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 May 16 08:53:30 2025 Auto Mode Machine = Linux oleg450-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-oleg450-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 10223 25315 653436 695778 64 8 19400 45911 821391 852702 64 16 24862 35400 1392258 1255511 64 32 20413 92634 1013707 1183548 64 64 18668 98298 1828508 1679761 128 4 15560 31434 540217 533241 128 8 28188 42823 883293 715059 128 16 28532 75426 976473 1085013 128 32 33506 100541 1123617 1229084 128 64 33263 147095 1598754 1455701 128 128 38209 236111 1939522 2140585 256 4 18189 18681 812944 713067 256 8 31307 47206 817898 810490 256 16 30673 38162 1175022 1152323 256 32 49650 124754 1206714 1132871 256 64 65540 142145 965763 1497953 256 128 52053 178013 1642294 1588832 256 256 81505 211749 2081678 1952947 512 4 25775 29251 625212 721163 512 8 34653 36681 890404 789862 512 16 53850 76475 1182661 1248678 512 32 76374 107203 1230786 1127995 512 64 54671 155628 428057 1869318 512 128 94151 143983 1668848 1476130 512 256 55315 84854 1340664 1895721 512 512 96330 240835 1604029 2097550 1024 4 22164 29645 571458 1130312 1024 8 32037 32489 888159 768219 1024 16 58470 64052 395528 1099918 1024 32 77434 94501 1236742 1324868 1024 64 103936 119235 1331853 576907 1024 128 93533 113163 1568189 1464956 1024 256 64524 146347 1393200 1720874 1024 512 124876 212624 1756772 1753186 2048 4 25224 26785 683813 742059 2048 8 38818 31514 959682 935538 2048 16 59281 88845 1170959 1242611 2048 32 54965 103157 877078 1287111 2048 64 103325 131848 1085436 1188621 2048 128 72470 141066 1564421 1639674 2048 256 126083 153146 1721151 1195569 2048 512 116981 172958 1675821 924562 4096 4 25750 28723 626503 435288 4096 8 41634 41468 392039 835767 4096 16 66968 67183 957693 1142825 4096 32 84868 108489 1288444 1102205 4096 64 122579 112022 969912 1141230 4096 128 140499 148212 1263801 1372215 4096 256 114965 146614 1367192 940960 4096 512 116030 144434 745530 1673178 8192 4 23231 25630 579228 433874 8192 8 36181 47282 530228 962948 8192 16 61888 59538 1131639 926717 8192 32 90818 69912 899921 811906 8192 64 102604 83563 1156901 681527 8192 128 76383 125118 1355638 889185 8192 256 92571 143171 1523861 1497103 8192 512 103860 134390 1395840 1549704 16384 4 20935 22443 551649 454089 16384 8 35565 33790 954731 1077246 16384 16 45758 63085 1141504 758059 16384 32 68925 86080 1260496 846499 16384 64 91116 97683 1479244 793877 16384 128 92435 127197 1303213 1414860 16384 256 92345 123094 1333561 1274215 16384 512 95268 137206 1141352 1400100 32768 4 21371 24492 583174 579073 32768 8 42891 49155 1030765 901405 32768 16 66918 77304 959475 1213848 32768 32 85903 85479 1071232 877560 32768 64 105807 124946 1025183 984380 32768 128 127401 160223 1072285 1019926 32768 256 105136 170528 1069798 1134819 32768 512 135225 154571 1306804 1256162 65536 4