やっぱ ext4 が遅いよね
以下の bonnie++ の結果が何を意味しているのか説明するつもりはない。そもそも実験環境や設定が適当だし、わずか 1 回のみの試行である。
俺はこの結果から何も得るものはないと思う。そんなことより聞いてくれ、もう逃げ出したい。
Momonga Linux 7 上の ext4 で bonnie++ を実行した例。
$ bonnie++
Writing a byte at a time...done
Writing intelligently...done
Rewriting...done
Reading a byte at a time...done
Reading intelligently...done
start 'em...done...done...done...done...done...
Create files in sequential order...done.
Stat files in sequential order...done.
Delete files in sequential order...done.
Create files in random order...done.
Stat files in random order...done.
Delete files in random order...done.
Version 1.96 ------Sequential Output------ --Sequential Input- --Random-
Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
amane 24G 330 98 94348 9 41239 6 1987 57 103831 5 123.9 1
Latency 31250us 6682ms 10366ms 156ms 344ms 2532ms
Version 1.96 ------Sequential Create------ --------Random Create--------
amane -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 1045 1 +++++ +++ 5837 5 7698 10 +++++ +++ 8253 8
Latency 6000us 475us 571us 82us 41us 310us
1.96,1.96,amane,1,1284661684,24G,,330,98,94348,9,41239,6,1987,57,103831,5,123.9,1,16,,,,,1045,1,+++++,+++,5837,5,7698,10,+++++,+++,8253,8,31250us,6682ms,10366ms,156ms,344ms,2532ms,6000us,475us,571us,82us,41us,310us同様に Momonga Linux 7 上の btrfs で bonnie++ を実行した例。ただし、この btrfs は compress オプションが有効になっている。本当に実験に価値がないよね。
$ bonnie++
Writing a byte at a time...done
Writing intelligently...done
Rewriting...done
Reading a byte at a time...done
Reading intelligently...done
start 'em...done...done...done...done...done...
Create files in sequential order...done.
Stat files in sequential order...done.
Delete files in sequential order...done.
Create files in random order...done.
Stat files in random order...done.
Delete files in random order...done.
Version 1.96 ------Sequential Output------ --Sequential Input- --Random-
Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
amane 24G 255 99 457484 43 189642 31 2719 81 274475 17 179.4 26
Latency 35326us 232ms 1526ms 3438us 139ms 1078ms
Version 1.96 ------Sequential Create------ --------Random Create--------
amane -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 3128 9 +++++ +++ 4702 22 7402 18 +++++ +++ 9594 41
Latency 63499us 608us 146ms 25281us 48us 1725us
1.96,1.96,amane,1,1284665091,24G,,255,99,457484,43,189642,31,2719,81,274475,17,179.4,26,16,,,,,3128,9,+++++,+++,4702,22,7402,18,+++++,+++,9594,41,35326us,232ms,1526ms,3438us,139ms,1078ms,63499us,608us,146ms,25281us,48us,1725us
