Performance difference between standard swap device (emmc) and zram device:
[root@localhost mmcblk1p3]# bonnie++ -u 0 -s 200 -r 100
Version 1.03e ------Sequential Output------ --Sequential Input- --Random-
-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
localhost.loca 200M 2205 85 9775 35 4254 17 2726 96 13392 30 65.9 2
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 1039 17 17271 76 636 8 7208 93 20981 85 6148 68
localhost.localdomain,200M,2205,85,9775,35,4254,17,2726,96,13392,30,65.9,2,16,1039,17,17271,76,636,8,7208,93,20981,85,6148,68
[root@localhost zram0]# bonnie++ -u 0 -s 200 -r 100
Version 1.03e ------Sequential Output------ --Sequential Input- --Random-
-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
localhost.loca 200M 2658 94 37895 41 21513 52 2809 98 81563 96 13728 96
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 7341 100 +++++ +++ 11752 99 7316 96 +++++ +++ 11324 99
localhost.localdomain,200M,2658,94,37895,41,21513,52,2809,98,81563,96,13728.4,96,16,7341,100,+++++,+++,11752,99,7316,96,+++++,+++,11324,99
For comparison, normal ram speed:
[root@localhost tmpfs]# bonnie++ -u 0 -s 180 -r 90
Version 1.03e ------Sequential Output------ --Sequential Input- --Random-
-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
localhost.loca 180M 2765 96 99161 81 101451 83 2432 88 127094 80 9803 66
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 23339 63 +++++ +++ +++++ +++ 31854 60 +++++ +++ +++++ +++
localhost.localdomain,180M,2765,96,99161,81,101451,83,2432,88,127094,80,9803.0,66,16,23339,63,+++++,+++,+++++,+++,31854,60,+++++,+++,+++++,+++