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 Apr 8 23:53:00 2025 Auto Mode Machine = Linux oleg239-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-oleg239-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 7873 18069 286849 310759 64 8 8489 30418 460591 457452 64 16 9869 47936 640954 598110 64 32 10153 68082 811459 866463 64 64 9992 86152 1017549 969761 128 4 11055 17374 147136 285751 128 8 15200 43670 881842 919605 128 16 15894 41709 455436 670413 128 32 24995 68089 587511 843068 128 64 19282 86903 1024942 1000121 128 128 22726 105624 1093856 1093856 256 4 13163 18421 258061 269188 256 8 18244 31307 418155 481109 256 16 24492 51007 680960 641497 256 32 28871 73812 864661 718796 256 64 30367 94115 780445 725106 256 128 30817 112968 744204 1103757 256 256 37651 124754 1168627 1163562 512 4 14505 18751 152652 273362 512 8 23406 29866 443254 455090 512 16 32904 47588 368110 613951 512 32 33972 71198 882718 745445 512 64 48626 95380 879825 1219602 512 128 48466 113372 1062161 1118011 512 256 44837 123370 1017858 751707 512 512 56636 134135 1185272 1190529 1024 4 13609 22567 214086 280555 1024 8 28568 41753 435957 442925 1024 16 50823 102246 1326505 1292961 1024 32 60316 75089 911920 1058967 1024 64 57319 84971 844168 879790 1024 128 61199 110085 1004951 1033237 1024 256 67103 109214 1017811 946485 1024 512 69441 126984 1030016 1004011 2048 4 26377 32554 371700 418290 2048 8 31980 34178 390242 394834 2048 16 42890 100098 967901 900997 2048 32 46129 72375 740971 571412 2048 64 59543 92557 810768 939015 2048 128 75290 112453 866724 1039590 2048 256 82225 126850 671046 1010960 2048 512 85748 132805 1060511 719858 4096 4 26400 30152 254521 209697 4096 8 39106 44789 413148 429080 4096 16 51977 57227 614382 548758 4096 32 68329 77805 795813 848354 4096 64 77802 87412 844352 652958 4096 128 83865 102058 758097 915097 4096 256 92636 152590 877293 958387 4096 512 84406 118020 818369 818057 8192 4 27576 30844 373634 387970 8192 8 47395 49442 434011 439322 8192 16 51810 76382 572311 627210 8192 32 73000 69249 696954 724250 8192 64 80409 85422 777672 850661 8192 128 101578 113313 1730027 1339884 8192 256 143168 181098 960015 1091519 8192 512 93315 155708 1900238 890429 16384 4