Iozone: Performance Test of File I/O
Version $Revision: 3.308 $
Compiled for 64 bit mode.
Build: linux
Run began: Sun Aug 22 19:35:33 2010
Include close in write timing
Include fsync in write timing
File size set to 8388608 KB
Record Size 64 KB
Command line used: iozone -c -e -s 8g -r 64k
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
8388608 64 46115 47994 83947 82814 30989 34233 47252 3406533 47624 40921 49934 82359 85779
8388608 64 40061 46175 88932 86837 31582 34402 44545 3422394 37983 43023 47589 86621 85250
8388608 64 46113 51169 81848 86331 27134 31636 38385 3284538 29377 45938 48996 86642 87063
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
8388608 64 43473 46352 57438 61201 13442 29384 20835 3380154 47482 47159 47103 72094 90447
8388608 64 46783 47332 77358 73444 31079 33088 27528 3443182 45859 42297 42109 76346 74095
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
8388608 64 76932 77181 99495 102703 21534 32128 35372 2647323 34882 65459 67277 102148 103247
8388608 64 68858 69152 98342 101037 20798 29836 34225 2628765 33711 65179 68203 98138 102379
8388608 64 61484 68382 100247 101609 20795 30242 34034 2618773 33623 65151 68490 101534 102903
Note: preferred method, for reliability and performance
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
8388608 64 42579 46492 127275 127350 121414 25241 162474 2447693 161820 47290 48201 135685 133456
8388608 64 49093 48535 130889 133104 124248 25597 158476 2465324 163904 48986 47977 131383 130418
8388608 64 47369 47562 130772 132806 121905 25073 155017 2070006 158502 48063 49234 128923 127998
xxx
Note: lvm RAID seems to be slower and less mature than mdadm
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
8388608 64 77797 89480 51364 52639 69422 59349 168993 3394045 91694 77322 86873 70346 68081
8388608 64 82538 85382 58208 54578 71846 60353 166688 3323417 82185 85303 88210 75711 77076
xxx
Note: lvm stripes are SLOW at writes random random bkwd record stride KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 8388608 64 14303 30501 75643 82499 13681 13389 39655 2619943 21012 25252 36915 93384 96516
xxx
Note: preferred method, for reliability and expandability. Poor performance for reads, however.
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
8388608 64 54380 54573 31345 32003 20892 51608 106626 3334149 31571 54076 54733 33780 31499
Note: The file size here was probably way to small, all the reads were just out of the buffer cache. I doubt we really got 5Gbytes/s out of EBS.
Iozone: Performance Test of File I/O
Version $Revision: 3.308 $
Compiled for 64 bit mode.
Build: linux
Run began: Sun Aug 22 20:48:46 2010
Include close in write timing
Include fsync in write timing
File size set to 8388608 KB
Record Size 64 KB
Command line used: iozone -c -e -s 8g -r 64k
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
8388608 64 55821 57627 5089526 5102975 4570300 57741 4855740 6772790 4714128 56966 57433 5076458 5077382
8388608 64 58630 59119 5060545 5091654 4598299 55922 4822469 6830658 4746746 54273 58441 5083893 5091469