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: Sun Jun 22 06:48:46 2025 Auto Mode Machine = Linux oleg422-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-oleg422-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 4 376 549 300665 363337 64 8 1289 1119 374488 546928 64 16 1957 2602 710511 443837 64 32 547 3822 983980 1330167 64 64 2515 5576 1526887 1392258 128 4 536 585 102401 150941 128 8 869 1037 420809 539674 128 16 2254 2663 687585 684081 128 32 2813 4179 908709 914904 128 64 4635 8406 1220700 960747 128 128 6750 13868 1319723 1705404 256 4 705 711 159787 242883 256 8 925 1276 453858 481109 256 16 2070 2355 571502 271503 256 32 4306 4525 1024752 430218 256 64 3896 8114 984356 1201314 256 128 10651 10201 1514860 1339154 256 256 8799 11359 1766587 1272498 512 4 620 707 243705 103309 512 8 1111 1110 649806 494264 512 16 2321 2027 230941 760762 512 32 2520 3271 1069035 1115109 512 64 5722 7590 1218910 1222379 512 128 10390 14129 1411141 1674052 512 256 12826 20180 198826 1380303 512 512 23232 35899 2089386 1809465 1024 4 537 657 232880 122413 1024 8 1161 1274 474749 528363 1024 16 2093 2198 360806 560129 1024 32 2938 4167 949204 1004011 1024 64 6000 6627 869284 769320 1024 128 8752 11681 1275301 1326505 1024 256 10409 22141 662312 1444266 1024 512 13978 17430 1387350 281161 2048 4 534 590 272196 256547 2048 8 1222 716 627469 509824 2048 16 2047 1919 378547 592580 2048 32 3704 3324 942002 547310 2048 64 5954 4702 831165 1120990 2048 128 8488 13366 1446407 1350872 2048 256 16977 18524 653485 1482862 2048 512 24794 28583 1596106 1536439 4096 4 584 628 315274 265938 4096 8 1045 1090 226824 284605 4096 16 1864 2246 449219 808357 4096 32 3127 3118 1187208 1150863 4096 64 5680 4975 416009 1308264 4096 128 6838 8354 1374960 1000994 4096 256 16278 19215 1521041 1578334 4096 512 21220 24331 1561549 1624143 8192 4