内存统计案例

平台：Takoyaki

DDR：64M

LX_MEM ： 63M

开机到主页：cat /proc/meminfo

  1. MemTotal: 36248 kB

  2. CMA预留2M ：

    cma: Reserved 2 MiB at 0x22600000

    2048K cma-reserved

  3. mma预留E00000 = 14M （包含fb1：4900k （ARGB888） fb2：200K）

  4. mmu预留900000 = 9M

  5. kernel reserved：4712K

    Memory: 34200K/40960K available (2177K kernel code, 328K rwdata, 1116K rodata, 156K init, 157K bss, 4712K reserved, 2048K cma-reserved)

  6. 63M - (cma+mma+mmu+kernel_reserved) = 33.4 = MemTotal - cma = 35.4 - 2 =33.4

    1. MMU最大场景：主机呼叫过程中

      此时MMU还有436K余量

    2. MMA最大场景：视频通话过程中

      此时mma还有31b000 = 3.105M （预计这里可以再释放2.5M）

      mma heap name heap_base_cpu_bus_addr length chunk_mgr_avail

mma_heap_name0 22800000 e00000 31b000

      / # cat /proc/mi_modules/mi_sys_mma/mma_heap_name0 child -1 761 exit

      mma heap name heap_base_cpu_bus_addr length chunk_mgr_avail
mma_heap_name0 22800000 e00000 31b000
chunk_mgr info:   offset       length         avail
                            0           e00000      31b000

    each chunk info:

    offset length used_flag task_name
0 20000 1 CMDMEM
20000 4c9000 1 fbdev
4e9000 258000 1 gui
741000 32000 1 fbdev
773000 10b000 1 gui_readbmp1
87e000 14000 1 gui_readbmp1
892000 1000 1 gui_readbmp1
893000 1000 1 gui_readbmp1
894000 8000 1 gui_readbmp1
89c000 2000 1 gui_readbmp1
89e000 2000 1 gui_readbmp1
8a0000 2000 1 gui_readbmp1
8a2000 2000 1 gui_readbmp1
8a4000 2000 1 gui_readbmp1
8a6000 2000 1 gui_readbmp1
8a8000 2000 1 gui_readbmp1
8aa000 2000 1 gui_readbmp1
8ac000 1000 1 gui_readbmp1
8ad000 4000 1 gui_readbmp1
8b1000 4000 1 gui_readbmp1
8b5000 4000 1 gui_readbmp1
8b9000 4000 1 gui_readbmp1
8bd000 5000 1 gui_readbmp1
8c2000 4000 1 gui_readbmp1
8c6000 5000 1 gui_readbmp1
8cb000 4000 1 gui_readbmp1
8cf000 5000 1 gui_readbmp1
8d4000 4000 1 gui_readbmp1
8d8000 5000 1 gui_readbmp1
8dd000 4000 1 gui_readbmp1
8e1000 4000 1 gui_readbmp1
8e5000 4000 1 gui_readbmp1
8e9000 4000 1 gui_readbmp1
8ed000 4000 1 gui_readbmp1
8f1000 4000 1 gui_readbmp1
8f5000 4000 1 gui_readbmp1
8f9000 1000 1 gui_readbmp1
8fa000 1000 1 gui_readbmp1
8fb000 6000 1 gui_readbmp1
901000 6000 1 gui_readbmp1
907000 6000 1 gui_readbmp1
90d000 6000 1 gui_readbmp1
913000 6000 1 gui_readbmp1
919000 6000 1 gui_readbmp1
91f000 6000 1 gui_readbmp1
925000 6000 1 gui_readbmp1
92b000 6000 1 gui_readbmp1
931000 4000 1 gui_readbmp1
935000 8000 1 gui_readbmp1
93d000 6000 1 gui_readbmp1
943000 6000 1 gui_readbmp1
949000 6000 1 gui_readbmp1
94f000 6000 1 gui_readbmp1
955000 4000 1 gui_readbmp1
959000 4000 1 gui_readbmp1
95d000 4000 1 gui_readbmp1
961000 4000 1 gui_readbmp1
965000 4000 1 gui_readbmp1
969000 6000 1 gui_readbmp1
96f000 6000 1 gui_readbmp1
975000 6000 1 gui_readbmp1
97b000 6000 1 gui_readbmp1
981000 6000 1 gui_readbmp1
987000 6000 1 gui_readbmp1
98d000 6000 1 gui_readbmp1
993000 b000 1 gui_readbmp1
99e000 25000 1 gui_readbmp1
9c3000 9000 1 gui_readbmp1
9cc000 9000 1 gui_readbmp1
9d5000 9000 1 gui_readbmp1
9de000 9000 1 gui_readbmp1
9e7000 1000 1 gui_readbmp1
9e8000 1b000 1 gui_readbmp1
a03000 3000 1 gui_readbmp1
a06000 50000 1 gui_readbmp1
a56000 7000 1 gui_readbmp1
a5d000 7000 1 gui_readbmp1
a64000 7000 1 gui_readbmp1
a6b000 1000 1 gui_readbmp1
a6c000 8000 1 gui_readbmp1
a74000 2000 1 gui_readbmp1
a76000 1000 1 gui_readbmp1
a77000 10000 1 gui_readbmp1
a87000 10000 1 gui_readbmp1
a97000 11000 1 gui_readbmp1
aa8000 11000 1 gui_readbmp1
ab9000 7000 1 gui_readbmp1
ac0000 7000 1 gui_readbmp1
ac7000 7000 1 gui_readbmp1
ace000 7000 1 gui_readbmp1
ad5000 7000 1 gui_readbmp1
adc000 7000 1 gui_readbmp1
ae3000 1000 1 gui_readbmp1
ae4000 1000 1 gui_readbmp1
ae5000 31b000 0 NA

...