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: Wed May 21 13:20:12 2025 Auto Mode Machine = Linux oleg445-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-oleg445-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 7019 15613 376062 330257 64 8 8983 21011 484710 500060 64 16 14304 37252 752329 760859 64 32 9580 42930 1279447 1484662 64 64 16944 98479 1460430 1385075 128 4 10050 23456 340480 330828 128 8 15742 34762 465304 509943 128 16 11672 64189 771581 800337 128 32 13274 57242 1000121 985435 128 64 21469 51489 1349580 1377278 128 128 15726 62139 1032829 1939522 256 4 13175 21456 262028 134372 256 8 19716 26555 211416 619655 256 16 22147 45405 894929 450809 256 32 32491 82711 1108314 1036624 256 64 32503 115470 1325925 1298662 256 128 36612 132974 1368162 1591186 256 256 24750 123620 1805197 485020 512 4 15657 14521 238376 307494 512 8 24228 40780 642419 482493 512 16 39194 55809 618371 660600 512 32 46067 85862 624485 589190 512 64 55750 77895 1096322 1139970 512 128 57041 78456 1267097 1451192 512 256 53831 106375 1718254 1729323 512 512 46440 183438 1895721 1917728 1024 4 16316 19266 192514 214407 1024 8 22930 36196 699984 577218 1024 16 33325 52285 643266 423491 1024 32 44290 63404 554990 1302766 1024 64 64737 93848 852716 1186518 1024 128 59129 108429 892033 1028043 1024 256 87753 174175 1556257 855433 1024 512 77445 134986 1322828 1226150 2048 4 22004 23347 296636 325959 2048 8 34121 43970 582810 580173 2048 16 52814 59731 738296 854736 2048 32 76261 104532 1110555 798780 2048 64 93760 130387 970196 1264191 2048 128 101456 133115 1544450 1128353 2048 256 100772 142828 1511299 1066171 2048 512 100219 166085 1825390 1802788 4096 4 22721 24624 330911 368083 4096 8 39105 41435 605825 561473 4096 16 62206 71198 740549 592924 4096 32 80137 100222 1060302 1140321 4096 64 97148 128003 1048140 1154110 4096 128 115981 140548 1342092 1426211 4096 256 95578 156875 1556739 1498226 4096 512 118597 162442 1578334 1690465 8192 4 22641 23591 299502 311328 8192 8 29481 33585 360260 517272 8192 16 49076 58463 1061278 927944 8192 32 75427 81056 907719 911137 8192 64 84806 120564 1276373 1346922 8192 128 96586 136715 1144302 1482441 8192 256 117347 156288 1228370 897055 8192 512 107323 111691 1359446 1552645 16384 4 23246 24938 344788 358001 16384 8 39489 42849 651111 609248 16384 16 65337 69713 800890 839908 16384 32 84795 101445 1056283 1160511 16384 64 102188 130788 1396288 1247181 16384 128 112811 140035 1529655 1359333 16384 256 136256 154318 1469658 1344493 16384 512 129603 171357 1573435 1529213 32768 4 23080 25292 393108 373054 32768 8 40591 42654 502484 585592 32768 16