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: Mon Apr 7 06:02:52 2025 Auto Mode Machine = Linux oleg311-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-oleg311-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 19900 19435 533875 443837 64 8 33124 50195 542506 537079 64 16 33247 74839 789967 789967 64 32 40710 98624 1045286 1562436 64 64 48968 175815 1947927 2052169 128 4 21599 30246 287587 505620 128 8 39421 68193 576161 921183 128 16 57163 82840 1220700 1319723 128 32 70960 139890 1579934 1319723 128 64 65738 149512 1162547 1997245 128 128 88829 171534 1455701 2238774 256 4 26556 39831 469743 492360 256 8 47443 55701 773697 605332 256 16 65592 90973 895676 821025 256 32 89079 104839 1347557 1471270 256 64 85110 154945 1019886 1790149 256 128 123265 248332 1224606 2097948 256 256 121562 188250 2192179 1826695 512 4 34397 36480 514514 540002 512 8 42460 51390 618371 840895 512 16 57393 120409 803757 1190529 512 32 94011 112158 1182010 1122687 512 64 98500 163160 1556366 1524329 512 128 158804 189911 1700565 1289156 512 256 147768 262022 1585086 1975959 512 512 159547 303840 1815584 1527582 1024 4 31191 30105 406189 308905 1024 8 45502 51926 829816 875843 1024 16 79385 93118 1108148 844999 1024 32 99099 132934 1302766 1108148 1024 64 115615 168095 1161176 1360111 1024 128 144224 190364 1563622 1230718 1024 256 146327 209881 1594978 1771993 1024 512 184739 243178 1954207 2220992 2048 4 33119 33266 486825 336401 2048 8 53110 57853 722948 495045 2048 16 78434 74692 634467 1082427 2048 32 120477 131306 740971 1290592 2048 64 138545 154718 726249 1571864 2048 128 147262 193007 1503627 1550304 2048 256 185656 192557 1665101 1640927 2048 512 174966 262899 2006147 1821906 4096 4 31636 32302 412612 424594 4096 8 53785 51778 573813 572398 4096 16 85436 83602 892377 952331 4096 32 116589 132265 862841 1266970 4096 64 169522 159513 1044381 1022988 4096 128 181559 180839 1175350 1908703 4096 256 203416 199764 1277142 1935802 4096 512 188504 211867 1649562 1410984 8192 4 28040 29740 415098 471211 8192 8 53675 56585 697435 546643 8192 16 73326 88089 823563 943772 8192 32 124168 116861 1244205 1049992 8192 64 133201 147163 1257593 1320218 8192 128 175563 185612 1269301 1552996 8192 256 204504 281919 1720584 1565092 8192 512 172681 215936 1311950 1331834 16384 4 28719 31149 385359 407024 16384 8 48761 54135 579472 665365 16384 16 83093 80880 962905 995576 16384 32 113504 120704 1089215 1018899 16384 64 150331 146861 1313776 1324054 16384 128 178698 185052 1440605 1463897 16384 256 187760 235192 1474578 1387072 16384 512 200991 187151 1351580 1618955 32768 4 27873 29980 417458 401283 32768 8 47005 56568 736192 681670 32768 16 79879 87196 1079562 1034442 32768 32