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: Fri Sep 11 04:32:08 2026 Auto Mode Machine = Linux oleg638-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-oleg638-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 4817 12994 653436 408077 64 8 2398 16855 771797 666414 64 16 5280 35377 1013707 939223 64 32 5005 33313 688639 855419 64 64 5115 44725 1232453 1232453 128 4 6955 10935 345965 329812 128 8 6930 8331 177548 799146 128 16 4926 14487 1102844 1048974 128 32 6122 19740 919605 983630 128 64 13382 41371 1421023 770474 128 128 15938 42525 1359835 399812 256 4 5045 10974 105695 503913 256 8 11982 24413 787890 438296 256 16 15376 33969 1057034 952062 256 32 11774 19860 123848 352994 256 64 8027 44936 610842 748353 256 128 16577 79261 1591186 1437779 256 256 10638 56914 1683493 2030503 512 4 4573 12435 634448 71647 512 8 7127 23831 498509 483470 512 16 10311 18294 519744 505908 512 32 12094 68248 1086890 832420 512 64 17339 82222 1391032 1210664 512 128 21500 39048 1073846 567096 512 256 32108 43674 1734911 1455126 512 512 41562 58347 480334 2198475 1024 4 5633 9852 481671 190761 1024 8 7743 9497 281640 202165 1024 16 24352 20592 1204487 276973 1024 32 21953 44073 1065535 730336 1024 64 29607 32412 570471 465487 1024 128 17517 59704 1434138 746846 1024 256 46672 35961 728849 477388 1024 512 36600 53999 1684429 1589665 2048 4 4992 7429 237063 343339 2048 8 15668 12169 301837 821782 2048 16 8711 14611 1164925 1002933 2048 32 17112 35510 1254040 1096381 2048 64 23609 51267 764718 731381 2048 128 39559 34802 762140 278263 2048 256 22568 68924 1009416 561110 2048 512 32166 56006 1758140 663222 4096 4 5815 7500 186665 136084 4096 8 11300 11675 473146 289531 4096 16 13887 22617 447511 564258 4096 32 18959 34395 619746 227391 4096 64 22721 42299 1075367 396902 4096 128 33995 45981 436072 432929 4096 256 29349 38661 796403 665375 4096 512 57139 62647 355618 638210 8192 4 6788 7620 195671 374939 8192 8 12112 15019 220445 304106 8192 16 15274 20314 702397 487415 8192 32 21127 40062 610429 334203 8192 64 33946 47456 881633 628656 8192 128 36930 53511 791647 489219 8192 256 26898 55188 1186544 828488 8192 512 43353 67503 609519 891215 16384 4 5591 7883 479078 418878 16384 8 18128 20663 958807 678906 16384 16 20832 26220 442034 552839 16384 32 24114 40678 710993 567194 16384 64 31788 39806 865912 606254 16384 128 41815 41662 1063212 576192 16384 256 35102 50721 1116685 845540 16384 512 49926 57081 482903 1029909 32768 4 8643 5413 547228 368693 32768 8 10090 12804 854912 687047 32768 16 17782 21168 347221 298716 32768 32 27037 33780 1121686 367037 32768 64 46540 60324 865801 689038 32768 128 35820 44174 560769 336928 32768 256