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 Jun 17 12:51:02 2025 Auto Mode Machine = Linux oleg246-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-oleg246-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 9080 21185 392561 347801 64 8 12091 44290 842003 889431 64 16 14184 62677 842003 712397 64 32 16890 79306 983980 1232453 64 64 18740 106657 1679761 1526887 128 4 12784 19622 141923 281407 128 8 20641 37340 551312 524387 128 16 25044 59232 667081 699227 128 32 29562 106042 1196221 859260 128 64 21768 88028 1377278 1102844 128 128 34726 141736 1911894 1727352 256 4 20755 24559 417018 359014 256 8 27141 38629 550409 603970 256 16 41912 70581 621088 831194 256 32 54306 103266 1132871 1248819 256 64 43476 154144 1430119 1298662 256 128 59300 144226 1629830 1610276 256 256 54808 168965 2081678 2114473 512 4 21578 27385 429943 365168 512 8 32460 42676 572081 629611 512 16 48567 65354 742096 881269 512 32 63516 112182 1245780 1245058 512 64 93740 137784 782951 1225169 512 128 82526 146447 1401929 1515722 512 256 81372 178885 1635797 1689859 512 512 80949 183847 2463259 2246778 1024 4 21528 26121 368894 341662 1024 8 39881 49461 526163 629409 1024 16 49512 77184 799985 754057 1024 32 79079 108544 1146913 1142945 1024 64 93201 121788 1554004 1352402 1024 128 94499 144612 1080275 1470977 1024 256 101315 182727 1670669 1563622 1024 512 113049 185001 1558516 1882266 2048 4 23541 27227 365330 293454 2048 8 40138 44738 634233 673889 2048 16 64627 73613 927958 944591 2048 32 81534 104537 1014422 1033213 2048 64 96950 139007 1343897 884210 2048 128 140361 168061 1516904 1602657 2048 256 124369 182319 1381061 1392253 2048 512 117856 185036 1543340 1761024 4096 4 25841 26933 373997 441814 4096 8 43459 46950 622869 557339 4096 16 65147 82138 978530 631315 4096 32 99330 103567 1342092 1139036 4096 64 106588 147924 1345561 1424674 4096 128 123299 151211 1572987 1578915 4096 256 126166 178676 1735549 1619702 4096 512 142731 194031 1725266 1726827 8192 4 24775 25580 401212 385904 8192 8 42801 49428 772983 685634 8192 16 70394 82032 992717 805813 8192 32 93447 108242 1360846 1335509 8192 64 116333 141182 1308652 1250681 8192 128 139545 189519 1593176 1597844 8192 256 157399 157184 1564593 1759799 8192 512