On Nov 26, 2013, at 11:40 AM, Eduardo Silva <[email protected]> wrote:
> i am interested into gather memory usage per Linux thread, as i am using
> jemalloc i think this can be done quering the arenas per thread. if i am
> correct, do you have some code example that accomplish something similar to
> this ?
Threads don't own memory; allocated regions can be shared among threads, and
allocation/deallocation can be split between threads. That said, jemalloc does
track total volume of allocation and deallocation on a per thread basis, so you
can derive the information you want as long as you account for allocated
regions that are shared among threads. Take a look at the "thread.allocated"
and "thread.deallocated" mallctl() interfaces in the man page:
http://www.canonware.com/download/jemalloc/jemalloc-latest/doc/jemalloc.html
There is a relevant test program included with jemalloc:
https://github.com/jemalloc/jemalloc/blob/dev/test/allocated.c
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