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 17:51:08 2025 Auto Mode Machine = Linux oleg431-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-oleg431-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 8181 20571 404998 811459 64 8 9535 34464 718114 801764 64 16 11235 52760 821391 901377 64 32 12726 78060 969761 998622 64 64 13350 89246 1143223 1188789 128 4 11962 21185 546819 621518 128 8 14449 35184 739689 831319 128 16 19240 55698 809997 799146 128 32 21629 80953 727658 1114289 128 64 22164 103407 1133103 1162547 128 128 28132 124166 1165070 1162547 256 4 14975 22904 619655 635423 256 8 20485 38934 820398 713067 256 16 27153 61685 695516 941213 256 32 32079 85361 868157 1137672 256 64 34403 104056 800221 1180188 256 128 37696 126742 1175022 1128110 256 256 37869 138981 1213534 996229 512 4 16717 23210 492790 639930 512 8 25008 39475 757541 793657 512 16 34989 56343 984720 922535 512 32 42289 78876 986529 1057454 512 64 47994 110038 1064266 1207261 512 128 56437 130985 1044594 1030558 512 256 55350 140663 1091863 1199171 512 512 56599 150544 1089647 1098566 1024 4 19711 23515 601973 598451 1024 8 26606 36715 735086 756714 1024 16 39636 55285 950044 979958 1024 32 50748 79085 963255 1013727 1024 64 61167 100707 990352 1139005 1024 128 68080 116762 956178 1147832 1024 256 72944 130412 1383774 1223705 1024 512 76681 136444 1126458 1155553 2048 4 25789 26280 555917 572669 2048 8 31781 43331 794128 820840 2048 16 46794 55711 900242 924264 2048 32 61276 79801 1052842 1077809 2048 64 74570 101779 1054522 1102856 2048 128 83652 118690 1112425 1154436 2048 256 89537 131542 1131474 1149185 2048 512 76917 138886 1143524 1147956 4096 4 31903 33166 570081 554192 4096 8 44717 47240 706937 747314 4096 16 57137 63081 941630 961929 4096 32 73107 83145 1007333 975253 4096 64 82085 101215 1083848 1158078 4096 128 92343 131673 1050833 1124057 4096 256 98672 129899 1105539 1143433 4096 512 104094 137958 1141837 1105255 8192 4 30556 39737 580746 608311 8192 8 52241 61586 771594 828908 8192 16 56744 84995 910413 982835 8192 32 90201 117187 1011508 1086034 8192 64 109235 121397 1067079 1149739 8192 128 109564 118576 1079313 1171655 8192 256 118350 161890 1074655 1159986 8192 512 122398 154939 1100927 1180227 16384 4 32854 37444 573389 606522 16384 8 58439 61023 765217 800508 16384 16 74322 74308 906089 960536 16384 32 103618 94150 998411 1066727 16384 64 131695 125577 1052143 1129459 16384 128 139860 137232 1058186 1135337 16384 256 107043 146480 1065900 1134774 16384 512 140450 154946 1076402 1150563 32768 4 40532 43389 606016 702075 32768 8