On 2014-06-25 23:22, Le Tran Dat wrote:
Hi list,
I am compiling Openwrt image. However, the current board is pretty low in RAM. I
would like to check which application accounts for the most ram usage.
Measuring RAM usage is actually a somewhat complicated issue, due to things
like shared memory (as David said) and copy-on-write memory.
There's a pretty good, detailed, description of the issues, and approaches for
dealing with them ("asking Linux the right questions") on elinux.org:
http://elinux.org/Runtime_Memory_Measurement
I've found the approach used by the "mem_usage" script on that page useful in
the past
(scan through /proc/*/maps and total up the `anonymous' ranges).
Depending on how much detail you need/want to get into, it may also be
interesting
to take a look at the patches linked from that page.
--
"'tis an ill wind that blows no minds."
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