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: Sun Sep 6 00:00:44 2026 Auto Mode Machine = Linux oleg201-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-oleg201-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 2648 4785 561808 112466 64 8 2541 7138 614542 566551 64 16 4557 30359 942521 1119387 64 32 5474 63313 1255511 998622 64 64 3187 45911 1553394 1562436 128 4 4596 8413 597981 551312 128 8 3251 13426 836500 836500 128 16 6665 64451 1732927 774922 128 32 12565 72191 1306873 1111981 128 64 11253 68778 1391557 1231904 128 128 7491 154414 1391557 1967960 256 4 3245 12890 570288 440634 256 8 10400 17279 670332 218071 256 16 16647 40231 1094754 785584 256 32 15887 49593 1686137 408918 256 64 15707 70795 620012 1707589 256 128 17875 93983 1248819 1173737 256 256 31742 45503 1561112 1455317 512 4 9589 14901 537299 250382 512 8 4780 5804 401563 656360 512 16 8719 16319 1551867 977103 512 32 12278 57567 734482 1009722 512 64 12569 25561 1261144 332489 512 128 26767 47364 524697 1252318 512 256 11676 53861 508423 1433753 512 512 26879 40596 1152822 1992458 1024 4 5423 3347 194414 750238 1024 8 10803 12208 223140 91837 1024 16 8494 13406 430797 234379 1024 32 31572 33168 791435 725280 1024 64 23885 37106 935966 537825 1024 128 22202 15223 1304348 135990 1024 256 14233 71848 1471481 260683 1024 512 19156 77728 397211 228215 2048 4 5316 4994 211988 271938 2048 8 8499 9545 318313 235187 2048 16 11618 12991 781058 215239 2048 32 24207 35895 617989 1003871 2048 64 13703 17480 1252577 580173 2048 128 30006 71289 1080113 325181 2048 256 34819 70175 462401 1241893 2048 512 45344 80655 794422 398663 4096 4 5593 9135 368083 295675 4096 8 12996 13692 685527 332409 4096 16 23515 15361 569118 878190 4096 32 25331 24682 705834 489081 4096 64 1721 28351 1049934 604758 4096 128 41366 44594 630065 660642 4096 256 36326 46620 367022 726765 4096 512 28121 55025 959726 512513 8192 4 8737 6912 197473 491838 8192 8 8772 12547 441025 358310 8192 16 17138 16072 396188 296488 8192 32 18632 27843 728117 552622 8192 64 30473 25092 523522 385251 8192 128 34453 38137 805586 679505 8192 256 32806 45353 785656 755444 8192 512 33084 45793 837617 566368 16384 4 5953 6260 281429 132778 16384 8 11167 9434 658972 582399 16384 16 15023 19284 346963 359250 16384 32 19345 29162 589756 371384 16384 64 24453 37661 1267821 870100 16384 128 22373 45634 784936 569304 16384 256 32788 43228 695268 650033 16384 512 34227 54298 632247 418256 32768 4 5881 10221 506827 410101 32768 8 9234 9806 249152 254245 32768 16 12613 13694 242839 685420 32768 32