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: Mon Nov 3 05:49:15 2025 Auto Mode Machine = Linux oleg151-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-oleg151-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 9236 14621 260160 146063 64 8 7876 19214 361380 438759 64 16 15191 46881 811459 492717 64 32 20717 57967 571375 703068 64 64 12386 63688 1279447 1163036 128 4 9100 21365 242839 202226 128 8 17055 32812 389091 268327 128 16 20103 45812 551878 831319 128 32 23686 84602 1240443 811221 128 64 34857 94059 1579934 1206978 128 128 34521 152053 1391557 1294270 256 4 16167 20155 266714 293227 256 8 23151 33956 447428 359014 256 16 39294 55471 635047 494400 256 32 35709 73394 817898 638445 256 64 48275 93232 842278 1016025 256 128 45943 108144 1142514 541253 256 256 47433 149446 1514860 1652404 512 4 18212 19404 252472 234523 512 8 27681 32651 440256 477239 512 16 29221 55184 575917 486317 512 32 43003 83811 602412 395644 512 64 51937 93243 846197 712076 512 128 50146 125769 1463057 1015932 512 256 55279 115812 1111070 1339827 512 512 59888 104961 1316016 1783912 1024 4 13201 16965 235137 209237 1024 8 20383 32587 390245 422450 1024 16 42992 48077 573978 463979 1024 32 41545 83224 804480 649296 1024 64 63511 87082 1092921 893517 1024 128 30649 98168 1185209 1166221 1024 256 59335 86456 1408737 1329791 1024 512 86326 113100 673318 1446211 2048 4 15343 18616 210528 298191 2048 8 25875 31939 475954 395379 2048 16 44416 54475 549797 597444 2048 32 42648 68863 1007876 820526 2048 64 72882 100356 1113002 840353 2048 128 65469 98108 1261777 1022513 2048 256 77350 135253 1353639 1104132 2048 512 56417 113682 1414259 1051424 4096 4 17168 17523 287983 238639 4096 8 28380 32594 468489 418258 4096 16 42502 52072 587912 614273 4096 32 50596 84977 922319 856005 4096 64 56710 91263 1045716 1058147 4096 128 90467 97015 1368062 1087071 4096 256 82214 139423 1371667 1321751 4096 512 100570 118680 1591346 1439114 8192 4 18156 19536 301798 282610 8192 8 32849 35083 428117 465271 8192 16 45905 55603