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: Thu May 1 15:50:00 2025 Auto Mode Machine = Linux oleg453-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-oleg453-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 11680 17806 334788 101572 64 8 15271 44050 555990 515423 64 16 13487 75217 811459 1013707 64 32 9685 104416 809014 94128 64 64 19178 129503 1780008 1599680 128 4 4961 10349 363535 370050 128 8 20457 45762 531131 574312 128 16 33925 49345 953918 940549 128 32 30390 117123 889145 1076312 128 64 14685 137068 1455701 1561553 128 128 39531 130599 1067750 1440082 256 4 19497 25286 356985 398744 256 8 22963 10556 748875 61969 256 16 35467 18684 917880 792543 256 32 48273 105270 1132871 1040643 256 64 44428 137715 1430119 958864 256 128 66875 186322 1588832 1552085 256 256 63712 146290 1842366 2131261 512 4 18842 16447 133121 138041 512 8 26831 53517 654559 553502 512 16 47769 74018 801357 919375 512 32 41337 90619 1026126 427036 512 64 78178 114162 1320061 1042566 512 128 86096 192206 1579257 891884 512 256 83906 200085 1712772 1795846 512 512 72501 219471 1179413 1961520 1024 4 7444 10013 266176 353850 1024 8 25766 42482 385689 557150 1024 16 25179 54205 550862 770424 1024 32 56112 99591 984676 1132697 1024 64 73812 174714 1434138 835953 1024 128 60419 85333 1568189 1532928 1024 256 129652 199498 1370965 1695735 1024 512 105915 148001 2004366 1793451 2048 4 17003 17987 348125 369876 2048 8 24546 14073 639617 196526 2048 16 32936 39226 761059 939529 2048 32 48603 85447 1140336 825811 2048 64 32200 58229 1274318 1304310 2048 128 33722 201217 1523901 1437211 2048 256 39580 71184 850168 786206 2048 512 67269 206574 1753117 1706788 4096 4 15868 8672 237380 119011 4096 8 16965 25840 600069 510412 4096 16 33581 47453 748421 424416 4096 32 45150 52302 1174627 1235534 4096 64 65030 82164 1238563 506052 4096 128 121978 94681 410591 1339059 4096 256 67345 70910 1097207 1358972 4096 512 40049 66795 939468 791669 8192 4 14893 19046 265089 269190 8192 8 27247 31870 367696 391493 8192 16 35389 40522 350563 262749 8192 32 48300 49806 1074789 721255 8192 64 67623 56320 1051212 617095 8192 128 44437 51618 1290079 1520691 8192 256 61726 69169 1266120 1463872 8192 512 65872 82036 531220 1186217 16384 4 5209 17224 163613 238440 16384 8 20287 30970 427634 216281 16384 16 32936 36059 685092 788566 16384 32 55622 55833 665610 835243 16384 64 84178 116165 499038 1040781 16384 128 52340 85706 1076621 632462 16384 256 64084 97801 524957 976686 16384 512 60547 54630 615177 566194 32768 4 16624 15756 286365 165148 32768 8 24878 24655 482563 408690 32768 16 41155 32067 347936 306360 32768 32 42028 62310 855252 790752 32768 64 55056 59673 1090198 559965 32768 128 86780 90886 1382312 1269388 32768 256 64653 95509 1048505 1087842 32768 512 92716 98605 693930 1054280 65536 4 14861 17445 291276 267781 65536 8 24848 23803 309836 400383 65536 16 37995 48477 562974 666864 65536 32 63620 69308 740779 954278 65536 64 66338 104532 927076 1062897 65536 128 78344 114639 815103 686398 65536 256 76489 106084 1152543 1156004 65536 512