917 945309 860680 4096 512 84552 197767 2080188 2063448 8192 4 24690 24166 391453 264481 8192 8 50425 42093 222996 625338 8192 16 71214 69568 670044 587619 8192 32 89764 121528 1017137 1193303 8192 64 170435 155031 1390305 1208964 8192 128 184503 206129 1323013 1266727 8192 256 215199 186780 1483209 1304033 8192 512 204091 222753 1454023 1296212 16384 4 32707 36673 439178 411760 16384 8 56064 53342 848736 742096 16384 16 64092 72788 854934 862445 16384 32 100390 124963 1086700 1260796 16384 64 155519 158056 1317782 1401185 16384 128 160234 239931 1549312 1686623 16384 256 221073 204322 1839248 1566048 16384 512 205076 225305 1756058 1788647 32768 4 35808 33824 390238 447999 32768 8 56788 59763 709615 631149 32768 16 94549 106294 997200 859714 32768 32 117698 148800 1364824 1532586 32768 64 167733 160699 1422530 1582909 32768 128 206944 276560 1738549 1636103 32768 256 236312 252582 1797861 1627077 32768 512 234350 244944 1723808 1608793 65536 4