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 15:07:18 2025 Auto Mode Machine = Linux oleg252-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-oleg252-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 10209 26100 278227 233461 64 8 14291 36384 901377 163699 64 16 8363 35284 524487 1066042 64 32 17669 82145 1163036 955947 64 64 10856 110339 1452528 1780008 128 4 18993 24261 360605 64770 128 8 28907 52609 586868 670413 128 16 39762 57115 955616 1048974 128 32 19783 113676 985435 1030846 128 64 43419 127105 1294270 1306873 128 128 57011 146294 1663139 2464907 256 4 12998 17772 382140 363142 256 8 19922 40231 697322 272329 256 16 29698 81810 288267 930608 256 32 28792 115570 1023775 1153561 256 64 65793 133536 1430119 1354356 256 128 24091 246169 2210228 1543163 256 256 46595 204959 2081678 2114473 512 4 14045 25503 387576 332901 512 8 30864 31489 390536 460457 512 16 56833 43678 730236 724081 512 32 67340 43054 504956 1120344 512 64 80364 129453 1354190 471372 512 128 65955 87478 888930 1169140 512 256 57579 157975 1778004 1889050 512 512 103729 219359 2381315 2014892 1024 4 20739 18772 359297 279314 1024 8 23689 37641 621755 461437 1024 16 39161 58311 937805 404125 1024 32 51094 51866 888894 1073257 1024 64 72924 118518 1321200 1232130 1024 128 83530 114334 1448162 805688 1024 256 127869 148945 1560781 1595571 1024 512 105413 128465 1321200 1471481 2048 4 21378 19965 212981 204270 2048 8 30484 44513 601628 440423 2048 16 59802 54385 948974 851601 2048 32 85177 82743 891182 986463 2048 64 105615 117023 1001881 921191 2048 128 74283 120862 1381950 1351935 2048 256 114070 162347 1565847 880043 2048 512 153466 172537 1926942 1568134 4096 4 22609 23612 282504 298609 4096 8 31121 35719 591576 593785 4096 16 49293 50904 409807 621450 4096 32 49926 63759 417029 717837 4096 64 95317 81632 1190004 1096647 4096 128 97174 111851 811258 1325115 4096 256 88207 123254 795813 1348624 4096 512 113380 169031 1355327 1460773 8192 4 22269 25380 364784 369440 8192 8 33809 35260 454633 504994 8192 16 60032 75496 762113 683180 8192 32 76177 94781 836414 860158 8192 64 121605 122431 1182950 848287 8192 128 133010 127145 963542 1149931 8192 256 149877 188382 1353608 1055540 8192 512 129254 163034 1064005 1269301 16384 4 22842 22181 281261 377843 16384 8 32999 41694 407715 505554 16384 16 50215 54647 796158 660295 16384 32 66310 73304 776896 1045166 16384 64 89303 118220 1134699 1138025 16384 128