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REVISION SUMMARY
This adds a "proportional state set" value to ProcessCore::Process, that is
then
exposed as "Total Memory" column in KSysGuard. This column is hidden by
default.
PSS is the amount of memory a process uses privately + the amount of shared
memory
divided by the amount of processes sharing that memory. It is, as far as I
know, the
closest we can get to "total physical memory usage" for a process.
The value for PSS is read from /proc/{pid}/smaps_rollup . This unfortunately
means
we cannot currently display PSS for processes not owned by the current user,
as
smaps_rollup is not world-readable.
For some background on this, see https://lkml.org/lkml/2017/8/9/1073 , which
is the
patch that adds smaps_rollup and talks about what Android uses it for.
TEST PLAN
Run ksysguard, then toggle display of the "Total Memory" column. Values
should be
higher than the "Memory" column.
REPOSITORY
R111 KSysguard Library
BRANCH
pss
REVISION DETAIL
https://phabricator.kde.org/D23382
AFFECTED FILES
processcore/process.cpp
processcore/process.h
processcore/processes_linux_p.cpp
processui/ProcessModel.cpp
processui/ProcessModel.h
processui/ksysguardprocesslist.cpp
To: ahiemstra, #plasma
Cc: plasma-devel, LeGast00n, The-Feren-OS-Dev, jraleigh, fbampaloukas, GB_2,
ragreen, Pitel, ZrenBot, himcesjf, lesliezhai, ali-mohamed, jensreuterberg,
abetts, sebas, apol, mart
