Memory size is too large in TizenRT

Question

Memory size is too large in TizenRT

hs0225 opened this issue 7 years ago · comments

Look at the memory size of test_buffer.js,

Board	Memory Size
STM32	32840 Byte
RP2	33159 Byte
Artik053	4253768376 Byte

The memory size is abnormally large only in Artik053. We should measure it correctly.

yichoi · Answer 1 · Mon Oct 23 2017 14:43:02 GMT+0800 (China Standard Time)

I would like to have proper measurement tool for memory usage dynamically

Roland Takacs · Answer 2 · Mon Oct 23 2017 17:10:33 GMT+0800 (China Standard Time)

@hs0225: Could you please print the value of the stdout variable here?

HoSung Kim · Answer 3 · Mon Oct 23 2017 18:09:51 GMT+0800 (China Standard Time)

@rtakacs You can see the result here.

Zoltan Herczeg · Answer 4 · Tue Oct 24 2017 16:01:42 GMT+0800 (China Standard Time)

It seems only the allocated and peak allocated values are wrong. The rest of the allocations are 0 (I suppose this is printed at the end after everything is freed), and peak values are reasonable.

As far as I remember we use a hack to inject external allocation data into JerryScript memstats. Perhaps the injected data is wrong, and that is what @LaszloLango is talking about. Furthermore it seems to me that the injected numbers are kind of random, because there are big, but not too big numbers (e.g. 2813060968) are there.

Zoltan Herczeg · Answer 5 · Tue Oct 24 2017 16:09:23 GMT+0800 (China Standard Time)

@hs0225 does Tizen uses the allocator of nuttix or something else? Is it configured to use 4 or 2 byte sizes?

Roland Takacs · Answer 6 · Wed Oct 25 2017 04:03:23 GMT+0800 (China Standard Time)

@zherczeg As I checked, TizenRT uses the same allocator than NuttX, but it extends the allocnode structure with other debug heap information. That is why the size is 16 bytes. #46 is a fix for this issue.