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 Sep 30 10:57:12 2026 Auto Mode Machine = Linux oleg241-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-oleg241-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 3264 9276 572594 546928 64 8 3221 13242 901377 615952 64 16 4224 42388 1013707 874936 64 32 3366 36547 363829 942521 64 64 2005 22678 1255511 1638743 128 4 3777 8127 462100 164542 128 8 7747 21167 948860 757430 128 16 3705 8215 962469 848397 128 32 5490 46191 940549 794416 128 64 6973 41544 1254941 1391557 128 128 9193 73646 1487977 2098744 256 4 7126 8671 381462 588414 256 8 7337 18673 711178 739590 256 16 6182 15792 729540 838988 256 32 9168 96060 1463250 984356 256 64 10410 34882 1506359 1266495 256 128 9554 89101 1523457 1629830 256 256 18647 107839 930608 1967260 512 4 6724 7984 349479 158523 512 8 7914 18452 673655 735740 512 16 17105 34249 1160923 500951 512 32 20778 48152 1190529 1017858 512 64 15417 38711 705989 215032 512 128 19676 71950 1580419 1242896 512 256 18347 99958 853257 528441 512 512 20209 74364 1747618 1053304 1024 4 6327 9623 172075 295008 1024 8 4228 7967 266324 194608 1024 16 8594 14720 1066859 1013967 1024 32 15576 29782 882683 428818 1024 64 21954 55219 533085 1211622 1024 128 26525 48859 1518833 1016847 1024 256 28784 59290 1187831 1197769 1024 512 27025 46706 1612342 1587315 2048 4 7429 8632 327900 347407 2048 8 12460 9024 350026 324004 2048 16 10208 17728 1062216 175807 2048 32 15905 21278 233893 670784 2048 64 28211 62652 1487227 331762 2048 128 35178 72932 1631886 453108 2048 256 30881 43036 1625402 1430271 2048 512 45605 39720 1705432 1543340 4096 4 6205 5205 351076 211985 4096 8 9477 7645 599273 362216 4096 16 13477 16736 312004 261458 4096 32 34696 15525 636131 781976 4096 64 12818 19184 484967 804270 4096 128 28568 29125 591210 578353 4096 256 36785 49294 325211 560649 4096 512 16501 42755 1734148 717088 8192 4 3562 1558 278025 271151 8192 8 8005 9799 191966 251289 8192 16 14638 15875 336329 380334 8192 32 17500 26319 544279 498293 8192 64 22538 27424 378191 408190 8192 128 22918 23165 773627 591228 8192 256 33901 32402 818872 489923 8192 512 30737 43869 501991 628219 16384 4 7153 5792 298950 193978 16384 8 8395 8240 631225 359874 16384 16 12899 13513 559100 604686 16384 32 31923 16064 235772 555520 16384 64 33270 47063 532243 566255 16384 128 26131 61812 412779 609843 16384 256 35582 39998 788720 610982 16384 512 26954 37630 593366 611389 32768 4 4379 4691 367149 386807 32768 8 8434 10313 417926 209510 32768 16