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 Mar 25 07:50:01 2025 Auto Mode Machine = Linux oleg332-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-oleg332-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 22144 25661 620221 347801 64 8 28144 69872 955947 581273 64 16 34279 81620 1183548 901377 64 32 50111 135861 1163036 1879725 64 64 54002 141296 1780008 1484662 128 4 23201 29912 296318 477725 128 8 44304 58078 612303 992724 128 16 59369 105958 789741 1467639 128 32 68593 167572 1319723 1175271 128 64 76143 191342 1133103 1387960 128 128 85847 225689 2166499 1967960 256 4 30086 30360 445942 542347 256 8 41995 60664 771473 654798 256 16 66721 106576 870268 1080434 256 32 99810 172743 1256123 1572543 256 64 76878 212294 1778290 1430119 256 128 99884 233127 2034350 1487577 256 256 115570 318352 2486631 2613746 512 4 26910 34433 519241 577310 512 8 50945 58924 957072 826971 512 16 83197 82500 1221684 1261144 512 32 104853 158219 1108203 1538526 512 64 112305 170329 1895721 1882427 512 128 147941 247326 1556366 1594501 512 256 161212 244844 1610042 1442420 512 512 169764 268341 2256220 2337255 1024 4 32425 29124 437779 358307 1024 8 52737 57554 764119 731954 1024 16 81790 107133 1041758 1204825 1024 32 120035 140487 1238168 1193442 1024 64 146601 162695 1440391 1292961 1024 128 162363 182300 1503415 1837965 1024 256 170409 245387 1765437 1903961 1024 512 153015 283968 1845071 1869160 2048 4 30387 32249 470918 431139 2048 8 49723 53141 646257 693306 2048 16 75986 100358 1061690 1048600 2048 32 109847 152482 1153815 1354493 2048 64 140416 207292 1418228 1446407 2048 128 158270 223703 1856558 1709505 2048 256 147148 207497 1680082 1729816 2048 512 187153 278218 1750616 1764279 4096 4 30184 33915 445365 464135 4096 8 47700 55238 657054 640303 4096 16 84066 94189 761761 1021953 4096 32 116287 116948 1276857 1275246 4096 64 137518 162779 1526583 1566390 4096 128 177654 210244 1458664 1681365 4096 256 198409 214248 1870466 1713735 4096 512 209856 215047 2015752 1880704 8192 4 29194 32098 447108 471645 8192 8 50639 55505 617605 582350 8192 16 86562 94840 1040138 1084149 8192 32 124068 142944 1371985 1005146 8192 64 152146 206295 1298023 1461817 8192 128 185109 214810 1374730 1624742 8192 256 191213 233436 1435915 1666103 8192 512 191761 282026 1976764 1894475 16384 4 30008 32418 477584 446454 16384 8 49806 55839 645903 695415 16384 16 87029 88076 1087044 1076756 16384 32 117705 142232 1440605 1343599 16384 64 156213 183018 1325126 1393542 16384 128 174182 243042 1644998 1555203 16384 256 190886 260995 2011293 1917353 16384 512 206488 275222 1597800 1818225 32768 4