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 15:11:23 2025 Auto Mode Machine = Linux oleg251-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-oleg251-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 8877 26123 370355 385237 64 8 8959 30901 532815 576282 64 16 11845 51200 821391 212739 64 32 21004 102074 1143223 1143223 64 64 34557 67449 1452528 901377 128 4 15628 15997 309827 62866 128 8 20279 43744 612303 571257 128 16 14746 77584 418187 805138 128 32 24772 54329 1007629 1162547 128 64 29458 138840 1281909 1336145 128 128 47515 119045 1663139 1732927 256 4 17002 19271 171337 349206 256 8 25120 40881 661250 764334 256 16 31683 27896 984356 810490 256 32 61186 161009 1108314 1075025 256 64 33613 88550 1274008 1447470 256 128 21438 216053 1740810 1639786 256 256 47032 215273 2097948 815414 512 4 23357 26229 195193 205859 512 8 27763 27962 623759 549818 512 16 55416 30731 832743 869494 512 32 38929 66640 932550 321970 512 64 50884 130786 1422357 869143 512 128 45657 104318 1422357 1019791 512 256 110747 103409 1245780 975328 512 512 49296 170208 1645826 2187279 1024 4 18095 15699 204310 400470 1024 8 30859 35243 547352 661496 1024 16 47727 72876 798201 675011 1024 32 48395 79024 685461 1089317 1024 64 60560 78103 1372717 1218843 1024 128 62488 184802 1519371 759659 1024 256 67850 202375 1081363 1121751 1024 512 110487 212540 2155236 1825466 2048 4 15488 15305 344952 395361 2048 8 38272 29650 486797 627469 2048 16 52003 27888 882394 957009 2048 32 32547 77535 1140942 909776 2048 64 101421 103039 734069 1227167 2048 128 114457 100619 1235285 1524983 2048 256 89066 161310 1628174 1728424 2048 512 61819 137364 1698352 691687 4096 4 19697 21021 301328 301598 4096 8 29205 27771 568497 373688 4096 16 44016 41958 471019 462722 4096 32 51970 65634 1066092 617341 4096 64 65451 62146 781407 1115445 4096 128 78147 108678 1017414 667962 4096 256 96437 112759 845224 1230754 4096 512 107894 160565 1673178 887536 8192 4 18581 19015 336247 293884 8192 8 32597 34221 607934 588797 8192 16 59362 55425 683533 683914 8192 32 74470 85407 717519 913657 8192 64 92513 99753 1041052 1049992 8192 128 90867 121696 1081760 1175865 8192 256 123030 133394 1012492 1038033 8192 512 105393 162195 1358747 1837241 16384 4 22872 26244 328361 314321 16384 8 35196 38511 491303 569818 16384 16 54897 55185 822694 584394 16384 32 64724 90296 648898 890381 16384 64