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: Fri May 23 17:50:25 2025 Auto Mode Machine = Linux oleg237-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-oleg237-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 12391 22488 342040 581273 64 8 16359 38207 538156 743988 64 16 19178 62011 939223 969761 64 32 23588 91967 1033216 1002351 64 64 22330 113656 1163036 1105556 128 4 15108 22971 595328 624409 128 8 24055 41077 821147 662962 128 16 29171 65203 921183 983630 128 32 35379 96528 1051027 1093856 128 64 40161 124252 870405 1175271 128 128 42792 154592 1172704 934004 256 4 17738 23136 613634 636553 256 8 27996 41884 807442 841618 256 16 39463 69154 965763 1019886 256 32 49477 97970 1070737 1126926 256 64 57285 129478 1190657 1197295 256 128 56875 148927 1202660 1019886 256 256 65842 178249 1031644 1208072 512 4 19010 24082 580431 563376 512 8 32231 43029 853257 756207 512 16 47508 69678 990168 875164 512 32 61605 101690 1093531 1002183 512 64 72337 135267 1165966 1043072 512 128 85862 160958 1026126 1216149 512 256 83566 178394 1204552 1068503 512 512 89356 196767 1066910 1233614 1024 4 21275 24213 600879 600207 1024 8 34346 43518 810706 815943 1024 16 48418 70397 943781 961529 1024 32 72772 95861 1046836 1053512 1024 64 84901 135360 1099918 1130312 1024 128 98985 162050 1110727 1117955 1024 256 104221 181078 1126458 1122924 1024 512 104287 192411 1172909 1154621 2048 4 28240 37358 610219 619281 2048 8 37759 47705 788298 829800 2048 16 53688 70131 940352 939426 2048 32 73208 104012 1067230 1093311 2048 64 91424 136669 1111849 1124071 2048 128 105279 149993 1132070 1181103 2048 256 113274 182741 1136564 1157703 2048 512 91698 177072 1159735 1147343 4096 4 30337 46007 1008160 889466 4096 8 47664 66366 877293 834549 4096 16 65834 72225 958976 979869 4096 32 72191 105055 1058407 1083028 4096 64 94777 134176 1103692 1139338 4096 128 107281 147955 1106750 1142521 4096 256 114827 165669 1126193 1149939 4096 512 122235 144965 1143814 1168316 8192 4 37993 40518 610755 636517 8192 8 57379 82833 1013986 978971 8192 16 67628 100993 906091 980032 8192 32 82745 115582 1009725 1088063 8192 64 117931 151448 1059217 1151511 8192 128