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 Sep 2 06:44:13 2025 Auto Mode Machine = Linux oleg208-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-oleg208-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 3368 16614 199906 254006 64 8 6447 29277 433096 566551 64 16 12068 36114 484710 603489 64 32 14784 61598 735831 710511 64 64 8692 76372 889431 1330167 128 4 10781 17260 164290 253025 128 8 12587 24672 375485 403721 128 16 11496 45440 640042 653282 128 32 15180 68445 948860 666253 128 64 11751 79550 1111981 1040839 128 128 17691 79656 814915 1598754 256 4 11517 18409 273787 257813 256 8 16638 26088 445202 257565 256 16 26724 41760 536654 497147 256 32 23675 71650 620012 773140 256 64 37630 94222 941213 913973 256 128 32833 108057 817898 1231629 256 256 25848 111641 1340826 1506359 512 4 13288 9614 243346 226150 512 8 24152 29483 506983 354791 512 16 20039 35116 224660 662230 512 32 32996 45722 932550 531186 512 64 29285 97894 1242896 764281 512 128 37413 87821 999850 1003588 512 256 45543 107925 1446306 1387437 512 512 44149 76122 1556366 1795846 1024 4 15856 16122 237582 191904 1024 8 19491 27168 452111 441968 1024 16 31350 48683 408313 508171 1024 32 46963 67786 910953 701814 1024 64 43389 96304 1124099 352630 1024 128 59423 93875 1372279 1080004 1024 256 49152 114682 1436056 1387798 1024 512 45720 106090 793775 1232484 2048 4 15137 19065 182172 253968 2048 8 26261 27943 304534 544673 2048 16 39148 54041 630139 653037 2048 32 49521 61411 878154 803488 2048 64 53658 104740 706710 1040094 2048 128 66510 103710 1448358 1234397 2048 256 73410 135092 1631886 1368084 2048 512 71828 131915 1474209 1510236 4096 4 17067 19309 279762 236462 4096 8 28247 32226 452246 433169 4096 16 37505 55633 680045 635542 4096 32 54382 74414 795334 811412 4096 64 63948 100787 1133027 1089968 4096 128 78363 113299 1391217 1221913 4096 256 80220 139604 1496529 1396078 4096 512 73776 133846 1630462 1495357 8192 4 16616 19437 263154 306187 8192 8 28967 33076 453720 444200 8192 16 38815 52479 673749 668623 8192 32 62854 73612 751824 902213 8192 64 73541 104601 1069703 1129147 8192 128 82460 122135 1386154 1357190 8192 256 78532 119111 1611332 1340354 8192 512 93525 121107 1688372 1620527 16384 4 17797 18764 280615 254948 16384 8 28662 33762 487400 435894 16384 16 45962 54413 712039 728989 16384 32 62038 73932 966439 837625 16384 64 78475 98434 1262255 1259618 16384 128 94131 123692 1657616 1167035 16384 256 85902 113226 1608797 1227992 16384 512