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Yiling Cao edited this page Nov 8, 2013
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Welcome to the aria-psp-kernel wiki!
emmc performance tunning
24MHz max clock(bonnie++ results):
ubuntu@arm:~$ bonnie++ -d /a
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 1.97 ------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
arm 496M 157 95 6385 2 4917 3 715 98 26111 12 945.0 43
Latency 56885us 1395ms 813ms 50141us 3783us 394ms
Version 1.97 ------Sequential Create------ --------Random Create--------
arm -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 5129 33 +++++ +++ 6700 27 5252 33 +++++ +++ 6569 28
Latency 10985us 2075us 4088us 2349us 122us 3417us
1.97,1.97,arm,1,1423880389,496M,,157,95,6385,2,4917,3,715,98,26111,12,945.0,43,16,,,,,5129,33,+++++,+++,6700,27,5252,33,+++++,+++,6569,28,56885us,1395ms,813ms,50141us,3783us,394ms,10985us,2075us,4088us,2349us,122us,3417us
ubuntu@arm:~$ bonnie++ -d /a
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 1.97 ------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
arm 496M 160 96 6722 2 2926 2 680 98 48063 23 1254 58
Latency 223ms 559ms 987ms 22948us 2379us 158ms
Version 1.97 ------Sequential Create------ --------Random Create--------
arm -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 5026 35 +++++ +++ 6293 27 5348 36 +++++ +++ 4925 22
Latency 3722us 2135us 9521us 2807us 213us 2869us
1.97,1.97,arm,1,1423882736,496M,,160,96,6722,2,2926,2,680,98,48063,23,1254,58,16,,,,,5026,35,+++++,+++,6293,27,5348,36,+++++,+++,4925,22,223ms,559ms,987ms,22948us,2379us,158ms,3722us,2135us,9521us,2807us,213us,2869us