CODEWITHSUNDEEP
cmemory-managementmemory-leakslinux-kernelstrace
Piyush Verma
Piyush Verma

Reputation: 21

Memory Allocation without mmap2 system call strace?

Is it possible to allocate memory without the mmap2 call?

I was working on A10 board video player, where I have a huge memory leak. possibly in each frame displayer. There is a library libvecore which handles system call and we don't have the source.

I know that A10 is not common subject so my question is not for A10 but for kernel memory alloc.

I try to trace the program with: strace -e mmap2 ./VideoPlayer.

But I'm surprised with the result. It's not calling mmap2 while video player it calls only on startup.

But at the same time I see memory usage from TOP I can see VideoPlayer is contentiously allocating memory and it almost eats up 300 MB in 3 min.

So should I consider that the memory leak is in the kernel? Or there is any other call to allocate memory dynamically?

Upvotes: 0

Views: 1119

Answers (1)

R.. GitHub STOP HELPING ICE
R.. GitHub STOP HELPING ICE

Reputation: 215221

Yes, the normal way memory is allocated is via the brk system call.

Upvotes: 3

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