Comment #10 on issue 16251 by joel.stan: Need to implement several more
functions in process util linux.
http://code.google.com/p/chromium/issues/detail?id=16251
GetWorkingSetKBytes() is parsing smaps already (that code landed yesterday).
I didn't notice until now that smaps also has the show_map_vma() status
bits as maps
(see fs/proc/task_mmu.c in the kernel).
So parsing smaps would give us the same as parsing maps, if we do the
following:
if flags[3] == 'p':
flags[1] == 'w':
private_bytes += vale of Size*1024
Taking a look at a real chrome processes smaps file, I'm left confused with
how Size
relates to Shared_{Clean,Dirty} and Private_{Clean,Dirty}. None of the
numbers
listed add up to 192kB.
09aec000-09b1c000 rwxp 00000000 00:00 0
Size: 192 kB
Rss: 124 kB
Pss: 101 kB
Shared_Clean: 0 kB
Shared_Dirty: 24 kB
Private_Clean: 0 kB
Private_Dirty: 100 kB
Referenced: 104 kB
Swap: 0 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
This makes me wonder if it's valid to use the Shared/Private numbers in one
spot, and
the total VM size in another.
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